 Answer questions about density to get the school's security system code and unlock the doors in time for your birthday party!

## Transcript

Density

LOCKED IN

SCHOOL

START

Visit www.VirtualScienceTeachers.com for more interactives!

This interactive has an updated version.

© Virtual Science Teachers 2022

Report a Problem

Density

LOCKED IN

SCHOOL

START

Visit www.VirtualScienceTeachers.com for more interactives!

This interactive has an updated version.

© Virtual Science Teachers 2022

Report a Problem

Visit www.VirtualScienceTeachers.com for more interactives!

Would you prefer the music and sound effects?

No Thank You

But, you were so focused on finishing your chemistry lab that you lost track of time and ended up getting

LOCKED IN SCHOOL
after everyone else has left!
And now your only hope to make it to your own birthday party is to get the 4 digit security system code to unlock the doors.
Answer the questions hidden all over the school to get the code!

Code Locations

The code is hidden throughout the school. Write down each digit of the code.

Once you have all 4 numbers of the security code, enter them into the security system to unlock the doors!

1. Science Lab

2. Cafeteria

3. Lockers + Gym

Security Room

4. Auditorium

The number of protons in an atom

Question 1: What is mass?

A measure of the amount of matter
in an object or substance

The pull of gravity on an object

The amount of space an object or substance takes up

To get the first digit of the code,
you must get all 6 questions in the science lab correct.

If you do not get all 6 questions correct, you get to try again.

Help

Mass is a measurement that tells us how much matter is in an object or substance. Some units of mass include grams (g), kilograms (kg), and metric tons (t).

Example: The pencil has a mass of 6 grams.

Volume refers to how much space an object or substance takes up. Some units of volume include milliliters (ml), liters (L), and cubic centimeters (cm³).

Example: The eraser has a volume of 4 cubic centimeters.

Note: 1 milliliter (ml) is the same volume as 1 cubic centimeter (cm3).

Density refers to the amount of matter in a given amount of space. To find the density of a substance, divide its mass by its volume. Some units of density include grams per cubic centimeter (g/cm3), grams per milliliter (g/ml), kilograms per cubic meter (kg/m3), and kilograms per liter (kg/L).

Example: The rock is much more dense than the marshmallow. The density of the rock is 2.8 grams per cubic centimeter (g/cm3). The density of the marshmallow is 0.5 grams per cubic centimeter (g/cm3).

The number of protons in an atom

Question 1: What is mass?

A measure of the amount of matter
in an object or substance

The pull of gravity on an object

The amount of space an object or substance takes up

You did not get all 6 questions correct. That's okay! Try again!

Help

Mass is a measurement that tells us how much matter is in an object or substance. Some units of mass include grams (g), kilograms (kg), and metric tons (t).

Example: The pencil has a mass of 6 grams.

Volume refers to how much space an object or substance takes up. Some units of volume include milliliters (ml), liters (L), and cubic centimeters (cm³).

Example: The eraser has a volume of 4 cubic centimeters.

Note: 1 milliliter (ml) is the same volume as 1 cubic centimeter (cm3).

Density refers to the amount of matter in a given amount of space. To find the density of a substance, divide its mass by its volume. Some units of density include grams per cubic centimeter (g/cm3), grams per milliliter (g/ml), kilograms per cubic meter (kg/m3), and kilograms per liter (kg/L).

Example: The rock is much more dense than the marshmallow. The density of the rock is 2.8 grams per cubic centimeter (g/cm3). The density of the marshmallow is 0.5 grams per cubic centimeter (g/cm3).

grams (g)

Question 2: Which of these is NOT a unit of mass?

kilograms (kg)

liters (L)

metric ton (t)

Help

Mass is a measurement that tells us how much matter is in an object or substance. Some units of mass include grams (g), kilograms (kg), and metric tons (t).

Example: The pencil has a mass of 6 grams.

