The Earth
Earthquakes
Volcanoes
Natural Resources
Small Things
100

The outermost layer of the earth

What is the crust?

100

Breaks in the earth's surface along which rock can move

What are faults?

100
Melted rock beneath the surface of the earth

What is magma?

100

Natural resources that can be replaced (like trees)

What are renewable resources?
100

The smallest living unit

What is a cell?

200

The innermost layer of the earth?

What is the core?

200

The beginning point of an earthquake

What is the focus?

200

A scientist who studies volcanoes

What is a volcanologist?

200

Petroleum, natural gas, and coal

What are fossil fuels?

200

The smallest piece of an element that can be recognized as that element

What is an atom?

300

The layer of the earth between the crust and the core

What is the mantle?

300

The point on the surface of the earth directly above the focus

What is the epicenter?

300

Melted rock that comes out of a volcano

What is lava?

300

Another name for crude oil

What is petroleum?

300

The control center of a cell

What is the nucleus?

400

The area consisting of the crust and upper mantle of the earth

What is the lithosphere?

400

A scientist who studies the movements of the earth

What is a seismologist?

400

A volcano that is never expected to erupt again

What is extinct?

400

Chemicals that are made from crude oil (like gasoline and plastic)

What are petrochemicals?

400

The positively charged particle inside an atom

What is a proton?

500

The places where tectonic plates meet

What are plate boundaries?

500

The scale used to measure the magnitude of earthquakes

What is the  Richter scale?

500

A volcanic rock that can sometimes float?

What is pumice?

500

A solid fossil fuel formed from dead plants and animals

What is coal?

500

The jelly-like substance inside a cell

What is cytoplasm?

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