| A | B |
|---|
| weather | state of the atmosphere at a particular place and at a specific time |
| climate | average weather conditions over a long period of time |
| atmosphere | surrounds the earth and made up of 4 layers |
| gravity | force that makes things fall to earth |
| ozone | absorbs ultra violet radiation |
| clouds | prevents excessive heating and cooling of the earth |
| troposphere | layer closest tot he earth |
| statosphere | contains ozone gas |
| solar radiation | energy from the sun |
| insolation | another term for sun's energy |
| terrestrial radiation | heat energy from the ground that is radiated back to space |
| temperature | the degree of heat or cold in the atmosphere |
| aspect | refers to the direction of the slope which faces the sun |
| humidity | refers to the amount of water vapour in the air |
| condensation | refers to the process of water vapour changing into water droplets |
| Six's thermometer | measures the maximum and minimum temperatures of the day |
| isotherms | lines found on temperature maps joining all places with the same temperatures |
| hygrometer | measures relative humidity |
| stevenson screen | a white wooden box with louvered sides |
| convectional rainfall | formed when temperatures and humidity are high and common in tropical areas |
| relief rain | also known as orographic rain |
| leeward side | also known as the rainshadow |
| frontal rain | caused by meeting of two air masses of different temperatures & humidity |
| warm front | lighter warm air rises over heavier cold air resulting in light rain over a large area |
| cold front | heavier cold air slips under warm air and forces it to rise resulting in heavy rain over a small area for a short time |