Volume refers to how much space an object or substance takes up. Some units of volume include milliliters (ml), liters (L), and cubic centimeters (cm³).

Example: The eraser has a volume of 4 cubic centimeters.

Note: 1 milliliter (ml) is the same volume as 1 cubic centimeter (cm3).

Density refers to the amount of matter in a given amount of space. To find the density of a substance, divide its mass by its volume. Some units of density include grams per cubic centimeter (g/cm3), grams per milliliter (g/ml), kilograms per cubic meter (kg/m3), and kilograms per liter (kg/L).

Example: The rock is much more dense than the marshmallow. The density of the rock is 2.8 grams per cubic centimeter (g/cm3). The density of the marshmallow is 0.5 grams per cubic centimeter (g/cm3).

grams (g)

Question 2: Which of these is NOT a unit of mass?

kilograms (kg)

liters (L)

metric ton (t)

Help

Mass is a measurement that tells us how much matter is in an object or substance. Some units of mass include grams (g), kilograms (kg), and metric tons (t).

Example: The pencil has a mass of 6 grams.

Volume refers to how much space an object or substance takes up. Some units of volume include milliliters (ml), liters (L), and cubic centimeters (cm³).

Example: The eraser has a volume of 4 cubic centimeters.

Note: 1 milliliter (ml) is the same volume as 1 cubic centimeter (cm3).

Density refers to the amount of matter in a given amount of space. To find the density of a substance, divide its mass by its volume. Some units of density include grams per cubic centimeter (g/cm3), grams per milliliter (g/ml), kilograms per cubic meter (kg/m3), and kilograms per liter (kg/L).

Example: The rock is much more dense than the marshmallow. The density of the rock is 2.8 grams per cubic centimeter (g/cm3). The density of the marshmallow is 0.5 grams per cubic centimeter (g/cm3).

The amount of space an object or substance takes up

The length of an object

The number of particles in an object or substance

The amount of matter in an object or substance

Question 3: What is volume?

Help

Mass is a measurement that tells us how much matter is in an object or substance. Some units of mass include grams (g), kilograms (kg), and metric tons (t).

Example: The pencil has a mass of 6 grams.

Volume refers to how much space an object or substance takes up. Some units of volume include milliliters (ml), liters (L), and cubic centimeters (cm³).

Example: The eraser has a volume of 4 cubic centimeters.

Note: 1 milliliter (ml) is the same volume as 1 cubic centimeter (cm3).

Density refers to the amount of matter in a given amount of space. To find the density of a substance, divide its mass by its volume. Some units of density include grams per cubic centimeter (g/cm3), grams per milliliter (g/ml), kilograms per cubic meter (kg/m3), and kilograms per liter (kg/L).

Example: The rock is much more dense than the marshmallow. The density of the rock is 2.8 grams per cubic centimeter (g/cm3). The density of the marshmallow is 0.5 grams per cubic centimeter (g/cm3).

The amount of space an object or substance takes up

The length of an object

The number of particles in an object or substance

The amount of matter in an object or substance

Question 3: What is volume?

Help

Mass is a measurement that tells us how much matter is in an object or substance. Some units of mass include grams (g), kilograms (kg), and metric tons (t).

Example: The pencil has a mass of 6 grams.

Volume refers to how much space an object or substance takes up. Some units of volume include milliliters (ml), liters (L), and cubic centimeters (cm³).

Example: The eraser has a volume of 4 cubic centimeters.

Note: 1 milliliter (ml) is the same volume as 1 cubic centimeter (cm3).

Density refers to the amount of matter in a given amount of space. To find the density of a substance, divide its mass by its volume. Some units of density include grams per cubic centimeter (g/cm3), grams per milliliter (g/ml), kilograms per cubic meter (kg/m3), and kilograms per liter (kg/L).

Example: The rock is much more dense than the marshmallow. The density of the rock is 2.8 grams per cubic centimeter (g/cm3). The density of the marshmallow is 0.5 grams per cubic centimeter (g/cm3).

