Which of the Earth's layers is the least dense?

• Inner Core

• Crust

• Mantle

• Outer Core

Which two metals are the inner and outer core made of?

• lead and iron

• iron and nickel

• lead and mercury

• nickel and mercury

In which layer of the Earth are the tectonic plates located?

• outer core

• lithosphere

• mesosphere

• asthenosphere

What happens to the temperature and pressure as you move from the outside to the inside of the Earth?

• Both increase

• Temperature increases, pressure decreases

• Both decrease

• Temperature decreases, pressure increases

Tags

NGSS.MS-PS1-4

What keeps the inner core solid, even though the temperature is very high?

• The high density level keeps the inner core solid

• The immense amount of pressure causes the inner core to be solid

• The metals that make up the inner core are always solid

What happens to older oceanic crust as new rock is formed during seafloor spreading?

• it becomes new rock

• it is pushed away from the mid-ocean ridge

• it gets pushed under the mid-ocean ridge

• it forms new volcanos on the ocean floor

Tags

NGSS.MS-ESS2-3

Earth's lithosphere sits on top of which layer of the Earth?

• Inner Core

• Outer Core

• Crust

• Asthenosphere

Which of the following statements about Earth's layers is correct?

• The crust is the most dense layer and the inner core is the least dense layer.

• The crust is the thickest layer and the mantle is the thinnest layer.

• The crust is the thinnest layer and the mantle is the thickest layer.

• The inner core is the coolest layer and the crust is the hottest layer.

A student wants to develop a model to illustrate how Earth's magnetic field is produced. Which pair of statements describes characteristics that the student must include in the model?

• The model should show Earth's interior layers. The outer core should be liquid metal and able to move.

• The model should show Earth's interior layers. The solid, outermost layer should be made of several different pieces.

• The model should show the moon's orbit around Earth. An arrow should show the direction the moon pulls on Earth's oceans.

• The model should show the moon's orbit around Earth. An arrow showing Earth's gravitational pull on the moon should point from the moon to Earth.

Which of the following Earth layers has the greatest density?

• crust

• mantle

• outer core

• inner core