7I Energy Resources
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7I Energy Resources
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3 1000 joules. (9)
4 The kind of energy given out by light bulbs, candles, etc. (5,6)
7 Anything that stores energy that can be converted into heat energy - includes fossil fuels and nuclear fuel. (4)
8 Making electricity by letting falling water (usually from a reservoir) turn turbines and generators. (13,5)
11 The idea that energy can never be created or destroyed, only changed from one form into another. (12,2,6)
13 Coal, oil and natural gas formed from the remains of dead plants and animals. (6,5)
16 Dangerous particles and energy given off by uranium and other radioactive materials. (9)
17 Fossil fuel formed from the remains of dead plants and animals that lived in the sea. (7,3)
19 Making electricity using the moving (kinetic) energy from the tides. (5,5)
20 Make electricity by turning a magnet inside coils of wire. (8)
22 The kind of energy made by anything that is making a noise. (5,6)
23 Fossil fuel formed from the remains of dead plants and animals that lived in the sea. (3)
24 The kind of energy stored in chemicals, food, fuels and cells (batteries). (8)
25 A fuel used in nuclear power stations. (7)
26 Any fuel that comes from plants, animals, or their wastes. (7)
27 The kind of energy in moving things. (7,6)
28 The unit for measuring energy. (5)
29 The kind of energy carried by electricity. (10,6)
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1 Energy stored inside the particles that things are made out of. (7,6)
2 Process that plants use to make their own food. (14)
5 Any energy resource that will run out and we cannot renew our supplies of it (e.g. oil). (3-9,6,8)
6 An energy resource that will never run out (e.g. solar power). (9,6,8)
9 The machine in a power station that is pushed round by water or steam and turns the generator. (7)
10 Flat plates that convert light energy into electrical energy. (5,5)
11 A flow of liquid or gas caused by part of it being heated or cooled more than the rest. (10,7)
12 Making electricity using heat from hot rocks underground. (10,5)
14 Flat plates that use the Sun's energy to heat water. (5,6)
15 A fossil fuel made from the remains of plants. (4)
18 A kind of windmill that generates electricity using energy from the wind. (4,7)
21 Making electricity by using light or heat energy from the Sun. (5,5)
7J Electrical Circuits
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1 Another name for a battery. (4)
4 Measures how much electricity is flowing around a
circuit. (7)
5 A component that makes it difficult for electricity to
flow. (8)
7 The brown wire in a cable or plug. (4,4)
10 Turns electricity on or off, by closing or opening a gap
in a circuit. (6)
11 A piece of wire that melts if too much electricity flows
through it. (4)
14 The smallest part of an element. (4)
17 The unit for current. (3)
18 Tiny particle that flows around a circuit. (8)
20 The flow of electrons around a circuit. (7)
21 A resistor that can be adjusted to change the amount of
resistance it has. (8,8)
23 Electrical signal carried by a nerve cell. (7)
25 A circuit where there is only one loop of wire. (6,7)
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1 A complete loop that electricity flows around. (7)
2 A circuit with two or more wires running next to each
other. (8,7)
3 A material that lets electricity flow through it. (9)
6 A material that does not let electricity flow through it.
(9)
8 A way of saying how difficult it is for electricity to flow
through something. (10)
9 Thin piece of wire inside a light bulb that glows when
electricity is flowing through it. (8)
12 Something in a circuit, like a bulb, switch or motor. (9)
13 Part of a plug that holds the cable, and stops the wires
being pulled out of the pins. (5,4)
15 The blue wire in a cable or plug. (7,4)
16 Carries messages around the body. (5)
19 The green and yellow wire in a cable or plug. (5,4)
22 A way of saying how much energy is transferred by
electricity. (7)
24 A scientific way of thinking about how things happen.
(5)
7K Forces and their Effects
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3 When two forces working in opposite directions are not the same strength. (10,6)
6 The amount of matter that something is made of. (4)
7 The force of attraction between any two objects. (7)
9 The amount of force with which gravity pulls, measured in newtons (N). (6)
10 A force that can affect something from a distance (e.g. gravity). (3-7,5)
11 A force that pushes things up. (8)
13 A unit for measuring mass (g). (4)
15 Not moving. (10)
22 Any substance that will return to its original shape and size after it has been stretched or squashed. (7)
23 The distance a car travels while the brakes are trying to stop it. (7,8)
24 The distance a car travels while the driver is deciding to press the brake pedal. (8,8)
25 A force that tries to slow things down when two things rub against each other. (8)
26 How fast something is moving. Often measured in metres per second (m/s). (5)
27 A force that tries to slow things down that are moving through air. It is a type of friction. (3,10)
28 The volume of water pushed out of the way by an object. (12)
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1 A substance (normally a liquid) used to reduce friction. (9)
2 The amount of mass that 1cm3 of a substance has. Measured in g/cm3. (7)
4 A push or a pull. (5)
5 Piece of equipment containing a spring, used to measure forces. (5,5)
6 A force that attracts objects made out of iron. (9)
8 A unit for measuring mass equal to 1000 g. (8)
12 A force which attracts things with extra electrical charges on them. (6,11)
14 A force that tries to slow things down that are moving through water. It is a type of friction. (5,10)
15 Equal to the thinking distance and the braking distance added together. (8,8)
16 When two forces are the same strength, but working in opposite directions. (8,6)
17 A force that needs to touch an object before it can affect it (e.g. friction). (7,5)
18 Adding a lubricant to something. (11)
19 Another name for a force meter. (6,5)
20 What air and water resistance are both sometimes called. (4)
21 The unit of force. (6)
7L Solar System
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3 Once every 4 years, a period of 366 days. (4,4)
6 All the galaxies and the space between them make up the
Universe. (8)
8 The path that a planet takes around the Sun. (5)
11 When the Moon moves into the shadow of the Earth. (5,7)
12 Millions of stars grouped together. (6)
17 Gives out light. (8)
20 A star with planets and other objects orbiting it. (5,6)
23 Mercury, Venus, Earth and Mars make up these. (5,7)
24 The half of the Earth with the North Pole in it. (8,10)
27 A small lump of rock orbiting around the Sun (8)
28 The phase of the Moon when we cannot see the lit-up side.
(3,4)
29 A shape like a ball. (6)
30 The planet we live on. (5)
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1 When the Moon completely blocks out light from the Sun. (5,7)
2 The two halves of a sphere - the shape you would get if you cut a
solid ball in half. (11)
4 When the Moon only covers part of the Sun. (7,7)
5 The different shapes the Moon seems to have at different times. (6)
7 A pattern of stars. (13)
9 The galaxy that our Solar System is in. (5,3)
10 24 hours, the time it takes the Earth to spin once on its axis. (3)
13 A large lump of rock orbiting around a planet. (4)
14 The phase of the Moon when it looks like a bright, full circle. (4,4)
15 From pole to pole, an imaginary line that the Earth spins around. (4)
16 A huge ball of gas that gives out heat and light energy. (4)
18 What we call Jupiter, Saturn, Uranus, Neptune and Pluto. (5,7)
19 28 days - the time it takes the Moon to orbit around the Earth once.
(5)
21 The distance that light travels in one year. (5,4)
22 Anything that orbits a planet. (9)
25 An imaginary line around the middle of the Earth. (7)
26 The star that the Earth orbits around. (3)