Layers of Earth/Seismic Waves

Front

What causes the inner core of the Earth to remain solid?

Back

High pressure prevents the inner core from melting despite high temperatures.

Front

What are the two main sources of thermal energy in the Earth's interior?

Back

Gravity and radioactive decay are the two main sources of thermal energy.

Front

Why was Wegener's theory of continental drift largely rejected by scientists?

Back

It did not explain why the continents moved.

Front

What happens to seismic waves as they travel through different materials in the Earth?

Back

Different materials in the Earth reflect some of the seismic waves.

Front

Which layers of the Earth are responsible for its magnetic field?

Back

The inner and outer core are responsible for the Earth's magnetic field.

Front

What is the composition of the Earth's inner core?

Back

The inner core is primarily composed of iron and nickel.

Front

What is the outer core made of?

Back

The outer core is made of liquid iron and nickel.

Front

What is the mantle, and what is its role in the Earth's structure?

Back

The mantle is a thick layer of semi-solid rock that lies between the crust and the outer core.

Front

How do seismic waves help scientists understand the Earth's interior?

Back

Seismic waves provide information about the composition and state of the Earth's layers based on how they travel through them.

Front

What is the difference between P-waves and S-waves?

Back

P-waves are primary waves that can travel through solids and liquids, while S-waves are secondary waves that can only travel through solids.