Rocks Flashcards
1
Q
What is a rock?
A
An aggregate of minerals that forms more or less a definite unit of the earth’s crust.
2
Q
What are rocks composed of?
A
Rocks are aggregates of mineral elements.
3
Q
What is the difference between rocks and minerals?
A
A rock has no definite chemical composition.
Minerals are organized to form rocks.
4
Q
What are minerals?
A
Solid inorganic substances occurring naturally.
5
Q
What are the three chief types of rocks?
A
Igneous, Sedimentary and Metamorphic.
6
Q
What are the four chief mineral groups?
A
Silicates, carbonates, sulphides and metallic minerals.
Iron, silicon, magnesium, nickel, calcium, potassium, sodium are abundant minerals of the earth.
