General questions
Rocks
Minerals
Properties and uses
100
These are clusters of minerals and other inorganic materials.
Rocks
100

These rocks form when molten lava from volcanoes cools and hardens. What are they called?

Igneous rocks

100

We classify minerals according to their...

Chemical composition

100

Name the tree properties of minerals.

Color

Hardness

Lustre or shininess

200

These are structured crystals that have specific chemical components.


Minerals

200

These rocks consist of layers of other rock fragments, or animal or plant fossils.

Sedimentary rocks

200

We can find several types of minerals of many different colors and sizes in rocks. This is because there are over ___________ types of minerals in the world.

A. 1 million

B. 4 thousand 

C. 3 hundred 

B. 4 000 (Four thousand)

200

What mineral is this? 

They are hard transparent carbon minerals. They are resistant to scratching.

Diamonds

300

The hot liquid inside volcanoes is called...

Magma

300

Some igneous and sedimentary rock is pushed down by other layers of rock forming on top. Extreme heat and pressure 'bakes' this rock and produce...

Metamorphic rocks

300

These minerals are fragile and contain sulphur, oxygen and another metal.

Sulphates

300

This is a soft and smooth mineral and can vary between white, green or grey. It is used in baby powder.

Talc

400

The hot liquid outside volcanoes is called...

Lava

400

If the lava cools _________________, then large crystals form.

a. Fast

b. Dry 

c. Slowly

c. Slowly

400

These minerals are mixtures of metals and oxygen that vary in hardness and color.

Oxides

400

Some rocks can be carved to make statues. Michelangelo's David is made of very fine...

Marble

500

Rocks and minerals make up what layer of the Earth's?

Crust

500

Name an example of metamorphic rock.

Marble

Slate

Gneiss

Phylitte 

500

These minerals only contain one component.

a. Elements

b. Sulphur

c. Water

a. Elements

500

These are red minerals that belong to the oxides category and are used in jewellery.

Rubies

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