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WHICH FORCES ARE INVISIBLE?

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MATTER AND FORCES

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Transcript

Presentation

WHICH FORCES ARE INVISIBLE?

COVER

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THANK YOU!

EXPERIMENTS

VIDEOS

BUOYANCY AND DENSITY

CONTACT FORCES

NON CONTACT FORCES

PROPERTIES OF MATTER

MINDMAP

MATTER

GLOSSARY

BIG QUESTIONS

INDEX

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BIG QUESTIONS

2.

  1. WHAT IS MATTER?
  2. WHICH ARE THE STATES OF MATTER?
  3. WHICH ARE THE PROPERTIES OF MATTER?
  4. WHAT IS A FORCE? WHAT TYPES OF FORCES ARE THERE?
  5. WHAT IS BUOYANCY?

WE ARE GOING TO LEARN:

PROPERTIES7. Hardness8. Flexibility9. Resistance10. Thermal conduction11. Elasticity12. Solubility

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FORCE13. Friction14. Push15. Pull16. Gravity17. Magnetism18. Density19. Buoyancy

MATTER1. Mass2. VolumeSTATES OF MATTER3. Melting4. Evaporating5. Condensating6. Solidifying

GLOSSARY

- Hardness- Flexibility- Resistance- Thermal conduction- Elasticity- Solubility

Buoyancy

Magnetism

Gravity

Non-contact forces

Change of shape

Push and pull

Friction

Contact forces

- Solidifying- Melting- Evaporating- Condansating

changes

Liquidsolidgas

States

its properties are ...

Mass

volume

what is matter?

Matter and Forces

4.

MINDMAP

Watch this video about mass and volume.

The golf ball has more volume than a marble.

The watermelon has more mass than the orange.

Mass is the amount of matter in an object.It is measured with a weighing scale in grams (g) or kilograms (Kg) Volume is the amount of space an object occupies.It is measured with a measuring jug in mililiters (ml) or liters (l).

Matter is anything that occupies space and has mass.

Everything in the Universe is made of matter.

MATTER

Watch this video

solidifying

condensing

evaporating

melting

CHANGES OF STATE

We can find matter in 3 states: SOLID, LIQUID AND GAS. Matter is made up of ATOMS. When TEMPERATURE increases or decreases atoms move closer together or further apart.

STATES OF MATTER

GLASS is FRAGILE

PLASTIC is RESISTANT

RUBBER is FLEXIBLE

WOOD is RIGID

TALC is SOFT

The DIAMOND is HARD

Difficult to break = RESISTANTEasy to break = FRAGILE

3. RESISTANCE

Difficult to bend = RIGIDEasy to bend = FLEXIBLE

2. FLEXIBILITY

Difficult to scratch = HARDEasy to scratch = SOFT

1. HARDNESS

Materials are substances which are made up of matter.To make things, we use different materials depending on their properties.

PROPERTIES OF MATTER

ROCKS are INSOLUBLE

SALT is SOLUBLE

METAL is INELASTIC

RUBBER is ELASTIC

WOOD is an INSULATOR

METAL is a CONDUCTOR

It dissolves in liquid = SOLUBLEIt does not disolve in liquid = INSOLUBLE

Difficult to stretch = INELASTICEasy to stretch = ELASTIC

6. SOLUBILITY

5. ELASTICITY

It lets hot travel = CONDUCTORIt does not let hot travel = INSULATOR

4. THERMAL CONDUCTION

PROPERTIES OF MATTER

FRICTIONEXPERIMENT

CHANGE THE SHAPE

PUSH AND PULL

FRICTION

We apply a force to stretch a rubberband and when we stop, it returns to its original shape.

  • CHANGE THE SHAPE: We apply a force to mould the clay and it keeps the given shape.
  • FRICTION : We apply a force to move a book across the desk.
  • PUSH AND PULL: We apply a force to open a door.

We make contact with an object. Examples:

CONTACT FORCES =

A force is an energy that changes the movement of an object.There are two types of forces: CONTACT FORCES & NON-CONTACT FORCES

FORCES

(THESE ARE INVISIBLE FORCES)

S. S.N. N.

S. NN. S

South pole repeals south pole

Force that attracts or repeals an object with a magnet.There are metals that have magnetic forces like iron, nickel or cobalt.Magnets have two poles: north and south pole.

Force that attracts objects towards each other. More mass = stronger force applied.The Earth has so much mass that its force of gravity pulls everything towards its centre.

DON''T REQUIRE CONTACT WITH AN OBJECT.

North pole attracts South pole

MAGNETISM

GRAVITY

NON-CONTACT FORCES

Whether an object sinks or floats depends on the material:An object with low density of matter FLOATSAn object with high density of matter SINKS

When you place an object in the water, the FORCE OF GRAVITY pushes the object to the bottom BUT other force BUOYANCY pushes the object upwards.

WHICH FORCE STOPS US FROM SINKING?

if you find more interesting experiments, you can send them to us.

STATES OF MATTER

DENSITY

VARIETY

GRAVITY

FORCE

  • Click in the pictures and you will find many experiments that you can try at home with your parents.

EXPERIMENTS

VIDEOS

THANK YOU KIDS!

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