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