Rocks
Natural & Manufactured Materials
Materials Changes
Heating & Cooling Materials
Dissolving
100

Describe the properties of this rock.

rough, bumpy, hard

100

Natural materials come from plants or from animals.

True or False?

True

100
How do you change the shape of some materials?

Name 4 ways.

You squash, bend, twist or stretch them.

100

Why do we need to heat clay pots and bricks before we can use them?

Clay pots and bricks get hard when they are heated.

100

The person add a teaspoon of salt in the water.

The salt seems to disappear.

Where has the salt gone?

It dissolved in the water.

200

Can you name different types of rocks?

sandstone, granite, slate, marble, limestone, etc.

200

Name 5 materials from plants.

cotton, wood, straw, stick, paper, etc.

200

Make a list of five materials.

Write them in order from easiest to squash to the most difficult to squash.

(Student's answer.)

200

What happens to a bread dough when we heat it in an oven?

The bread dough gets bigger and changes into bread.

200

Explain how you can tell that the salt is still in the water.

You taste the water and it's salty.

300

Name three objects that are made from rocks.

diamond ring, clay pot, bricks, wall, etc.
300

Name 5 materials from animals.

wool, leather, feather, fur, ivory, etc.
300

What is a 'rigid' material?

It means a material that cannot be bent.

300

Name two other materials that get soft or melt when they are heated.

chocolate, candle, ice.

300

Which material dissolve in water?

Name 3 materials.

salt, sugar, coffee powder, etc.

400

Rocks are very useful. Name a type of rock and tell us what it is used for.

Granite and marble are often used to build statues or monuments.

Sandstone blocks are used to build walls.

Diamonds and other precious stones are used to make jewellery.

400

Name 3 manufactured materials.

metal, glass, plastic, etc.
400

You blow air into a balloon.

What makes the balloon stretch?

The air.

400

What happens to soft butter when you put it in the fridge?

The butter becomes hard.
400

Which material does not dissolve in water?

Name 3 materials.

sand, pepper, rubber dust, etc.

500

Diamonds are clear and shiny rocks.

Name 5 precious stones that are used to make jewelries.

ruby, emerald, sapphire, amethyst, pearl, etc.

500

Make a list of five different uses of plastic.

They make plastic bottles, plastic bags, toys, buckets, and spoons/forks.

500

What is this person doing?

This person is twisting the cloth to get rid of the water.

500

What other melted materials change back to solids when you cool them?

chocolate and ice.

500

How can we make the materials dissolve faster in water?

You heat the water.

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