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Physics > P1 - 1.1 Energy Stores + Systems > Flashcards

P1 - 1.1 Energy Stores + Systems Flashcards

1
Q

What is the law surrounding energy

A

Energy is never created or destroyed only ever transferred between different forms and objects

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2
Q

True or False:
Energy is never created or destroyed only ever transferred between different forms and objects

A

True

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3
Q

True or False:
Energy is never created but can be destroyed only ever transferred between different forms and objects

A

False

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4
Q

What is it called where we store energy

A

Energy store

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5
Q

What is thermal energy

A

Heat energy trapped in an object or temperature

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6
Q

What is kinetic energy

A

Energy that involves movement or motion

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7
Q

What is gravitational potential energy

A

Where energy is positioned in a gravitational field

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8
Q

What is elastic energy

A

Energy held in an already- stretched string

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9
Q

Where is chemical energy held

A

In chemical bonds

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10
Q

What type of energy occasionally gives you an electric shock when you touch your car

A

Electrostatic energy

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11
Q

What is magnetic energy

A

Energy that holds magnets

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12
Q

What is nuclear energy

A

Energy created from breaking atoms apart

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13
Q

What are the 8 main types of energy stores

A

Thermal
Kinetic
Nuclear
Gravitational potential
Electrostatic
Elastic
Magnetic
Chemical

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14
Q

True or False:
Energy is fixed in an object

A

False energy can be transferred

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15
Q

What term do we use to describe the movement of energy

A

Transferred

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16
Q

What 4 ways can we transfer energy

A

Mechanically
Heating
Electrically
Radiation

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17
Q

What 2 types of radiation can we use to transfer energy

A

Light
Sound

18
Q

What term do we use to describe an object or group of objects

A

System

19
Q

What happens when a system changes

A

Energy is transferred

20
Q

What 2 ways can energy change in a system

A

To a new object
To a new state

21
Q

In an open system how can energy move

A

It can transfer into and out to the outside world

Energy is either lost or gain depending on how it interacts with the outside world

22
Q

What is an open system

A

When energy can be lost or gained by interacting with the outside world

23
Q

In what type of system is energy separated from the outside world

A

Close system

24
Q

In what type of system can energy interact with the outside world

A

Open system

25
Q

What do we mean by the outside world

A

Everything outside the system

26
Q

How does energy change in a closed system

A

It doesnt - no matter or energy can enter or leave a closed system

27
Q

In what type of system is the overall change always zero

A

Closed system

28
Q

Describe how energy is transferred in a kettle from a plug

A

Electrical energy from the plug is transferred to the kettles heating system which turns into thermal energy which transfers to the kettles water thermal energy store

It is transferred electrically

29
Q

What are the 2 types of work done

A

Mechanical
Electrical

30
Q

What is another way of saying energy is transferred

A

Work done

31
Q

How does mechanical work done work

A

Requires a physical force to move an object like kicking a football with your foot

32
Q

What are the 2 energy stores involved when you kick a football

A

Chemical energy store in leg is transferred to the kinetic energy store if the football

33
Q

What type of work done happens when you kick a football with your foot

A

Mechanical

34
Q

What is electrical work done

A

Requires a flowing current

35
Q

How can we think of electrical work done

A

The energy it requires to overcome the resistance in a wire

36
Q

Image a train is about to go over a broken bridge and needs to stop:
What is created when a train breaks

A

Friction

37
Q

What causes friction in this scenario:

Image a train is about to go over a broken bridge and needs to stop

A

The breaks against the wheels and train track

38
Q

Image a train is about to go over a broken bridge and needs to stop:

What part of this scenario causes “does work”

A

The friction of the breaks against the wheels and train track

39
Q

What energy store is in the wheels of this scenario:

Image a train is about to go over a broken bridge and needs to stop

A

Kinetic energy

40
Q

Image a train is about to go over a broken bridge and needs to stop:

What are the energy transfers in this scenario

A

Kinetic energy in the wheels is transferred to thermal energy into the surroundings

41
Q

What type of energy store does a battery have

A

Chemical energy

Physics (106 decks)

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