Convection Currents and the Mantle

The transfer of heat through the movement of currents within a fluid is called __________________. An example is boiling water.

• conduction

• convection

• radiation

The mantle in the Earth continually heats up and cools down using convection currents.

• True
• False

Tags

NGSS.MS-ESS2-1

____________ occurs when an energy source transfers heat directly to another object through space; an example would be an object becoming warm by sitting in the sunshine.

• conduction
• convection
• radiation
• heat

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

____________ occurs when heat is transferred to an object through direct contact with particles; an example would be the heat from a stove transferring to your hand through the handle on a pot or pan.

• conduction
• convection
• radiation
• heat

Tags

NGSS.MS-PS1-4

Mantle material rises in convection currents because heated materials become more dense.

• True
• False

Tags

NGSS.MS-ESS2-1

When the heat source is removed from a fluid, convection currents in the fluid will ____.

• speed up

• change direction

• continue forever

• slow down and eventually stop

In which TWO layers of the Earth do convection currents occur?

• Crust

• Mantle

• Outer Core

• Inner Core

What happens to the density of a fluid as its temperature increases?

• Density increases

• Density decreases

Which of the following are required to create convection currents? (choose all 3 that apply)

• A heat source

• Rock

• Fluid

• Gravity

• Magnets

What happens to the density of a fluid as its temperature DECREASES?

• Density increases

• Density decreases