Liters
L

cubic

centimeters

kilograms
kg

milliliters
ml

Question 4: Which of this is NOT a unit of volume?

cm

3

Help

Mass is a measurement that tells us how much matter is in an object or substance. Some units of mass include grams (g), kilograms (kg), and metric tons (t).

Example: The pencil has a mass of 6 grams.

Volume refers to how much space an object or substance takes up. Some units of volume include milliliters (ml), liters (L), and cubic centimeters (cm³).

Example: The eraser has a volume of 4 cubic centimeters.

Note: 1 milliliter (ml) is the same volume as 1 cubic centimeter (cm3).

Density refers to the amount of matter in a given amount of space. To find the density of a substance, divide its mass by its volume. Some units of density include grams per cubic centimeter (g/cm3), grams per milliliter (g/ml), kilograms per cubic meter (kg/m3), and kilograms per liter (kg/L).

Example: The rock is much more dense than the marshmallow. The density of the rock is 2.8 grams per cubic centimeter (g/cm3). The density of the marshmallow is 0.5 grams per cubic centimeter (g/cm3).

Liters
L

cubic

centimeters

kilograms
kg

milliliters
ml

Question 4: Which of these is NOT a unit of volume?

cm

3

Help

Mass is a measurement that tells us how much matter is in an object or substance. Some units of mass include grams (g), kilograms (kg), and metric tons (t).

Example: The pencil has a mass of 6 grams.

Volume refers to how much space an object or substance takes up. Some units of volume include milliliters (ml), liters (L), and cubic centimeters (cm³).

Example: The eraser has a volume of 4 cubic centimeters.

Note: 1 milliliter (ml) is the same volume as 1 cubic centimeter (cm3).

Density refers to the amount of matter in a given amount of space. To find the density of a substance, divide its mass by its volume. Some units of density include grams per cubic centimeter (g/cm3), grams per milliliter (g/ml), kilograms per cubic meter (kg/m3), and kilograms per liter (kg/L).

Example: The rock is much more dense than the marshmallow. The density of the rock is 2.8 grams per cubic centimeter (g/cm3). The density of the marshmallow is 0.5 grams per cubic centimeter (g/cm3).

Liters
L

cubic

centimeters

kilograms
kg

milliliters
ml

Question 4: Which of these is NOT a unit of volume?

cm

3

Help

Mass is a measurement that tells us how much matter is in an object or substance. Some units of mass include grams (g), kilograms (kg), and metric tons (t).

Example: The pencil has a mass of 6 grams.

Volume refers to how much space an object or substance takes up. Some units of volume include milliliters (ml), liters (L), and cubic centimeters (cm³).

Example: The eraser has a volume of 4 cubic centimeters.

Note: 1 milliliter (ml) is the same volume as 1 cubic centimeter (cm3).

Density refers to the amount of matter in a given amount of space. To find the density of a substance, divide its mass by its volume. Some units of density include grams per cubic centimeter (g/cm3), grams per milliliter (g/ml), kilograms per cubic meter (kg/m3), and kilograms per liter (kg/L).

Example: The rock is much more dense than the marshmallow. The density of the rock is 2.8 grams per cubic centimeter (g/cm3). The density of the marshmallow is 0.5 grams per cubic centimeter (g/cm3).

A measure of how much matter is in a certain volume

The amount of matter in an object or substance

The amount of space an object or substance takes up

The number of particles in an object or substance

Question 5: What is density?

Help

Mass is a measurement that tells us how much matter is in an object or substance. Some units of mass include grams (g), kilograms (kg), and metric tons (t).

Example: The pencil has a mass of 6 grams.

Volume refers to how much space an object or substance takes up. Some units of volume include milliliters (ml), liters (L), and cubic centimeters (cm³).

Example: The eraser has a volume of 4 cubic centimeters.

