Created by Mikey Lloyd
about 7 years ago
|
||
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 |
Want to create your own Flashcards for free with GoConqr? Learn more.