Section 1.2 Study Guide

Question 1

What are the 3 types of heat transfers?

Answer 1

Radiation, Conduction, and Convection

Question 2

What does it mean if something is cold?

Answer 2

The energy is being absorbed into something or someone

Question 3

What does it mean if something is hot?

Answer 3

The energy is coming off of something or someone

Question 4

What is the heat transfer law?

Answer 4

That heat always moves from a warmer substance to a cooler substance

Question 5

What is Radiation?

Answer 5

The transfer of heat through space

Question 6

What are examples of radiation?

Answer 6

Radiators, fires, and microwaves

Question 7

What is Conduction?

Answer 7

Heat transfers within a material or between materials that are touching

Question 8

___________ is responsible for some of the ______ __________ inside earth

Answer 8

Conduction, Heat, Transfers

Question 9

True or False: Sunlight is convection that warms Earth’s Surface

Answer 9

False, Sunlight is conduction that warms Earth’s Surface

Question 10

When does Conduction happen?

Answer 10

When the heated particles of a substance transfer heat through contact with other particles in the substance

Question 11

When something is heated its molecules __________ __________

Answer 11

Vibrate Faster

Question 12

What is Convection?

Answer 12

Heat Transfers by the movement of fluids that are either liquid or gases

Question 13

How does Convection work outside?

Answer 13

• Air heats and rises over the land
• The air cools by water
• The process then keeps repeating

Question 14

Cold Air _____ and warm air _______

Answer 14

Sinks, rises

Question 15

What are convection heat currents caused by?

Answer 15

difference in temperature and density within a fluid

Question 16

What is density?

Answer 16

A measure of how much mass there is in a volume of a substance

Question 17

What happens in Convection

Answer 17

• a liquid or gas in heated
• The particles move faster
• the particles of of the heated fluid occupy more space and spread apart
• The fluid’s density decreases

Question 18

What happens when a fluid becomes cooler?

Answer 18

its particles move more slowly and settle together more closely and their density increases

Question 19

How is it possible for mantle rock to flow?

Answer 19

Over millions of years, the great heat, and pressure in the mantle caused solid rock to flow very slowly

Question 20

What causes convection currents in the Mantle?

Answer 20

Heat from the core and the mantle itself