Convection And The Mantle

Question 1

What are the 3 types of heat transfers

Answer 1

Radiation
Conduction
Convection

Question 2

Radiation

Answer 2

The transfer of energy through empty space; has no direct contact between heat source and an object (ex. Sunlight warming earth’s surface)

Question 3

Conduction

Answer 3

Heat transfer by direct contact of particles of matter (ex. Metal spoon heating up I a pot of hot soup)

Question 4

Convection

Answer 4

Transfer of heat by the movement of a heated fluid (includes liquids and gases) Heat transfer by convection is caused by differences in temperature and density within a fluid

Question 5

Density

Answer 5

Measure of how much mass there is in a volume of a substance

Question 6

What causes a Convection current or the flow that transfers heat

Answer 6

Ex. Heating water on a stove - as water on the bottom gets hot it expands, becomes less dense and rises; when the surface water starts warming up it becomes denser and moves to the bottom causing a convection current

Question 7

Where do convection currents flow

Answer 7

In the mantle (heat source is the earth’s core and from the mantle itself)

Question 8

What do convection currents act like

Answer 8

Acts like a conveyor belt (by moving the lithosphere above)