What is the primary contributor to the heat of Earth's inner core?

• Heat emitted by the solidification of the outer core

• Residual heat from planetary formation

• Heat from the sun

• Decay of radioactive elements

Tags

NGSS.HS-ESS2-3

What is the approximate temperature of Earth's outer core?

• 15,000 degrees C

• 2,000 degrees C

• 10,000 degrees C

• 5,000 degrees C

What is the composition of the mantle?

• Magnesium, silicon and oxygen

• Iron and nickel

• Uranium, thorium and potassium

• Silicon and magnesium

What is the thickness of the asthenosphere?

• 500 km

• 300 km

• 100 km

• 180 km

What is the temperature range of the lithosphere?

• 300 to 800 degrees C

• 0 to 500 degrees C

• 100 to 600 degrees C

• 200 to 700 degrees C

What is the primary reason for studying Earth's layers?

• Understanding the formation of mountains

• All of the above

• Understanding the Earth's magnetic field

• Understanding volcanic activity and earthquakes

Tags

NGSS.MS-ESS1-4

Why does Earth have different layers?

• Due to phase transitions within the layers

• All of the above

• Due to the separation of metal and rock during formation

• Due to the different materials the Earth is made of

Tags

NGSS.MS-ESS2-1

How do seismic waves help in understanding Earth's layers?

• By detecting the presence of liquids in the Earth's interior

• By detecting the density of the material through which the waves travel

• By detecting the velocity and direction of wave travel

• All of the above

Tags

NGSS.MS-PS4-2

What is the primary composition of oceanic crust?

• Dark basalt rocks rich in silicon and magnesium

• Light-colored granite rocks containing oxygen and silicon

• Metallic rocks rich in iron and nickel

• Dense rocks rich in uranium and thorium

How do the layers of other rocky planets compare to Earth's layers?

• They have no layers at all

• They have the same layers with the same thickness and sub-layers

• They have completely different layers due to being made of different materials

• They have broadly similar layers but with different thicknesses and sub-layers