Term
| How is the Ptolemy model similar to the Copernicus model of the solar system? (1) |
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Definition
| They both have orbits (1) |
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Term
| List the order of the planets (3) |
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Definition
| Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto (3) |
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Term
| 800 J of electricity are produced for every 3200J of energy stored in the coal, calculate the efficiency of this process. (2) |
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Definition
| 800 ÷ 3200 = 0.25 (2) or 25% (2) |
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Term
| A kettle uses 230 Volts and 13 amps. Calculate the power for this kettle. (2) |
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Definition
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Term
| What type of current do solar panels make? (1) |
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Definition
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Term
| How is the Ptolemy model differ to the Copernicus model of the solar system? (2) |
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Definition
| Ptolemy model suggests every in space orbited Earth (1) whereas the Copernicus model suggests every thing orbited the sun (1) |
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Term
| Why is it cheaper to use unmanned spacecrafts instead of manned? (2) |
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Definition
| Don't have to send up oxygen and food (1), also don't have to have the technology to bring it back to earth (1) |
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Term
| What are the risks of using nuclear radiation for hospital staff? (2) |
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Definition
| Can cause mutations to cells and DNA and cause cancer (1) |
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Term
| What two things determine how much it costs to run an appliance? (2) |
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Definition
| The power it uses (1) and how long it is used for (1) |
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Term
| What are the advantages of solar panels? (3) |
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Definition
| Renewable (1) small so can be placed on most things (1) can be used to make electricity or heat water (1) |
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Term
| What are the main stages in the production of electricity? (3) |
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Definition
| Burn a fuel (1), use this to heat up water (1) water turns to steams (1), steam turns a turbine (1) turbine turns a generator (1) generator makes electricity (1) |
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Term
| What are the main stages in the production and distribution of electricity? (2) |
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Definition
| Electricity is made in a power station (1) and distributed to homes by pylons and the national grid (1) |
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Term
| How can the risk of radiation be minimised for hospital staff? (2) |
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Definition
| Limit exposure (1), shield radiation with lead, operate from a distance (1) |
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Term
| What are the two types of current? (2) |
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Definition
| Direct (1) and alternating current (1) |
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Term
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Definition
| The sun heats up the land/sea (1) this causes hot air to rise (1) cold air comes in to replace this gap and this creates wind (1) |
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Term
| What is passive solar heating? (3) |
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Definition
| Sunlight passes through the glass and is absorbed by surfaces in the building (1). It is transferred into heat energy, which is emitted as infrared radiation (1). This is reflected back into the building by the glass (1) |
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Term
| How does a generator work? (3) |
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Definition
| Move a magnet (1) in between a coil of wire (1) and the wire will then generate electricity (1) |
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Term
| What is the national grid? (1) |
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Definition
| The power cables and lines (pylons) that transfers electricity from the PowerStation to our homes (1) |
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Term
| How would you dispose of high level radioactive waste? |
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Definition
| Encase it in glass, steel (lead) lined containers and bury it deep underground |
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Term
| What is beta radiation stopped by? (1) |
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Definition
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Term
| What are the arguments for wind turbines? (2) |
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Definition
| Renewable energy (1) can be used on land and at sea (1) |
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Term
| What type of current does a generator make? (1) |
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Definition
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Term
| How would you dispose of low level radioactive waste? |
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Definition
| Can be buried in landfill with the rest our the waste |
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Term
| What are the three types of radiation? (2) |
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Definition
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Term
| What is gamma radiation stopped by? (1) |
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Definition
| Thick lead will stop most of the Gamma radiation but not all of it |
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Term
| What are the arguments against wind turbines? (2) |
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Definition
| They don't look nice (1), Noisy (1), Need a lot of them to make a lot of electricity (1) |
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Term
| What fuels are available for use in a power station? (3) |
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Definition
| Nuclear (uranium) (1), wood (1), biomass (1), fossil fuels (1) |
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Term
| What is alpha radiation stopped by? (1) |
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Definition
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Term
| Which type of radiation causes the most ionisation? (1) |
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Definition
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Term
| What medical uses are there for radiation? (2) |
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Definition
| Gamma can be used to treat cancer (1), can be used as a tracer in the body to see blood flow (1) |
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Term
| Explain the theory of how a meteorite caused the dinosaurs to go extinct. (3) |
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Definition
| As it his the ground it caused a large dust could (1) this blocked out all the sunlight (1). Plants could not photosynthesis (1) so plants died therefore the herbivore dinosaurs dies as they have nothing to eat (1) carnivores then died as they had no dinosaurs to eat |
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Term
| Explain the main theory behind the formation of earth’s moon. (3) |
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Definition
| Two planets (earth and another one) collided (1), one planet got broken up into lots of pieced (1). These pieces orbited earth and eventually came together to form the moon (1) |
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Term
| What happens to a small sized star after it has ran out of hydrogen? (2) |
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Definition
| It will expand and become a red giant (1) it will then shrink and forms a white dwarf |
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Term
| What two things are needed to make a dynamo, generator? (2) |
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Definition
| Magnet (1) and a coil of wire (1) |
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Term
| What are comets made of? (1) |
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Definition
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Term
| What shape orbit does a comet have? |
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Definition
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Term
| What evidence is there for the big bang? (2) |
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Definition
| Galaxies are moving away from us (1) the furthest away galaxies are moving the fastest (1), background radiation in pace (1) |
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Term
| What happens to a large sized star after it has ran out of hydrogen? (2) |
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Definition
| It will expand and become a supernova (1) it will then shrink and forms a black dwarf (1) and then a black hole (1) |
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Term
| How can you make a dynamo, generator, more powerful? (2) |
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Definition
| Move the magnet/coils faster (1), stronger magnet (1), or more coils (1) |
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Term
| What are asteroids made of? |
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Definition
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Term
| What happens to comets when they come close a star? (2) |
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Definition
| they speed up due to the pull of gravity from the sun(1). The ice also vaporises and gives the comet a tail (1) |
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Term
| Before a star is born it is made up of gas and dust, this is called? (1) |
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Definition
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Term
| What is the big bang? (3) |
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Definition
| All matter was in one single point and it then exploded and expanded (1) particles such as electrons, neutrons and protons stared to form (1) these they joined to together and started to make the first elements, hydrogen and helium (1) |
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Term
| Not all energy from a fuel is transferred into electricity, some is lost, how? (1) |
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Definition
| lost as heat through the machinery and into the atmosphere (1) |
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