Revise for the P1P2P3 exam
Help!
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| Radiation that is not reflected or transmitted is | absorbed
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| How close you are to a quantitative results true or actual value | accuracy
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| risk calculated from reliable data | actual risk
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| Wire that emits radio waves | aerial
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| Equipment used to measure current | ammeter
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| Unit of measuring current | ampere/amp
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| Device used to increase the amplitude of an electrical signal | amplifier
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| The height of a wave | amplitude
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| Signals that can vary continuously and have any value | analogue
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| The layer of gas that surrounds the earth | atmosphere
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| The currently accepted scientific explanation for the creation of the universe | big bang
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| Average weather in a region over many years. | Climate
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| A rocky lump held together by ice and frozen gases that orbits the Sun | comet
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| Theory that describes extremely slow movement of continents across the Earth | Continental Drift
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| A string on 1s and 0s used to represent an analogue signal | Digital code
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| An event where rocks break to allow tectonic plate movement, causing the ground to shake | earthquake
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| The "family" of different electromagnetic waves of different frequencies and wavelengths | Electromagnetic Spectrum
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| Give out radiation | emit
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| The movement of solids on the Earth's surface by wind, water, ice etc | erosion
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| A collection of thousands of millions of stars | galaxy
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| The most penetrating type of ionising radiation, most energetic part of the electromagnetic spectrum | gamma rays
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| A device used to generate electricity by spinning a magnet near a coil | generator
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| A power station using energy from hot underground rocks | geothermal power station
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| Atmosphere absorbs infra red radiation and radiates it back to the surface warming it | Greenhouse Effect
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| Carbon dioxide, methane and water vapour | Greenhouse gases
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| Electromagnetic waves with a frequency lower than visible light beyond the red end of the spectrum | Infra red
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| Radiation with enough energy to remove electrons, eg UV, X rays and Gamma | Ionising
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| Unit used to measure energy use over time | Kilowatt-hour
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| Distance travelled by light in one year | light year
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| A wave where the particles in a medium vibrate in the same direction as the wave is travelling | longitudinal
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| Thick layer of rock below the Earth's crust | mantle
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| Galaxy where our Sun and Solar System are found | Milky Way
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| Network of cables and transformers that connect power stations to homes | National Grid
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| Thin layer of O3 molecules that absorb UV radiation | Ozone layer
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| Method of measuring the distance of stars based on taking measurements from different places on Earth | Parallax
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| A packet of electromagnetic radiation, the energy of which is proportional to the radiation's frequency | photon
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| A longitudinal seismic wave produced by an earthquake | P Wave
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| when radiation is observed to have a longer wave length than expected | Red shift
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| A resource that can be used to generate electricity without being used up | Renewable Energy source
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| A flow diagram to show what happens to energy in a device | Sankey Diagram
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| Rock formed from layers of sediment | sedimentary rock
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| 300 000km per second | The speed of light
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| A transverse wave produced during an earthquake | S Wave
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| A wave in which the particles move at right angles to the direction of travel | Transverse wave
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| Unit of power | watt
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| The speed at which a wave moves | wave speed
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| The distance from one wave crest to the next | Wavelength
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| Power = | voltage x current
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| UK mains voltage is | 230V
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| Wave speed = | wave length x frequency
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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