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TIA Std. 4 Science
TIA Standard 4 Science Units 1,2,3
| Term | Definition |
|---|---|
| Cumulus | heaped clouds |
| Stratus | layered clouds |
| Cirrus | lock of hair clouds |
| Pressure | the force per unit areas that the atmosphere exerts on everything in it |
| Humidity | a measure of the amount of water vapor in the air |
| Depression | a region of low atmospheric pressure |
| Temperature | a measure of how hot or cold something is |
| Anamometer | an instrument to record wind speed |
| Hygrometer | an instrument that measures humidity |
| Barometer | an instrument that measures air pressure |
| Thermometer | an instrument that shows temperature |
| Tropical | warm throughout the year |
| Polar | very cold throughout the year |
| Continental | hot summers, cold winters |
| Cool Temperate | changeable, generally cool with rain any time of year |
| Carbon Dioxide | a gas present in small quantities in air |
| Conserve | to save or take care of something |
| Greenhouse Effect | the way in which gases, such as carbon dioxide, trap heat in the atmosphere |
| Global Warming | the increase in average temperature of the Earth caused by increased amounts of greenhouse gases in the atmosphere |
| Ozone | a special kind of oxygen with three atoms in each molecule instead of two |
| Ozone Layer | a layer of gas high in the atmosphere that blocks UV radiation from the Sun |
| UV | invisible rays from the Sun that can damage the skin |
| CFCs | manmade chemicals that were once used in aerosols and refrigerators |
| Gravity | the force that pulls things to the ground |
| Magnetic Force | the force that attracts a steel ball to a magnet |
| Friction | the force that warms your hands when you rub them |
| Elastic Force | the force you feel when you stretch elastic |
| Lever | increases the strength of a force or the distance of movement |
| Wheel | makes the transportation of loads easier |
| Single Pulley | changes the direction of a force |
| Aquaplane | to skid, or slide on the surface of water |
| Tread | the grooves in a tire or on the sole of a shoe |
| Skidding | when a vehicle's wheels lose grip and spin or slide on the road |
| Wear | damage caused by friction |
| Lubricant | a substance such as oil that reduces the friction between two surfaces |
| Temperature | a measure of how hot or cold something is |
| Heat Source | something that gives out heat energy |
| React | when substances combine to make a new substance or substances |
| Expand | to increase in size |
| Change State | to change between two states of matter-solid, liquid, or gas |
| Solid | rigid; has shape and strength |
| Liquid | pours and flows; takes the shape of the container |
| Gas | easily compressed; expands to fill the container |
| Conduction | when heat travels through a solid |
| Convection | how heat travels upwards through a liquid |
| Radiation | how heat moves through gas from warm areas to cold areas |
| Conductors | transfers heat easily (metal is a great conductor) |
| Insulators | slows down or prevents heat transfer (wood, rubber, plastic, cloth) |
Created by:
texcgrimes
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