- 1. Minerals are made of ____________.
A) rocks
B) crystals
C) oxygen
D) dirt
- 2. Solids that are made of crystals and are found in the earth's crust are called _________.
A) minerals
B) rocks
C) fools gold
D) crystals
- 3. When you test a mineral's _____________, you scratch it with different materials.
A) luster
B) hardness
C) color
D) streak
- 4. The way a mineral reflects light is called its ________.
A) hardness
B) luster
C) color
D) streak
- 5. The way a mineral breaks is called the mineral's __________.
A) hardness
B) luster
C) color
D) cleavage
- 6. Why don't all rocks look alike?
A) They are formed from different minerals.
B) All rocks are alike.
C) They are formed from different rocks.
D) Chemical weathering changes the appearance of all rocks.
- 7. A solid mixture of different minerals are called ____________.
A) compounds
B) mineral compounds
C) magma
D) rocks
- 8. Igneous rocks are formed from _________.
A) water and mud
B) oxygen and hydrogen
C) humans
D) magma
- 9. Lava that cools slowly forms __________ crystals.
A) small
B) large
- 10. ______________ rocks are composed of layered sediments, or small rock particles.
A) Igneous
B) Sedimentary
C) Metamorphic
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