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Blue Cards Flashcards

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1
Q

When warm air rises then cools and sinks

A

Convection

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2
Q

What a u value?

A

A measure of how good an insulator a material is

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3
Q

Specific heat capacity

A

E= m X c X ø

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4
Q

Power is measured in

A

Watts

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5
Q

Payback time is

A

The time it takes to get back the cost of installing an energy efficient device from the money saved on heating bills

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6
Q

energy =

A

Power x time

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7
Q

A method of generating electricity

A

Nuclear power

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8
Q

This device can step up the voltage

A

Transformer

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9
Q

An example of a transverse wave

A

Light

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10
Q

Rarefaction

A

The part of a longitudinal wave which has been stretched further apart

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11
Q

The distance between the top of two waves

A

Wave length

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12
Q

How many waves there are per second

A

Frequency

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13
Q

When a wave bounces off a surface

A

Reflection

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14
Q

What is refraction

A

When a wave speeds up or slows down depending on the medium in which it is traveling in

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15
Q

The Doppler effect is…

A

The change in the observed wavelength and frequency of a wave when the wave source is moving

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16
Q

Some stars appear red because…

A

The Galaxy is expanding- red shift

17
Q

What is the name for the transfer of thermal energy in a metal?

A

Conduction

18
Q

What is the poem to help remember the order of types of radiation

A 
R
M
I
V
U
E - X
19
Q

What does the r stand for in the types of radiation poem?

A

Randy

Radio waves

20
Q

What does the m stand for in the type of radiations poem?

A

Men

Microwaves

21
Q

What does the I stand for in the type of radiations poem?

A

Ingest

Infrared

22
Q

What does the V stand for in the type of radiations poem?

A

Viagra

Visible light

23
Q

What does the U stand for in the type of radiations poem?

A

Until

Ultra-violet

24
Q

What does the E- X stand for in the type of radiations poem?

A

Explosions

X-rays

Physics (3 decks)

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