Earth's Crust Review

Earth's innermost layer is the ________.

• mantle

• outer core

• crust

• inner core

The thin, outermost layer of Earth is the __________.

• inner core

• crust

• outer core

• mantle

The middle layer of the Earth is the ________.

• outer core

• inner core

• mantle

• crust

What is the type of rock that forms when sand or small bits of stone are cemented together?

• sedimentary

• metamorphic

• igneous

What type of rock forms when melted rock from inside Earth cools and hardens?

• igneous

• sedimentary

• metamorphic

What type of rock forms when other rocks are changed by heat and pressure?

• igneous

• sedimentary

• metamorphic

What are the remains of a once-living plant or animal?

• soil

• fossils

• landforms

• mineral

The process in which weathered rock is carried from one place to another is called ________.

• weathering

• humus

• erosion

• soil

The breaking up or wearing away of rock is a process called __________.

• weathering

• erosion

• humus

• fossil

The top layer of soil is called ________. It contains humus and and is the perfect place for plants to grow.

• topsoil

• subsoil

• bedrock