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NST GRADE 4 > NST Term 3 Energy and sound > Flashcards

NST Term 3 Energy and sound Flashcards

1
Q

What is Energy

A

Makes things move, happen or change

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2
Q

What is Source of energy

A

Something that we get energy from

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3
Q

What are Nutrients

A

Things in food that you need to live

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4
Q

Everything we use needs

A

Energy

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5
Q

What do living things use energy for?

A

To grow, to breathe, to move and to feed

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6
Q

What is a source of energy

A

Food

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7
Q

What does your muscles use when you run

A

Energy

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8
Q

where is energy stored

A

In food

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9
Q

What happens with food in our bodies

A

Food is broken down and changed to energy

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10
Q

Where does energy also come from?

A

From the sun

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11
Q

A source of energy

A

The sun

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12
Q

What do plants do with light energy

A

They make food

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13
Q

What do plants use to make food

A

Sunlight

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14
Q

What do plants use their energy for?

A

To grow

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15
Q

What is Transfer of Energy

A

How energy goes from one part of an energy change to another

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16
Q

What is an Energy Chain

A

The order of which energy goes from the sun, to a plant or animal

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17
Q

Two types of energy?

A

Light and heat

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18
Q

What types of energy does the sun give

A

Light and heat

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19
Q

What do plants do with light energy from the sun?

A

They turn it into energy that is stored in food.

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20
Q

Where do animals get their energy from

A

From their food

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21
Q

Example of an energy train

A

Sun - grass - cow - milk

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22
Q

Something we get energy from

A

Source

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23
Q

Substances in food that living things need to live, grow and stay healthy

A

Nutrients

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24
Q

What is the process by which energy goes from one part of and energy train to another

A

Energy transfer

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25
Q

What makes things happen, move or change

A

Energy

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26
Q

Where does my body get energy from

A

From the food I eat

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27
Q

The energy in food comes from?

A

The sun

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28
Q

Plants uses what type of energy from the sun to make food?

A

Light energy

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29
Q

What is a System

A

Something that has 2 or more parts that work together

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30
Q

What is Input of energy

A

energy that goes into a system to make it work

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31
Q

What is Output of energy

A

The energy that comes out of a system

32
Q

Where do you find energy?

A

All around us

33
Q

Sound is a type of what

A

Energy

34
Q

Wind is a type of what?

A

Movement energy

35
Q

Give an example of energy in sound that travels to our ear and we hear sound

A

A Radio

36
Q

Give an example of heat energy

A

A heater making us warm

37
Q

Give an example of light energy

A

Shining a torch to make light

38
Q

Give an example of movement energy

A

Kicking a soccer ball

39
Q

A source of energy

A

Something we get energy from

40
Q

Name 2 sources of energy

A

Food is a source of energy for our bodies

The Sun is a source of energy for plants to make food

41
Q

Give examples for sources of energy

A

Wood
Coal
Crude Oil
Natural Gas

42
Q

what type of energy does a torch give

A

Light energy

43
Q

What type of energy does a heater give

A

Heat energy

44
Q

What type of energy does a radio give

A

Sound energy

45
Q

When energy goes from a source of energy to where it is needed

A

Energy transfer

46
Q

What is Energy Transfer

A

One type of energy is changed into another type

47
Q

What is energy stored in

A

Wood, Food, Coal

48
Q

What is a system

A

It is something that has 2 or more parts that work together to make something happen

49
Q

Example of input energy

A

The paraffin you put in a lamp

50
Q

Example of output energy

A

The light that shines from the lamp

51
Q

What are electrical appliances

A

It’s appliances that use electricity to work

52
Q

If you ride a bicycle…

  1. where does the input of energy come from
  2. What is the output energy
A
  1. from me pedaling the bike

2. Movement forward

53
Q

Give the input and output energy of the following:

  1. Torch to help us see in the light
  2. A radio to listen to music
  3. Person playing a drum
  4. A wood fire to keep us warm and to help us see at night
A

input output

  1. Batteries Light
  2. Electricity Sound
  3. Muscle movement Sound
  4. Wood Heat and Light
54
Q

What is a tuning fork

A

A metal object with 2 long arms. When you tap it, it makes a musical note

55
Q

What is sound wave

A

The way sound travels through the air

56
Q

What is an ear canal

A

A tube that connects the outside of the ear to the inside of the ear

57
Q

What is an eardrum

A

A thin piece of skin inside your ear that vibrates when sound waves hit it

58
Q

What is a nerve

A

A group of fibres that carries messages between your brain and a part of your body

59
Q

How does sound energy move

A

It always moves away in all directions from the part that is vibrating

60
Q

What happens to the air around an object when the object vibrates?

A

The air also vibrates

61
Q

How do we hear

A

Sound waves travel through the air
The ear catches the sound wave
The sound wave travels along the ear canal
The sound wave hits the ear drum and makes it vibrate
Vibrations travel through the bones of the middle ear
Vibrations travel though the inner ear
A nerve takes the message to the brain which makes you hear the soundean

62
Q

Can you sometimes hear and feel vibrations

A

Yes

63
Q

Example of hearing and feeling vibrations

A

When a train goes past you, you hear the sound of the train as well as feel the vibrations on the floor

64
Q

What does volume mean

A

How loud of soft sound is

65
Q

What is pitch

A

How high or low a sound is

66
Q

What is sound a form of?

A

A form of energy

67
Q

Why do you think some sounds are louder than others

A

If you put a lot of energy in the output energy will be more. Like if you blow on a whistle hard the sound that comes out of it will be louder.

68
Q

What happens when we turn up the volume of the TV

A

The speakers get more energy, that makes bigger vibrations and louder sound

69
Q

What type of sound does very fast vibrations make?

A

High sounds

70
Q

What type of sound do slower vibrations make?

A

Low and deep sounds

71
Q

What is the measure of how high or how low sound is?

A

Pitch

72
Q

The shape of an instrument affects what?

A

How high or how low sound is.

73
Q

A string on a guitar stretched tight will make what sound

A

High sound

74
Q

A loose string will make what sound

A

low sound

75
Q

A short tube will make what sound

A

High sound

76
Q

A long tube will make what sound

A

Low sound

NST GRADE 4 (2 decks)

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