Earths interior

What is an earthquake?

• A volcanic eruption that causes ground shaking.

• The shaking of the Earth's surface caused by the sudden release of energy in the Earth's lithosphere.

• A weather phenomenon that results in strong winds.

• A type of seismic wave that travels through the Earth's crust.

What is the Earth's outer core?

• A solid layer composed mainly of iron and nickel located above the mantle.

• A liquid layer composed mainly of iron and nickel located above the inner core and below the mantle.

• A gaseous layer surrounding the Earth composed of hydrogen and helium.

• A solid layer made of rock and minerals located beneath the Earth's crust.

What are surface waves?

• Seismic waves that travel along the Earth's surface and typically cause the most damage during an earthquake.

• Waves that travel through the Earth's interior and are responsible for the initial shaking during an earthquake.

• Waves that are generated by ocean currents and have no relation to seismic activity.

• Waves that occur in the atmosphere and are caused by weather phenomena.

What are S-Waves?

• Seismic waves that can travel through both solids and liquids.

• Seismic waves that can only travel through solids and are slower than P-Waves.

• Seismic waves that are faster than P-Waves and can travel through gases.

• Seismic waves that are generated by volcanic activity.

How does temperature change as you go deeper into the Earth?

• Temperature decreases as you go deeper into the Earth.

• Temperature remains constant regardless of depth.

• Temperature generally increases as you go deeper into the Earth, due to geothermal gradients.

• Temperature fluctuates randomly with depth.

How does pressure change as you go deeper into the Earth?

• Pressure decreases due to the lack of materials above.

• Pressure remains constant regardless of depth.

• Pressure increases as you go deeper into the Earth due to the weight of the overlying materials.

• Pressure fluctuates based on geological activity.

What is the asthenosphere?

• A solid layer of the Earth's crust

• The semi-fluid layer of the mantle beneath the lithosphere

• The outermost layer of the Earth

• A layer of the atmosphere that affects weather patterns

What is a seismic wave?

• A type of sound wave produced by thunder.

• An elastic wave generated by an earthquake or other seismic sources, traveling through the Earth.

• A wave that travels through water, like a tsunami.

• A wave created by volcanic eruptions that travels through the atmosphere.

What is the mantle?

• A layer of gas surrounding the Earth

• The thick layer of rock between the Earth's crust and outer core, composed of silicate minerals.

• The outermost layer of the Earth made of solid rock

• A liquid layer beneath the Earth's crust

What is density?

• Density is the mass of a substance divided by its volume.

• Density is the weight of a substance divided by its area.

• Density is the volume of a substance divided by its mass.

• Density is the temperature of a substance divided by its pressure.