9256802
Description
Flashcards by Mikey Lloyd, updated more than 1 year ago
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Created by Mikey Lloyd
almost 7 years ago
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| Question | Answer |
| Absorb | When a ray of light is taken in when it strikes a surface |
| Amplitude | The height of a wave |
| Axis | The imaginary line through the North and South Poles, about which the Earth turns |
| Boiling Point | The temperature at which a substance turns from a liquid to a gas or from a gas to a liquid |
| Celsius Scale | A scale of temperature |
| Convection Current | When heat energy is carried by a moving liquid or gas |
| Crater | Dent on an object in space caused by rocks in space. |
| Density | Density= mass divided by volume |
| Frequency | The number of waves or vibrations per second |
| Heat Energy (Heat) | Energy spreading out from an object which is hotter than its surroundings |
| Hemisphere | Half of the Earth's sphere |
| Hertz | The unit of frequency; 1Hz = 1 vibration per second |
| Metal | A chemical that is shiny, malleable and a conductor; they often have high melting and boiling points and are sonorous |
| Normal | The line at right angles to a surface at the point where a ray of light strikes the surface |
| Oscillate | To move back and forth |
| Oscilloscope | An electronic instrument used to show sound waves on a screen |
| Penumbra | A region of partial shadow in an eclipse |
| Phases | A stage in the changing appearance of the Moon, as seen from Earth |
| Pitch | How high or low a note is |
| Planet | A large, solid object in orbit around the Sun or another star |
| Pressure | A variable measured in Pascal (Pa) |
| Prism | A glass block with a regular face |
| Radiation | Energy spreading out from its source |
| Reflect | When a ray of light bounces off a surface |
| Reflected | Describes a ray of light which has bounced off a surface |
| Refraction | The bending of light when it travels from one medium to another (from a solid to a gas or vice versa) |
| Rock Planet | A small planet made of rocky material, e.g. the four planets closest to the Sun |
| Scatter | When a ray of light reflects in many directions |
| Season | A division of the year (Spring, Summer, Autumn, Winter) |
| Signal Generator | An electronic device used with a loudspeaker to produce sounds of different frequencies |
| Solar Eclipse | When the Moon blocks the Sun's rays so that part of the Earth is in darkness |
| Lunar Eclipse | When the Earth blocks the Sun's rays so that the Moon is in darkness |
| Image | A picture of something, formed by light |
| Incident | Describes a ray of light falling on a surface |
| Infra-red Radiation | Invisible rays of heat energy spreading out from an object that is hotter than its surroundings |
| Lens | A piece of glass shaped so that it refracts rays of light so that they come together |
| Sound Insulation | Material used to absorb sound |
| Sound Wave | How we picture sound travelling through a material |
| Sound-level Meter | A meter used to measure the loudness of sound |
| Spectrum | All the colours of light, spread out in order (red, orange, yellow, green, blue, indigo, violet) |
| Speed of Light | The speed at which light travels in empty space; about 300,000km/s |
| Star | A glowing mass of hot gas; e.g. the Sun |
| Supernova | An explosion of a massive star towards the end of its life |
| Temperature | A measure of how hot something is |
| Thermal Conductor | A material which lets heat pass through it easily |
| Thermal Insulator | A material which lets heat pass through it but only very slowly |
| Thermometer | An instrument for measuring temeperature |
| Transmit | When a ray of light passes through a material |
| Umbra | A region of full shadow in an eclipse |
| Upthrust | The upward force on an object in liquid or gas |
| Vibrate | To move back and forth |
| Decibel | A unit used to measure the loudness of sound |
| Energy | A variable, measured in |
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