Earth Science Ch. 2 Review: Rocks and Minerals

An igneous rock is formed by

• heat and pressure creating a new rock

• melted rock that cools and hardens

• pieces of rock and other materials squeeze together

metamorphic rock is formed by

• heat and pressure

• melted rock that cools and hardens

• pieces of rock and other materials squeeze together

sedimentary rock is formed by

• heat and pressure

• melted rock that cools and hardens

• pieces of rock and other materials squeeze together

What is a mineral?

• a rock broken into pieces

• a solid, nonliving material found in nature

• the remains of an animal that lived in the past

• Magma

How can the STREAK mineral be tested?

• break it to see if the pieces are sheets

• Rub it across a tile to see the color it leaves

• Shine a bright light onto it to see if it reflects light

• Test its hardness by scratching it with different items

Which property of minerals is measured by scratching the surface?

• Color

• Luster

• Hardness

• Magnetism

Patty is trying to identify a mineral. She notes that the mineral can break easily into flat sections. Which property has she observed?

• Luster

• Streak

• Cleavage

• Hardness

How are obsidian, sandstone, and granite similar?

• They are all rocks

• They all have fossils

• They are all minerals

• They all have the same color

If you find a rock that contains a fossil, you most likely found what type of rock?

• mineral

• igneous

• metamorphic

• sedimentary

Rocks are mostly made of

• dirt

• lava

• fossils

• minerals