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Science > Heat Transfer > Flashcards

Heat Transfer Flashcards

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1
Q

What is thermal energy

A

A form of kinetic energy

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2
Q

What are characteristics

A

Hotter the substance the faster the particles move

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3
Q

What is the temperature

A

The movement of thermal energy from HOT to COLD

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4
Q

What is Celsius

A

Based on the boiling/freezing point of water

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5
Q

What is the boiling point in f

A

212*F

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6
Q

What is the Kelvin scale

A

Absolute zero is the lowest possible temp

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7
Q

0 kelvin

A

= -273*C

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8
Q

What is the formula for c to f

A

C x 9/5 + 32

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9
Q

What is the formula for f to c

A

F - 32 x 5/9

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10
Q

What is ts formula for k to c

A

K - 273

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11
Q

What is the formula for c to k

A

C + 273

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12
Q

What direction does heat move on

A

HOT to COLD

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13
Q

What is a thermal equilibrium

A

Higher-lower temperature will transfer heat

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14
Q

What are three methods of heat transfer

A

Radiation
Convection
Conduction

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15
Q

What is radiation

A

Uses electromagnetic waves to transfer heat

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16
Q

How fast do the waves travel

A

Speed of light

17
Q

What are examples for radiation

A

Sun/solar heat
Bonfire
Heat lamp
Light bulb

18
Q

What are the surface materials

A

Absorption
Reflection
Transmission

19
Q

What is absorption

A

Dark colours

20
Q

What is reflection

A

Light colours

21
Q

What is transmission

A

Clear materials

22
Q

What is convection

A

The transfer of heat through bulk matter movement

23
Q

What objects are involved

A

Liquids and gases

24
Q

What is a convection current

A

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

25
Q

What happens to cool particles

A

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

26
Q

What is conduction

A

Transfer of heat by particle to particle contact

27
Q

What object does it occur in

A

Solids

28
Q

What happens to the particles

A

They don’t move

29
Q

What is an example

A

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

30
Q

What are conductors

A

Substances that transfer heat easily

31
Q

What makes a good conductor

A

A material that allows transfer of heat easily

32
Q

What makes a good conductor

A

Free electrons act as change barriers constituting to electric current

33
Q

What are some examples

A

Copper
Aluminium
Gold
Silver

34
Q

What do they all have in common

A

Used in electronics

35
Q

What is an insulator

A

A material that transfers heat poorly

36
Q

What makes a good insulator

A

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

37
Q

What is an example

A

Air
Rubber
Wood
Plastic

38
Q

What do they all have in common

A

All used in building materials

39
Q

What is the difference between heat and thermal

A

Heat is a characteristic of thermal energy

Science (19 decks)

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