Earth (SOL)

Front

What is the outer core of the Earth?

Back

The outer core is the layer of the Earth made of liquid iron and nickel.

Front

Why are the oldest fossils found at the bottom of rock layers?

Back

The oldest fossils are found at the bottom because they were formed first and have been buried under newer layers.

Front

What type of rock is formed through crystallization?

Back

Igneous rock is the product of crystallization.

Front

What is sedimentary rock?

Back

Sedimentary rock is formed when bits of other rocks and organic materials are pressed and cemented together.

Front

What is a divergent plate boundary?

Back

A divergent plate boundary is where two tectonic plates move away from each other.

Front

What is the mantle of the Earth?

Back

The mantle is the thick layer of rock between the Earth's crust and outer core.

Front

What is the crust of the Earth?

Back

The crust is the outermost layer of the Earth, consisting of solid rock.

Front

What is metamorphic rock?

Back

Metamorphic rock is formed when existing rocks are changed by heat, pressure, or chemical processes.

Front

What is the process of sedimentation?

Back

Sedimentation is the process where particles settle out of a fluid and accumulate as sediment.

Front

What is the rock cycle?

Back

The rock cycle is the continuous process of rock formation, breakdown, and reformation.