Download Question Answer What device uses light from the sun to produce

Question
1. What device uses light from the
sun to produce electricity?
2. What causes wind?
3. What does a transformer do?
4. How is an alternating current (AC)
different from a direct current
(DC)
5. Write down 3 examples of a fossil
fuel
6. What happens when a coil of wire is
rotated inside a magnetic field?
7. What is the unit of electrical
power
8. How is high level radioactive waste
disposed of?
9. Which type of ionising radiation can
penetrate several metres of lead?
10. Write down 3 sources of
background radiation
11. What is red shift?
12. Which metal is present in the
Earth’s core in large amounts?
13. What are solar flares?
14. What is the common name for
Aurora Borealis?
15. Which planet is closest in orbit to
our Sun?
16. Which force keeps the Earth in
orbit around the Sun?
17. What body in space is made of ice
and dust?
18. What do scientists believe
happened 15 billion years ago to
form the universe?
19. What is a measure of the rate at
which energy is used?
20. Why is ionising radiation
considered harmful?
Answer
A photocell
The temperature difference between land surfaces
causes a convection current, this movement of air is
called wind
A transformer increases or decreases the voltage of
an alternating current
DC = the electrons always flow in the same direction,
AC = the electron flow continuously changes
direction.
Gas, Coal and Crude oil
An electrical current is generated
Watt (W)
Stored in concrete and steel drums and buried deep
underground
Gamma waves
Cosmic rays, nuclear power, radioactive gas (radon),
rocks, food, medical equipment (eg: X-rays),
industry, luminous paint.
When a light emitting object is moving away at high
speed the light from it appears to increase in
wavelength, it moves towards the red end of the
visible spectrum.
Iron
A violent explosion from the surface of the Sun
The Northern Lights
Mercury
Centripetal force (the force of gravity pulls the
planet towards the Sun)
A comet
The Big Bang
Power (Power = voltage x current)
Can damage DNA, this causes mutations.
Question
1. What device uses light from
the sun to produce
electricity?
2. What causes wind?
3. What does a transformer do?
4. How is an alternating current
(AC) different from a direct
current (DC)
5. Write down 3 examples of a
fossil fuel
6. What happens when a coil of
wire is rotated inside a
magnetic field?
7. What is the unit of electrical
power
8. How is high level radioactive
waste disposed of?
9. Which type of ionising
radiation can penetrate
several metres of lead?
10. Write down 3 sources of
background radiation
11. What is red shift?
12. Which metal is present in the
Earth’s core in large amounts?
13. What are solar flares?
14. What is the common name for
Aurora Borealis?
15. Which planet is closest in
orbit to our Sun?
16. Which force keeps the Earth
in orbit around the Sun?
17. What body in space is made of
ice and dust?
18. What do scientists believe
happened 15 billion years ago
to form the universe?
19. What is a measure of the rate
at which energy is used?
20. Why is ionising radiation
considered harmful?
Answer
A photocell
A transformer increases or decreases the voltage of an
alternating current
Gas, Coal and Crude oil
Watt (W)
Gamma waves
When a light emitting object is moving away at high speed
the light from it appears to increase in wavelength, it moves
towards the red end of the visible spectrum.
A violent explosion from the surface of the Sun
Mercury
A comet
Power (Power = voltage x current)
The temperature difference between land surfaces causes a
convection current, this movement of air is called wind
DC = the electrons always flow in the same direction, AC =
the electron flow continuously changes direction.
An electrical current is generated
Stored in concrete and steel drums and buried deep
underground
Cosmic rays, nuclear power, radioactive gas (radon), rocks,
food, medical equipment (eg: X-rays), industry, luminous
paint.
Iron
The Northern Lights
Centripetal force (the force of gravity pulls the planet
towards the Sun)
The Big Bang
Can damage DNA, this causes mutations.
There are 20 questions (1 per student). Every student has a full table to complete with every answer. Each
student also receives one answer. All answers must be completed by asking other students for the answer in their
possession.