Rocks and Minerals

Hardness is

• the color of the powder left behind when a mineral is scratched
• the ability to resist being scratched
• material made up of one or more minerals
• how a mineral's surface looks when light reflects from it

Igneous rock is

• a rock that has been changed by high heat and pressure
• forms when rock pieces deposited over time are squeezed together
• rock that forms when melted rock hardens
• the pattern of slow changes in rock from one kind to another

Luster is

• a mineral's ability to resist being scratched
• the color of the powder left behind when scratched
• the patterns of slow changes in rock from one kind to another
• describes how a mineral's surface looks when light reflects from it

Metamorphic rock is

• a rock that has been changed by high heat and pressure
• forms when rock pieces depostied over time are squeezed and stuck together
• rock that forms when melted rock hardens
• the color of the powder left behind on a streak plate

A mineral is

• the color left behind on a streak plate
• material made up of one or more minerals
• rock that forms when melted rock hardens
• a natural solid that has its particles arranged in a crystal pattern

Rock is

• a natural solid that has its particles arranged in a crystal pattern
• material made up of one or more minerals
• a mineral's ability to resist being scratched
• the pattern of slow changes in rock from one kind to another

Rock cycle is

• material made up of one or more minerals
• a natural solid that has its particles arranged in a crystal pattern
• the pattern of slow changes in rock from one kind to another
• forms when rock pieces deposited over time are squeezed together

Sedimentary rock is

• rock that forms when melted rock hardens
• a rock that has been changed by high heat and pressure
• material made up of one or more minerals
• forms when rock pieces deposited over time are squeezed and stuck together

Streak is

• a mineral's ability to resist being scratched
• a natural solid that has its particles arranged in a crystal pattern
• describes how a minerals's surface looks when light reflects from it
• the color of the powder left behind when scratched

How are minerals classified?

• By their magma
• By color, weight, and size
• By streak, luster, and hardness
• By smelling them