Heat Transfer

Question 1

What is thermal energy

Answer 1

A form of kinetic energy

Question 2

What are characteristics

Answer 2

Hotter the substance the faster the particles move

Question 3

What is the temperature

Answer 3

The movement of thermal energy from HOT to COLD

Question 4

What is Celsius

Answer 4

Based on the boiling/freezing point of water

Question 5

What is the boiling point in f

Answer 5

212*F

Question 6

What is the Kelvin scale

Answer 6

Absolute zero is the lowest possible temp

Question 7

0 kelvin

Answer 7

= -273*C

Question 8

What is the formula for c to f

Answer 8

C x 9/5 + 32

Question 9

What is the formula for f to c

Answer 9

F - 32 x 5/9

Question 10

What is ts formula for k to c

Answer 10

K - 273

Question 11

What is the formula for c to k

Answer 11

C + 273

Question 12

What direction does heat move on

Answer 12

HOT to COLD

Question 13

What is a thermal equilibrium

Answer 13

Higher-lower temperature will transfer heat

Question 14

What are three methods of heat transfer

Answer 14

Radiation
Convection
Conduction

Question 15

What is radiation

Answer 15

Uses electromagnetic waves to transfer heat

Question 16

How fast do the waves travel

Answer 16

Speed of light

Question 17

What are examples for radiation

Answer 17

Sun/solar heat
Bonfire
Heat lamp
Light bulb

Question 18

What are the surface materials

Answer 18

Absorption
Reflection
Transmission

Question 19

What is absorption

Answer 19

Dark colours

Question 20

What is reflection

Answer 20

Light colours

Question 21

What is transmission

Answer 21

Clear materials

Question 22

What is convection

Answer 22

The transfer of heat through bulk matter movement

Question 23

What objects are involved

Answer 23

Liquids and gases

Question 24

What is a convection current

Answer 24

Hot particles are spaced out so they’re less dense and rise

Question 25

What happens to cool particles

Answer 25

They're closer together so they're dense and fall

Question 26

What is conduction

Answer 26

Transfer of heat by particle to particle contact

Question 27

What object does it occur in

Answer 27

Solids

Question 28

What happens to the particles

Answer 28

They don't move

Question 29

What is an example

Answer 29

Heat transferred from coil to pot by rapidly vibrations particles. Water heats. Bottom of spoon heats

Question 30

What are conductors

Answer 30

Substances that transfer heat easily

Question 31

What makes a good conductor

Answer 31

A material that allows transfer of heat easily

Question 32

What makes a good conductor

Answer 32

Free electrons act as change barriers constituting to electric current

Question 33

What are some examples

Answer 33

Copper Aluminium Gold Silver

Question 34

What do they all have in common

Answer 34

Used in electronics

Question 35

What is an insulator

Answer 35

A material that transfers heat poorly

Question 36

What makes a good insulator

Answer 36

Any material that doesn't have the ability to conduct electricity

Question 37

What is an example

Answer 37

Air Rubber Wood Plastic

Question 38

What do they all have in common

Answer 38

All used in building materials

Question 39

What is the difference between heat and thermal

Answer 39

Heat is a characteristic of thermal energy