ESS.1 Flashcard Review

Front

Why does the core produce heat?

Back

Radioactive elements in the core decay and produce heat.

Front

What is the type of seismic wave that moves the ground up and down or side to side?

Back

S wave.

Front

What do scientists study about seismic waves to determine the structure of the Earth?

Back

Speed, path, direction.

Front

What is the inner core made of?

Back

Solid iron and nickel.

Front

What is the Earth's outer core made of?

Back

Liquid iron and nickel.

Front

What are seismic waves?

Back

Waves of energy that travel through the Earth, typically caused by earthquakes.

Front

What is the difference between P waves and S waves?

Back

P waves are primary waves that compress and expand the ground, while S waves are secondary waves that move the ground up and down or side to side.

Front

What is the significance of studying seismic waves?

Back

Studying seismic waves helps scientists understand the Earth's internal structure and the processes that occur within it.

Front

What is the Earth's crust?

Back

The outermost layer of the Earth, composed of solid rock.

Front

What is the mantle?

Back

The layer of the Earth between the crust and the core, composed of semi-solid rock that flows slowly.