Topic 9'Rocks Flashcards
1
Q
What are minerals?
A
Minerals are the substance that make up rocks
2
Q
Define Lithosphere.
A
Lithosphere is the outermost layer of the earth
3
Q
What is magma?
A
Magma is a hot mixture of rock and gases, just below the earth’s surface
4
Q
What are sediments?
A
Material broken down by weathering and erosion
5
Q
Define native elements.
A
Elements found uncombined in the earth’s crust
6
Q
What are crystals?
A
Geometrically shaped substance made up of atoms and molecules.
7
Q
How can you tell a mineral is lustre?
A
The way it reflects light
8
Q
What is a streak
A
Colour of mineral as fine powder
9
Q
Define hardness
A
To measure how difficult it is to scratch the surface of a solid mineral
