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.