Geology Unit Test Practice

the ability of a mineral to resist scratching

• Streak
• Fracture
• Hardness
• Cleavage

The tendency for a mineral to split along specific planes of weakness to form, smooth flat surfaces is called...

• Cleavage
• Fracture
• Crystallization
• Habit

What is the best definition of a mineral?

• living substance
• non-living substance
• solid, organic substance
• naturally formed, inorganic, solid

The color of the powdered form of a mineral found by rubbing a mineral against a white tile.

• Luster
• Cleavage
• Streak
• Fracture

What process is used to form sedimentary rocks?

• Lava cools and hardens to form a rock.
• Bits of sand and gravel form layers that turn into rock from pressure.
• Extreme heat and pressure from inside the Earth turn rocks into new rocks.
• Magma trapped under the Earth's surface cools and solidifies.

What happens when an a rock is cooled extremely fast?

• it develops a glassy texture 
• it develops a fine grained texture
• it develops a coarse texture 
• it develops a molten liquid texture

What has to increase for metamorphism to occur? 

• weathering and erosion
• temperature and pressure
• melting and cooling
• compaction ad cementation

Acid rain is most likely to cause...

• deposition
• glaciers to move
• chemical weathering
• mechanical weathering

Pick the correct difference between a rock and a mineral.

• A rock can be made up of minerals, but minerals cannot be made up of a rock.
• A mineral can be made up of rocks, but rocks cannot be made up of minerals.
• A rock always has the same shape, while minerals may be different in shape.
• A mineral always has the same shape, while a rock may be different in shape.

The rock cycle 

• ends with igneous rock
• begins with igneous rocks
• ends with metamorphic rocks
• has no beginning or end