Seismic Waves and Layers of the Earth

Which of the following apply to p-waves? (choose ALL that apply)

• compressional waves

• travel through solids, liquids, and gases

• only travel through solids

• fastest moving seismic waves

• shear waves

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Which of the following apply to s-waves? (choose ALL that apply)

• compressional waves

• travel through solids, liquids, and gases

• only travel through solids

• second fastest moving seismic wave

• shear waves

Where is heat and pressure the greatest in the Earth?

• crust

• mantle

• outer core

• inner core

How have scientists been able to infer the internal structure of Earth without being able to directly observe inside the Earth?

• Scientists analyze how earthquake waves move throught Earth's interior.

• Scientists use satellite radar and sonar technologies to map Earth's internal layers.

• Scientists make educated guesses about Earth's internal structure based on previous hypothesis.

• Scientists study different types of rocks from many different locations on Earth's surface.

What is one of the primary sources of heat in the earth's interior?

• heat from the sun

• microwave radiation

• radioactive decay

• kinetic energy as we move in orbit around the sun

Violent collisions of planetesimals during the formation of the planet generated a significant amount of earth's internal heat.

• true

• false

Tags

NGSS.HS-ESS1-6

NGSS.HS-ESS2-3

What layer of the earth primarily produces heat from radioactive decay?

• crust

• mantle

• outer core

• inner core

What layer of the earth allows for convection currents to happen as it receives the heat from radioactive decay?

• crust

• mantle

• outer core

• inner core

Which layer of the earth is the least dense layer?

• crust

• mantle

• outer core

• inner core

The layers of the earth forming according to their density is known as:

• density columns

• layered earth theory

• planetary differentiation

• I can't think of another misleading option