evaporation and condensation
Kathryn Wright
Created on December 13, 2023
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Transcript
SCIENCE
Cool!
Click here to explore the difference
Evaporation vs. Condensation
WEATHER UNIT
Evaporation
watch as this water drop evaporates
IWhat phase change is happening?
liquid to gas
OR
gas to liquid
We will be observing how heat impacts evaporation
We will place ONE drop of water on a paper towel that is kept at room temperature. We will place ONE drop of water on a paper towel that is kept at body temperature. What is the INDEPENDENT VARIABLE in this experiment? (changing on purpose)
temperature
amount of water
type of towel
HOT
Skin temperature is the temperature of the outermost surface of the body. Normal human skin temperature varies between 33.5 and 36.9 °C (92.3 and 98.4 °F)
DID YOU KNOW
NEXT
We are using our skin to heat water today!
DID YOU KNOW
NEXT
Room temperature is around 20–22 °C (68–73 °F)
One eye-dropper
+ YES
Do you have...
materials
Cup of water
Small pieces of paper towel
Pencil
Your notebook
Evaporation lab
1. Take two pieces of paper towel out of the bag.2. Label one HEAT and the other NO heat.
To make sure everyone can see...Your group should create 2 set-ups of this experiment! (so 2 heat and 2 no heat)
Click the paper towels in the picture when you are set up.
3. Use the dropper to put ONE drop of water on each paper towel.
ONLY ONE on each!
Next
one drop
one drop
add heat
Wrap the paper towel labeled heat, firmly around your arm. Hold it there and do not let go!
Place the NO heat papertowel on the lab table.
CONTINUE
heat
skin temp is around 98*F
04:00
WAIT and OBSERVE
Sort the cards into two piles while you wait.
check your work
Evaporation
Condensation
liquid to a gas
gas to a liquid
CONTINUE
energy is gained/added (heat)
energy is removed (cooled)
do you see what I see?
How did heat impact evaporation rate?
heat decreased the evaporation
heat increased the evaporation
heat did not impact the evaporation
rremove the paper towel from your arm and compare it to the one on the counter.
Add to your chart
evaporation
condensation
liquid to a gas
gas to a liquid
energy is gained/added (heat)
energy is removed (cooled)
increasing the heat energyincreases the rate of evaporation
draw
write
click here when your notebook is complete
clean up
Put used paper towels in the garbage
Make sure your bin looks like this
Our table is clean and our bin looks like this!
evaporation adds water vapor to the air.
WOW
+ info
Click a water vapor particle
Click where water the water molecules are cooling and clumping together to form droplets.
cooling
condensation
watch as water vapor from the air condenses and forms drops on the glass
IWhat phase change is happening?
liquid to gas
OR
gas to liquid
We will be observing how COOLING impacts Condensation
We will place ice on top of a warm cup of water in this experiment. We will also have a warm cup of water without ice on top. What is the INDEPENDENT VARIABLE in this experiment?
cooling/not cooling the air above the water
changing the amount of water in each cup
Using different liquids in the cups
Set up!
4 plastic cups
1/2 cup warm water(equal in both)
NO ice cube
then click here to start the timer.
one ice cube
Set up your lab exactly like this picture-
03:00
WAIT and OBSERVE
Sort the cards into two piles while you wait.
check your work
Evaporation
Condensation
liquid to a gas
gas to a liquid
CONTINUE
energy is gained/added (heat)
energy is removed (cooled)
While you wait, use the magnifying class to observe what you see happening in the cups!
Time to carefully remove the ice cube and put it in the closest sink.
Observe the condensation that formed at the top of both cups. What do you notice?
CONTINUE
Do you see what I see?
Click on the cup with lots of condensation to move on.
+ info
MAGIC
Add to your chart
evaporation
condensation
liquid to a gas
gas to a liquid
energy is gained/added (heat)
energy is removed (cooled)
cooling increases the rate of condensation
draw
write
click here when your notebook is complete
increasing the heat energyincreases the rate of evaporation
clean-up
Make sure your bin looks like this
Our table is clean and our bin looks like this!
1. Bring your journal to a teacher to be graded for effort, completeness and neatness!
NICE WORK!
WOW
2. Click here when your journal has been checked.
CONTENT
20XX-20XX
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CONTENT
TOP
20XX-20XX
We are in the age of the digital information boom. As a result, the way we obtain information has changed from traditional reading to a cognitive strategy based on navigation.
COntextualize your topic
CONTENT
+ info
20XX-20XX
We generally grasp visual content better. Visual content is associated with cognitive and psychological mechanisms. We receive information through our eyes; the first image is what counts. We associate visual content with emotions.
♫♫
COntextualize your topic
CONTENT
???
COntextualize your topicwith a subtitle
QUIZ
♥100
Creativity
20XX-20XX
01/05
QUESTION
20XX-20XX
02/05
QUESTION
Interactivity
20XX-20XX
03/05
QUESTION
Design
20XX-20XX
04/05
QUESTION
Multimedia
20XX-20XX
05/05
QUESTION
Yeah!
Here you can include a text to congratulate and wish your class luck at the end of the quiz.
CONGRATULATIONS!
20XX-20XX
Don’t forget to LOOK at the paper towelsssss!
Which one was heated?Which one evaporated first?
THINK ABOUT IT
when water evaporates
LIQUID
GAS
MOVE ON
DESIGN
MAGIC
WOW
wow
UP!
♥100
UP!
NICE!
DESIGN
wow
WOW
MAGIC
DESIGN
wow
♥100
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Did you know? We retain 42% more information when the content has movement. It may be the most effective resource for capturing your students’ attention.
Add this information to your journal t-chart.
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With this feature ...You can add additional content that will excite your students’ brains: videos, images, links, interactivity ...Whatever you like!
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TITLE HERE
Did you know? We retain 42% more information when the content has movement. It may be the most effective resource for capturing your students’ attention.
The cup with the ice has more condensation drops on the inside than the cup without the ice!
increases the rate of condensation
Cooling
MORE droplets of water show that the water vapor trapped in the cup stuck to the roof of the cup and condensed into water drops. Cooling = more condensation!
The cup with NO ICE has less condensation in the cup as compared to the cup with the ice!
WATCH THIS VIDEO ABOUT CONDENSATION
Did you get it right?