Convection and Hot Spots

When the Earth's asthenosphere cools off it becomes _______ dense and ___.

• More / Sinks

• Less / Sinks

• More / Rises

• Less / Rises

Tags

NGSS.MS-ESS2-1

NGSS.MS-PS1-4

What is CONVECTION? (Select all that apply)

• The transfer of heat by the movement of a heated solid.

• When heated particles become less dense and rise, then they cool off become more dense and sink.

• The transfer of heat when cold matter rises and heated matter sinks.

What is a CONVECTION CURRENT?

• The transfer of matter from high temperatures to low temperaures.

• The transfer of heat within a fluid

• A current of air circulating.

Tags

NGSS.MS-ESS2-6

Where do convection currents flow in the Earth?

• lithosphere

• inner core

• asthenosphere

• crust

Tags

NGSS.MS-ESS2-6

What is the heat source for convection currents in the Earth?

• The sun

• Nuclear power plants

• Heat from the core and the mantle

• Heat from the Earth's oceans.

Tags

NGSS.MS-ESS2-1

How does heating affect the density within a convection current?

• When an fluid is heated, it moves faster and becomes less dense.

• When a fluid is heated it moves slower and becomes more dense.

• When a fluid is heated it moves slower and becomes less dense.

• When a fluid is heated it moves faster and becomes more dense.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

How does cooling affect the density within a convection current?

• When an fluid cools off, it moves faster and becomes less dense.

• When a fluid cools off it moves slower and becomes more dense.

• When a fluid cools off it moves slower and becomes less dense.

• When a fluid cools off it moves faster and becomes more dense.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is happening to the convection currents at a DIVERGENT plate boundary

• the current is falling

• the current is rising

Tags

NGSS.MS-ESS2-1

What is happening to the convection currents at a CONVERGENT plate boundary

• the current is falling

• the current is rising

Tags

NGSS.MS-ESS2-1

Are hot spots only found on plate boundaries?

• No, they can be found anywhere (Yellowstone and Hawaii are not on plate boundaries)

• Yes, they only occur at plate boundaries

Tags

NGSS.HS-ESS1-5