Note: 1 milliliter (ml) is the same volume as 1 cubic centimeter (cm3).

Density refers to the amount of matter in a given amount of space. To find the density of a substance, divide its mass by its volume. Some units of density include grams per cubic centimeter (g/cm3), grams per milliliter (g/ml), kilograms per cubic meter (kg/m3), and kilograms per liter (kg/L).

Example: The rock is much more dense than the marshmallow. The density of the rock is 2.8 grams per cubic centimeter (g/cm3). The density of the marshmallow is 0.5 grams per cubic centimeter (g/cm3).

A measure of how much matter is in a certain volume

The amount of matter in an object or substance

The amount of space an object or substance takes up

The number of particles in an object or substance

Question 5: What is density?

Help

Mass is a measurement that tells us how much matter is in an object or substance. Some units of mass include grams (g), kilograms (kg), and metric tons (t).

Example: The pencil has a mass of 6 grams.

Volume refers to how much space an object or substance takes up. Some units of volume include milliliters (ml), liters (L), and cubic centimeters (cm³).

Example: The eraser has a volume of 4 cubic centimeters.

Note: 1 milliliter (ml) is the same volume as 1 cubic centimeter (cm3).

Density refers to the amount of matter in a given amount of space. To find the density of a substance, divide its mass by its volume. Some units of density include grams per cubic centimeter (g/cm3), grams per milliliter (g/ml), kilograms per cubic meter (kg/m3), and kilograms per liter (kg/L).

Example: The rock is much more dense than the marshmallow. The density of the rock is 2.8 grams per cubic centimeter (g/cm3). The density of the marshmallow is 0.5 grams per cubic centimeter (g/cm3).

grams per milliter

g/ml

kilograms

per
liter
kg/L

grams

per
cubic centimeter
g/cm

grams

per
kilogram
g/kg

Question 6: Which of these is NOT a unit of density?

3

Help

Mass is a measurement that tells us how much matter is in an object or substance. Some units of mass include grams (g), kilograms (kg), and metric tons (t).

Example: The pencil has a mass of 6 grams.

Volume refers to how much space an object or substance takes up. Some units of volume include milliliters (ml), liters (L), and cubic centimeters (cm³).

Example: The eraser has a volume of 4 cubic centimeters.

Note: 1 milliliter (ml) is the same volume as 1 cubic centimeter (cm3).

Density refers to the amount of matter in a given amount of space. To find the density of a substance, divide its mass by its volume. Some units of density include grams per cubic centimeter (g/cm3), grams per milliliter (g/ml), kilograms per cubic meter (kg/m3), and kilograms per liter (kg/L).

Example: The rock is much more dense than the marshmallow. The density of the rock is 2.8 grams per cubic centimeter (g/cm3). The density of the marshmallow is 0.5 grams per cubic centimeter (g/cm3).

grams per milliter

g/ml

kilograms

per
liter
kg/L

grams

per
cubic centimeter
g/cm

grams

per
kilogram
g/kg

Question 6: Which of these is NOT a unit of density?

3

Help

Mass is a measurement that tells us how much matter is in an object or substance. Some units of mass include grams (g), kilograms (kg), and metric tons (t).

Example: The pencil has a mass of 6 grams.

Volume refers to how much space an object or substance takes up. Some units of volume include milliliters (ml), liters (L), and cubic centimeters (cm³).

Example: The eraser has a volume of 4 cubic centimeters.

Note: 1 milliliter (ml) is the same volume as 1 cubic centimeter (cm3).

Density refers to the amount of matter in a given amount of space. To find the density of a substance, divide its mass by its volume. Some units of density include grams per cubic centimeter (g/cm3), grams per milliliter (g/ml), kilograms per cubic meter (kg/m3), and kilograms per liter (kg/L).

Example: The rock is much more dense than the marshmallow. The density of the rock is 2.8 grams per cubic centimeter (g/cm3). The density of the marshmallow is 0.5 grams per cubic centimeter (g/cm3).

