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GCSE Physics > P1 - Energy Stores and Transfers > Flashcards

P1 - Energy Stores and Transfers Flashcards

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1
Q

What does friction cause energy to do?

A

Be transferred into a thermal energy store

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2
Q

What is the equation for power?

A

P=E/t

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3
Q

What does t stand for?

A

Time

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4
Q

What is dissipated energy?

A

Wasted energy

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5
Q

What is the equation for efficiency?

A

Efficiency=Useful output/ total input

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6
Q

Can energy be created or destroyed?

A

No

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7
Q

How many stores of energy are there?

A

7

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8
Q

What is kinetic energy?

A

The energy stored in a moving object, all moving objects store kinetic energy

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9
Q

What is thermal energy?

A

The energy stored in a substance or an object because of it’s temperature

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10
Q

What is power measured in?

A

W- Watts

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11
Q

What is the gravitational field strength of Earth?

A

9.8N/kg

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12
Q

What is the equation of weight?

A

W=mg

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13
Q

What is mechanical working?

A

An energy transfer that involves a force, surfaces being in contact and particles moving

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14
Q

What 2 qualities of an object causes it to store more gravitational potential energy?

A

More mass and higher in the air

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15
Q

What is energy and work done measured in?

A

J - joules

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16
Q

How do you calculate work done?

A

W=Fs

17
Q

What is heating by particles?

A

Heat moving from one place to another via conduction and convection

18
Q

How do you calculate kinetic energy?

A

E=1/2 x m x v squared

19
Q

How do you calculate velocity?

A

distance/time or square root of E/0.5

20
Q

What is elastic potential energy?

A

The energy stored in a stringy object when you stretch or squash it

21
Q

What is force measured in?

A

N- Newtons

22
Q

What is electrical working?

A

An energy transfer through wires (current).

23
Q

What do you measure gravitational field strength in?

A

N/kg

24
Q

How do you calculate weight?

A

W=mg

25
Q

What is gravitational potential energy?

A

The energy stored in an object because of it’s position above the ground

26
Q

How do you calculate gravitational potential energy?

A

E=mgh

27
Q

What does h stand for?

A

Height

28
Q

What is height or distance measured in and must be converted to?

A

Metres (m)

29
Q

What does s stand for?

A

Distance

30
Q

What is chemical energy?

A

The energy stored in fuel such as muscles, a battery and petrol

31
Q

What is heating by radiation?

A

An energy transfer that needs heat radiation and any EM (electromagnetic) / light waves

32
Q

What type of energy transfer is sound waves?

A

Mechanical working

33
Q

How do you calculate elastic potential energy?

A

E = 1/2 x k x e squared

34
Q

What does e stand for

A

Extension (stretched or squashed)

35
Q

What is spring constant measured in?

A

N/m

36
Q

What does k stand for?

A

Spring constant

37
Q

What is extension measured in?

A

Metres (m)

GCSE Physics (3 decks)

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