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WJEC Physics P1 Revision Flashcards | StudBud
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WJEC Physics P1 Revision
WJEC Physics P1 Revision
20 terms
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Foundation Tier Quiz
Flashcards
20 cards
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Practice quiz
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Questions
20
Answers
1
What is the biggest contributor to background radiation?
radon gas
nuclear waste
food and drink
cosmic rays
2
How much do artificial sources contribute to our total dose of background radiation?
25%
10%
50%
15%
3
Which one of the arrows shows the amplitude of a wave?
C
B
D
A
4
How can you calculate power?
Energy ÷ time
Energy × time × distance
Energy × current
Energy × time
5
Which of the following electromagnetic waves has the most energy?
ultraviolet
gamma
visible
radio
6
What are the steps to produce electricity in a fossil fuel power station?
Boiler, Turbine, Generator
Boiler, Generator, Turbine
Turbine, Generator, Boiler
Boiler, National Grid, Turbine
7
What does a step up transformer do?
Lowers the voltage and increases the current
Increases voltage and decreases the power
Increases the current and voltage
Increases voltage and decreases current
8
Choose the best description. Matt black surfaces are...
Good reflectors of radiation
Good emitters of radiation
Good absorbers and emitters of radiation
Good absorbers of radiation
9
Why does a step down transformer reduce the voltage?
all of the above
to save energy
to make electricity cheaper
to make electricity safe to use at home
10
Which of the following is a unit of energy?
W
N
kWh
h
11
If 200J of light energy comes out of a light bulb and 500J went in, the efficiency is
35%
30%
40%
50%
12
Which of the following electromagnetic waves is given out by a TV remote control?
x-ray
infrared
microwave
radio
13
Fill in the blank: Microwaves travel through a vacuum at _________________ radio waves.
a much faster speed than
the same speed as
a slower speed than
a faster speed than
14
How far can beta radiation travel
in air?
up to 80cm
up to 2m
up to 5cm
up to 5m
15
The further away a galaxy is
the larger it is
the faster it is moving away from us
the faster it is moving towards us
the slower it is moving away from us
16
Which one of the arrows shows the wavelength of a wave?
D÷4
C÷2
D×2
2×C
17
Which type of electromagnetic wave is used to send a signal to a satellite?
gamma
microwave
radio
ultraviolet
18
Allowing the surface of solar panels to become very dirty will ________ the pay-back time.
lower
decrease
not affect
increase
19
Why does a step up transformer increase the voltage and decrease the current?
to increase the speed that the electricity is transported
to reduce heat loss in the cables
to reduce power loss in the cables
to reduce cost
20
If a star is moving towards us, its absorption lines compared to the Sun will be
blue shifted
green shifted
red shifted
nothing is observed