Nice work! You got all 6 questions correct!
The first number in the security code is 7.
You will need this number, so be sure to write it down!

Click here to continue on to the cafeteria.

Do you think grapes will sink or float when

put into water?

Float

Sink

Grapes sink in water!

So, does this mean that grapes are MORE or LESS dense than water?

Grapes are

MORE
dense than water.

Grapes are

LESS
dense than water.

Grapes are

THE SAME
density as water.

Try again!

Remember:

Objects or substances sink in substances they are MORE dense than.

Objects or substances float in substances they are LESS dense than.

Try again!

Remember:

Objects or substances sink in substances they are MORE dense than.

Objects or substances float in substances they are LESS dense than.

Use water displacement to determine the volume of ONE grape.

What is the volume of the grape in the graduated cylinder?

60 ml

66 ml

Remember:
The amount of water displaced (the amount the water level rises) is equal to the volume of the grape!

Click here to enter the volume of the grape.

Try again!

What is the volume of the grape in the graduated cylinder?

60 ml

66 ml

6 ml

60 ml

66 ml

22 ml

Remember:
The amount of water displaced (the amount the water level rises) is equal to the volume of the grape!

Try again!

Volume of grape = (volume of water + grape) - (volume of water without grape)

Try again!

Volume of grape = (volume of water + grape) - (volume of water without grape)

Try again!

Volume of grape = (volume of water + grape) - (volume of water without grape)

That's right!

What is the density of the grape?

The volume of the grape is 6 ml.

The mass of the grape is 7.2 grams.

Density =

Mass

Click here to enter the density of the grape.

Volume

Remember:

Click here if you'd like a clue.

The density of the grape can be found by dividing the mass of the grape by its volume.

The mass of the grape is provided on the page and you have already concluded that the volume of the grape is 6 ml.

Divide the mass by 6 ml and you will have the value for the density in the units of grams/milliliter! This is the number you will enter.

You can do this!

See the Pen React Calculator by Suzanne (@virtualscienceteachers) on CodePen.

Try again!

What is the density of the grape?

The volume of the grape is 6 ml.

The mass of the grape is 7.2 grams.

Density =

Mass

Click here to enter the density of the grape.

Volume

Remember:

See the Pen React Calculator by Suzanne (@virtualscienceteachers) on CodePen.

The second number in the code is 9.

Way to go!

Your time in the cafeteria is complete!

Write this down:

The second number in the code is 9.

Way to go!

Your time in the cafeteria is complete!

Click here to continue on to the locker room.

WRONG

*Try again!

35.3 L

10.0 L

3.53 L

100 L

1.00 L

0.1 L

Open the locker whose # is the same as the volume of the purple box.

Is closed

Is closed

Is closed

Is closed

Is closed

35.3 L

10.0 L

3.53 L

100 L

0.1 L

What is the density of the purple box?

3.00 kg/L

2.32 kg/L

1.00 kg/L

3.53 kg/L

1.32 kg/L

1.53 kg/L

8.00 kg/L

1.00 kg/L

See the Pen React Calculator by Suzanne (@virtualscienceteachers) on CodePen.

35.3 L

10.0 L

3.53 L

100 L

0.1 L

You got it right!
Click on the key to get into the gym.

Question 1: Which of these balls is the LEAST dense?

Mass = 58 grams
Volume = 149 cm

Mass = 620 grams

Volume = 7000 cm

Mass = 145 grams
Volume = 202 cm

Mass = 420 grams
Volume = 5700 cm

3

3

3

3

Get all 5 questions correct to get the third digit of the code.

Help

To find the density of each ball, divide its mass by its volume.

To determine whether an object will sink or float in water, compare its density to the density of water (1.00 grams/cubic cm). If an object has a density greater than 1.00 grams/cubic cm, it will sink in water. If it has a density that is less than 1.00 grams/cubic cm, it will float.

