What is Geology?

• The study of plants

• The study of rocks and the Earth's surface

• The study of animals, including humans

• The study of extraterrestrials

This layer of the earth is the thinnest part

• crust

• outer core

• mantle

• inner core

What is the correct order (starting from the surface) of Earth’s layers?

• mantle, outer core, inner core, crust
• crust, mantle, outer core, inner core
• outer core, inner core, crust, mantle
• crust, outer core, inner core, mantle

All rocks are made up of one or more.

• sediments

• minerals

• metals

• magma

To test the Mohs levels of rock, you used a penny, steel nail, fingernail, and glass plate. What were you testing?

• mineral properties
• mineral hardness
• mineral streak
• mineral luster

________________ describes how light reflects off a mineral.

• Luster
• Hardness
• Fracture
• Color

What is the softest mineral?

• sulfur

• calcite

• talc

• corundum

What type of rock is formed when magma and lava cools and hardens?

• minerals
• sedimentary
• igneous
• metamorphic

Hot, molten rock inside the earth is called ...

• lava

• magma

• igneous rock

• minerals

Once magma reaches the earth's surface, it is called __________.

• a vent

• minerals

• igneous rocks

• lava