Convection Currents in the Mantle

When molten  material is heated in the mantle it becomes

• more dense

• less dense 

Tags

NGSS.MS-PS1-4

When molten  material is cooled in the mantle the molecules

• expand (spread out)

• condense (shrink together) 

• stay the same

Tags

NGSS.MS-PS1-4

Convection currents occur due to...

• rotation of earth

• differences in temperature and density

• electrons moving

• gravitational pull

Tags

NGSS.MS-ESS2-6

When molten  material is cooled in the mantle it becomes

• more dense

• less dense 

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Molecules that are less dense than the surrounding particles will...

• rise up

• sink down

• stay put

Scientists think that convection currents that move the plates flow in Earth's

• Continental crust

• oceanic crust

• Asthenosphere

• Lithosphere

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-3

Convection currents move magma in the mantle. How does this affect the crust?

• crust has no motion

• crust moves in random directions

• crust moves in same direction as the convection current

• Crust moves in the opposite direction to the convection current

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-2

Where is the magma in the convection current COOLER and MORE DENSE.

• Between A and B

• Between B and C

• Between C and D

• Between D and A

Tags

NGSS.MS-ESS2-1

What causes convection currents in the Earth's mantle?

• Differences in temperature and density

• Earth's magnetic field

• Solar radiation

• Tectonic plate movement

Tags

NGSS.MS-ESS2-1

Which of the following best describes the movement of convection currents in the mantle?

• Circular motion

• Linear motion

• Random motion

• Static motion