Something to ponder....what will an object that has the SAME density as water do???

If you do not get all 5 questions correct, you get to try again.

See the Pen React Calculator by Suzanne (@virtualscienceteachers) on CodePen.

Question 1: Which of these balls is the LEAST dense?

Mass = 58 grams
Volume = 149 cm

Mass = 620 grams

Volume = 7000 cm

Mass = 145 grams
Volume = 202 cm

Mass = 420 grams
Volume = 5700 cm

3

3

3

3

You did not get all 5 questions correct.
That's okay! Missed questions are opportunities to learn! Try again!

Help

To find the density of each ball, divide its mass by its volume.

To determine whether an object will sink or float in water, compare its density to the density of water (1.00 grams/cubic cm). If an object has a density greater than 1.00 grams/cubic cm, it will sink in water. If it has a density that is less than 1.00 grams/cubic cm, it will float.

Something to ponder....what will an object that has the SAME density as water do???

See the Pen React Calculator by Suzanne (@virtualscienceteachers) on CodePen.

Question 2: Which of these balls is the MOST dense?

Mass = 58 grams
Volume = 149 cm

Mass = 620 grams

Volume = 7000 cm

Mass = 145 grams
Volume = 202 cm

Mass = 420 grams
Volume = 5700 cm

3

3

3

3

Help

To find the density of each ball, divide its mass by its volume.

To determine whether an object will sink or float in water, compare its density to the density of water (1.00 grams/cubic cm). If an object has a density greater than 1.00 grams/cubic cm, it will sink in water. If it has a density that is less than 1.00 grams/cubic cm, it will float.

Something to ponder....what will an object that has the SAME density as water do???

See the Pen React Calculator by Suzanne (@virtualscienceteachers) on CodePen.

Question 2: Which of these balls is the MOST dense?

Mass = 58 grams
Volume = 149 cm

Mass = 620 grams

Volume = 7000 cm

Mass = 145 grams
Volume = 202 cm

Mass = 420 grams
Volume = 5700 cm

3

3

3

3

Help

To find the density of each ball, divide its mass by its volume.

To determine whether an object will sink or float in water, compare its density to the density of water (1.00 grams/cubic cm). If an object has a density greater than 1.00 grams/cubic cm, it will sink in water. If it has a density that is less than 1.00 grams/cubic cm, it will float.

Something to ponder....what will an object that has the SAME density as water do???

See the Pen React Calculator by Suzanne (@virtualscienceteachers) on CodePen.

Question 3: Would a baseball that lands in water sink or float?

Density of water = 1.00 gram/cm

Mass = 145 grams
Volume = 202 cm

3

3

Sink

Float

Help

To find the density of each ball, divide its mass by its volume.

To determine whether an object will sink or float in water, compare its density to the density of water (1.00 grams/cubic cm). If an object has a density greater than 1.00 grams/cubic cm, it will sink in water. If it has a density that is less than 1.00 grams/cubic cm, it will float.

Something to ponder....what will an object that has the SAME density as water do???

See the Pen React Calculator by Suzanne (@virtualscienceteachers) on CodePen.

Question 3: Would a baseball that lands in water sink or float?

Density of water = 1.00 gram/cm

Mass = 145 grams
Volume = 202 cm

3

3

Sink

Float

Help

To find the density of each ball, divide its mass by its volume.

To determine whether an object will sink or float in water, compare its density to the density of water (1.00 grams/cubic cm). If an object has a density greater than 1.00 grams/cubic cm, it will sink in water. If it has a density that is less than 1.00 grams/cubic cm, it will float.

Something to ponder....what will an object that has the SAME density as water do???

See the Pen React Calculator by Suzanne (@virtualscienceteachers) on CodePen.

Question 4: What is the density of this golf ball?

