7th Grade Unit 1 Test

This mineral property is determined by scraping a mineral against a white tile and observing the color of the powdered form of the mineral left behind on the tile.

• Luster
• Cleavage
• Fracture
• Streak

A student scratches a mineral with multiple reference materials, including their fingernail, a penny, and an iron nail in order to see what material will scratch it. The student then refers to Moh's scale. This student is trying to determine the _______________ of the mineral.

• Streak
• Fracture
• Hardness
• Cleavage

Oxidation, the process by which oxygen reacts with iron to create rust,  is most likely to cause ______________.

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

What type of rocks would most likely be found near a divergent plate boundary?

• all rock types
• igneous rock
• sedimentary
• metamorphic

Brazil is located near the equator and experiences warm temperatures throughout the year with lots of precipitation (rain). The Sahara desert is hot and receives very little rainfall each year. Which location, Brazil or the Sahara desert, would experience faster chemical weathering?

• Brazil
• Sahara Desert
• Both have the same rate of chemical weathering
• Neither location experiences chemical weathering

Wind blowing sand from one location to another

• Weathering
• Erosion
• Deposition
• Melting

Which type of rock forms from extreme heat and pressure?

• Igneous
• Sedimentary
• Organic
• Metamorphic

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.

Refer to the diagram of the rock cycle. A metamorphic rock changes into an igneous rock by what two processes?

• Melting and cooling
• Extreme heat and pressure
• Compaction and cementation
• Weathering and erosion

Rock that forms when minerals form from solutions or sediment from older rocks get pressed and cemented together.

• Sedimentary Rock
• Metamorphic Rock
• Igneous Rock
• All of the above