heating and cooling

Question 1

convection

Answer 1

When you heat a gas or liquid, the particles move up.

Question 2

conduction

Answer 2

conduction is one of the ways in which thermal energy is transferred.

Question 3

radiation

Answer 3

this is the transfer of HEAT ENERGY by waves.

Question 4

what temp does water boil at?

Answer 4

100 degrees Celsius

Question 5

evaporation

Answer 5

change of a liquid into a gas

Question 6

contraction

Answer 6

this happens in particles when the object gets heated up and the spaces move closer together

Question 7

convection current

Answer 7

circular movement of hot gas

Question 8

expand

Answer 8

when particles are heated causing spaces to expand

Question 9

what temp is your body?

Answer 9

37 degress

Question 10

normal room temp

Answer 10

20 degrees

Question 11

what temp does water freeze

Answer 11

0 degrees Celsius

Question 12

does sun give heat

Answer 12

yes it does, it varies in different countries.

Question 13

what temp is a cup of tea

Answer 13

75 degrees Celsius (approximately)

Question 14

condensation

Answer 14

when gas particles turn to a liquid

Question 15

expansion in solids

Answer 15

Substances expand or get bigger when they are heated up. They contract or get smaller when they are cooled down. This property can be useful.

Question 16

thermal insulator

Answer 16

material that allows little heat energy to flow through

Question 17

thermal conductor

Answer 17

a material that allows heat energy to flow easily

Question 18

heat energy

Answer 18

this is the transfer of heat through waves

Question 19

what happens to a solid when heated

Answer 19

it vibrates

Question 20

what temp is a bath approximately

Answer 20

50 degrees Celsius