0.83 g/cm

0.91 g/cm

1.1 g/cm

1.3 g/cm

Mass = 45 grams
Volume = 41 cm

3

3

3

3

3

See the Pen React Calculator by Suzanne (@virtualscienceteachers) on CodePen.

Question 4: What is the density of this golf ball?

Mass = 45 grams
Volume = 41 cm

3

0.83 g/cm

0.91 g/cm

1.1 g/cm

1.3 g/cm

3

3

3

3

Help

To find the density of each ball, divide its mass by its volume.

To determine whether an object will sink or float in water, compare its density to the density of water (1.00 grams/cubic cm). If an object has a density greater than 1.00 grams/cubic cm, it will sink in water. If it has a density that is less than 1.00 grams/cubic cm, it will float.

Something to ponder....what will an object that has the SAME density as water do???

See the Pen React Calculator by Suzanne (@virtualscienceteachers) on CodePen.

Question 5:
Would this golf ball sink or float if it landed in water?
Density of Water = 1.00 gram/cm

Mass = 45 grams
Volume = 41 cm

3

Sink

Float

3

Help

To find the density of each ball, divide its mass by its volume.

To determine whether an object will sink or float in water, compare its density to the density of water (1.00 grams/cubic cm). If an object has a density greater than 1.00 grams/cubic cm, it will sink in water. If it has a density that is less than 1.00 grams/cubic cm, it will float.

Something to ponder....what will an object that has the SAME density as water do???

See the Pen React Calculator by Suzanne (@virtualscienceteachers) on CodePen.

Question 5:
Would this golf ball sink or float if it landed in water?
Density of Water = 1.00 gram/cm

Mass = 45 grams
Volume = 41 cm

3

Sink

Float

3

Help

To find the density of each ball, divide its mass by its volume.

To determine whether an object will sink or float in water, compare its density to the density of water (1.00 grams/cubic cm). If an object has a density greater than 1.00 grams/cubic cm, it will sink in water. If it has a density that is less than 1.00 grams/cubic cm, it will float.

Something to ponder....what will an object that has the SAME density as water do???

See the Pen React Calculator by Suzanne (@virtualscienceteachers) on CodePen.

Great work!

The third number in the security code is 0 (zero).

Click here to continue on to the auditorium.

Try again!

Try again!

Density =

mass

volume

TURN THE PROJECTOR ON

Push the on button.

Answer questions about the video to get the last digit in the code.

Go

Which is the least dense?

The Ping Pong Ball

The Penny

The Oil

Question 1 of 3

Help

Substances that are less dense float in substances that are more dense.

Answer all 3 questions correctly to get the 4th (and final) digit of the code.

If you do not get all 3 questions correct, you get to try again.

Which is the least dense?

The Ping Pong Ball

The Penny

The Oil

Question 1 of 3

Help

Substances that are less dense float in substances that are more dense.

You did not answer all 3 questions correctly.
We grow the most as we overcome challenges. Try again! And don't forget there's a help button!

Which liquid is the most dense?

Oil

Water

Corn Syrup

Question 2 of 3

Help

Substances that are less dense float in substances that are more dense.

Which liquid is the most dense?

Oil

Water

Corn Syrup

Question 2 of 3

Help

Substances that are less dense float in substances that are more dense.

Which liquid is the least dense?

Oil

Water

Corn Syrup

Question 3 of 3

Help

Substances that are less dense float in substances that are more dense.

Which liquid is the least dense?

Oil

Water

Corn Syrup

Question 3 of 3

Help

Substances that are less dense float in substances that are more dense.

CONGRATULATIONS!

The fourth number of the security code is 5.

Write it down!

Click here to continue on to the security room.

_ _ _ _

Click below to enter the 4 digit security code.

Did you forget to write down the code? If so, click here...if you work for it- we will give you a little help.

OK

Click OK to unlock the doors.

The code is correct.

CONGRATULATIONS!

You broke the school's security code in JUST enough time to make it to your birthday party!