These rocks form when molten lava from volcanoes cools and hardens. What are they called?
Igneous rocks
We classify minerals according to their...
Chemical composition
Name the tree properties of minerals.
Color
Hardness
Lustre or shininess
These are structured crystals that have specific chemical components.
Minerals
These rocks consist of layers of other rock fragments, or animal or plant fossils.
Sedimentary rocks
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)
What mineral is this?
They are hard transparent carbon minerals. They are resistant to scratching.
Diamonds
The hot liquid inside volcanoes is called...
Magma
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
These minerals are fragile and contain sulphur, oxygen and another metal.
Sulphates
This is a soft and smooth mineral and can vary between white, green or grey. It is used in baby powder.
Talc
The hot liquid outside volcanoes is called...
Lava
If the lava cools _________________, then large crystals form.
a. Fast
b. Dry
c. Slowly
c. Slowly
These minerals are mixtures of metals and oxygen that vary in hardness and color.
Oxides
Some rocks can be carved to make statues. Michelangelo's David is made of very fine...
Marble
Rocks and minerals make up what layer of the Earth's?
Crust
Name an example of metamorphic rock.
Marble
Slate
Gneiss
Phylitte
…
These minerals only contain one component.
a. Elements
b. Sulphur
c. Water
a. Elements
These are red minerals that belong to the oxides category and are used in jewellery.
Rubies