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Gcse Phy Spec PAPER 1 > Energy > Flashcards

Energy Flashcards

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1
Q

What is a system

A

An object or group of objects

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2
Q

What can the kinetic energy of a moving object be calculated by What equation

A

Kinetic energy=
0.5 x mass (speed)2

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3
Q

What is kinetic energy written as

A

Ek

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4
Q

What is kinetic energy measure in

A

Joules (J)

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5
Q

What is mass written as

A

M

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6
Q

What is mass measure in

A

Kilograms (kg)

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7
Q

What is speed written as

A

V

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8
Q

What is speed measure in

A

Meters per sec (M/s)

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9
Q

What is elastic potential energy written as

A

Ee

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10
Q

What is elastic potential energy measure in

A

Joules (J)

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11
Q

What is spring constant written in

A

K

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12
Q

What is spring constant measure in

A

Newtons per metre (n/m)

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13
Q

What is extention written as

A

E

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14
Q

What is extention measure as

A

Metres (m)

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15
Q

What is the gravitational potential energy equation

A

G.p.e =
mass x gravitational field strength x height

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16
Q

What is gravitational potential energy written as

A

Ep

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17
Q

What is gravitational potential energy measured In

A

Joules (J)

18
Q

What do gravitational field strength written as

A

G

19
Q

What is gravitational field strength measured in

A

Newtons per kilogram (n/kg)

20
Q

What is height written as

A

H

21
Q

What is thermal energy weritten as

A

^E

22
Q

What thermal energy measure in

A

Joules (J)

23
Q

What is specific heat capacity written as

A

C

24
Q

What is specific heat capacity measure in

A

Joules per kilogram per degree celcius (j/kg)•C

25
Q

What is ten specific heat capacity of a substance

A

The amount of energy required to raise the temp of one kilogram of the substance by one degree celcius

26
Q

What is power defined as

A

The rate at which energy is transferred or the rate at which work is done

27
Q

What is power written as

A

P

28
Q

What is power measured in

A

Watts (w)

29
Q

What is energy transferred written as

A

E

30
Q

What’s is energy transferred measured in

A

Joules (J)

31
Q

What is time written as

A

T

32
Q

What is time measured in

A

Seconds s

33
Q

What is work done written as

A

W

34
Q

What is work done measured in

A

Joules (J)

35
Q

What does and energy transfer of one joule also equal to

A

1 power of watt

36
Q

What can happen to energy and what can’t

A

It can be transferred usefully , stored or dissipated but it can’t be created nor distriyed

37
Q

The higher the thermal conductivity of a material the higher the what

A

The higher the rate of energy transfer by conduction across the material

38
Q

What are the main energy resources available for use on earth

A

Fossil fuels, nuclear fuel ,biofuel ,wind ,hydro-electricity, geothermal, tides, sun and water waves

39
Q

Define a renewable resource

A

A reasource that can be replenished as it’s being used

40
Q

What are the used of energy

A

Transport ,electricity generation and heating

Gcse Phy Spec PAPER 1 (4 decks)

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