rocks and minerals

What can you infer about graphite from the fact that you can scratch it with just your fingernail?

• It's not very lustrous.
• It's not very hard.
• Its streak is black colored.
• It has fracture.

Which mineral is ranked highest on the Mohs scale? 

• Talc
• Calcite
• Quartz
• Diamond

Luster is . . . 

• The weight of a mineral.
• The way light reflects off of a mineral's surface.
• The way light reflects off of a rock's surface.
• The color left after a mineral is scratched.

What is the difference between a rock and a mineral?

• A rock is an inconsistent mixture of minerals, while a mineral is "pure" and made up of a precise combination of chemicals.
• A mineral is an inconsistent mixture of minerals, while a rock is "pure" and made up of a precise combination of chemicals.
• A rock is harder than all minerals.
• Minerals contain fossils while rocks do not.

Wind, water, and ice breaking down rock is called

• Erosion
• Deposition
• Compaction
• Weathering

Tags

NGSS.MS-ESS2-2

When sediments are pressed together tightly, this is called ____________.

• Compaction
• Cementation
• Weathering
• Erosion

Tags

NGSS.MS-ESS2-1

This rock was formed by smaller pieces of rock that settled at the bottom of a lake millions of years ago. What type of rock is this?

• Sedimentary
• Igneous
• Metamorphic

Tags

NGSS.MS-ESS2-3

The color of a mineral in powder form is called the mineral's 

• hardness
• specific gravity
• luster
• streak

By definition, a mineral has which of the following characteristic(s)?

• definite chemical composition
• crystal structure
• naturally occuring
• all of the above

Tags

NGSS.MS-PS1-1

What mineral is used for pencils?

• Graphite
• Galena
• Magnetite
• Quartz