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KS3 Science Physics Revision Cards
Fichas del conjunto (30)
- 1What is the order of the planets in our solar system?Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune
- 2What would the weight of a 50kg object be on Earth?500N
- 3What would the mass of a 50kg object be on the moon?50kg
(it doesn't change no matter where you are) - 4How do we have seasons?In our summer, the northern hemisphere is tilted towards the Sun. In our winter, the northern hemisphere is tilted away from the Sun. This is because the Earth is tilted (23.4 degrees from vertical).
- 5What kind of waves are light waves?Light waves are transverse waves, like the ripples in a tank of water. The direction of vibration in the waves is at 90° to the direction that the light travels.
- 6What is the law of reflection?Angle of incidence = angle of reflection
- 7Why might light waves change speed?Light waves change speed when they pass across the boundary between two substances with a different density, such as air and glass.
- 8Finish the sentence: 'At the boundary between two transparent substances...''... the light slows down going into a denser substance, and the ray bends towards the normal.'
or
'... the light speeds up going into a less dense substance, and the ray bends away from the normal.' - 9Diagram of refraction: (click thumbs up if you understand it)
- 10What is dispersion?Splitting white light into a spectrum of colours using a prism.
- 11What are the primary and secondary colours of light?The primary colours are green, red and blue. The secondary colours are cyan, yellow and magenta.
- 12What kind of waves are sound waves?Sound waves are longitudinal. The vibrations are in the same direction as the direction of travel.
- 13Can sound be reflected off surfaces?Yes, sound waves can reflect off surfaces. We hear sound reflections as echoes. Hard, smooth surfaces are particularly good at reflecting sound. This is why empty rooms produce lots of echoes.
Soft, rough surfaces are good at absorbing sound. This is why rooms with carpets and curtains do not usually produce lots of echoes. - 14What is the amplitude?The amplitude is the maximum height of the wave from its resting position – the greater the amplitude, the louder the sound .
- 15What is the wavelength?The wavelength is the distance between the crests (tops) of two waves next to each other (or any other two identical points on waves next to each other).
- 16What is the frequency?The frequency is the number of waves per second – the higher the frequency, the closer together the waves are and the higher the pitch.
- 17Does sound travel in gases quicker than liquids and solids?No, sound travels faster in liquids and solids. This is because the particles of gases are further apart than liquids and solids. Sound waves move more slowly when particles are further apart.
- 18What is the frequency of sound waves measured in?hertz (Hz)
- 19Finish the sentence: 'Sound with a frequency of more than 20,000 Hz is called...''...ultrasound.'
It is too high pitched for humans to hear, but other animals (such as dogs, cats and bats) can hear ultrasound. - 20Complete the sentence: 'Current in a series circuit...''... is always the same.'
- 21Complete the sentence: 'Voltage in a series circuit..''.. is shared out between the bulbs.'
- 22Complete the sentence: 'Current in a parallel circuit...''... is split.'
- 23Complete the sentence: 'Voltage in a parallel circuit..''... is the same at every point.'
- 24State 3 uses of electromagnets.In car motors, in televisions and in automatic doors.
- 25State the energy transformation for a television.Electrical energy into light energy, sound energy and heat energy.
- 26How is energy generated from coal?A coal power station turns the chemical energy in coal into heat energy which is turned into electrical energy.
- 27Name the 10 forms of energy.Magnetic, Kinetic, Heat, Light, Gravitational potential, Chemical, Sound, Electrical, Elastic potential and Nuclear energy.
(Most Kids Hate Learning GCSE Energy Names) - 28What do ammeters measure and where do they go in a circuit?Ammeters measure current and they go into the circuit.
- 29What do voltmeters measure and where do they go in a circuit?Voltmeters measure voltage and they go in parallel to the circuit.
- 30What are the 3 types of weathering? Give examples of them.Physical - onion skin weathering or freeze-thaw weathering
Chemical - acid rain
Biological - animals and plants e.g. burrows and tree roots
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- Descripción
- Revision cards for science (physics) at KS3 level.
- Creado por
- Lilac Potato · may 2015
- Actualizado
- 6 abr 2018
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