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Description
Flashcards by Aisha Gillam, updated more than 1 year ago
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Created by Aisha Gillam
about 8 years ago
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| Question | Answer |
| Weather and ℃limate | Unit 1.1 Page 218 |
| What is weather? | weather is the day to day conditions of the atmosphere at a particular place. |
| what is climate? | climate is the long-term weather pattern for a place or region. |
| Weather includes: | all the daily changes in temperature, precipitation, wind, sunshine, humidity and atmospheric pressure. |
| Define humidity: | the amount of moisture in the air. |
| Define atmospheric pressure: | the weight of the air pressing down on the earths surface. |
| what affects atmospheric pressure? | when air is heated by energy of the sun, it rises which causes low pressure. when air cools, it sinks towards the earths surface which forms areas of high pressure. |
| what are low pressure systems associated with? | unsettled weather, while high pressure are usually settle or fine weather |
| what influences seasons? | the angle at which the suns rays reach the earth, the changing seasons and the number of daylight hours. |
| Define aspect: | the direction in which a feature faces. |
| Define altitude: | elevation |
| how does distance from the sea affect rainfall? | winds blowing off warm seas carry a lot of moisture, so places near the coast often receive higher rainfall then those further inland |
| how do mountain barriers affect temperature and rainfall? | orographic rainfall |
| what are prevailing winds? | the direction in which the wind blows most often |
| what is altitude | height above sea level |
| how does seasonal differences affect temperature? | from december to february the southern hemisphere is tilted towards the sun and the northern hemisphere is tilted away from the sun |
| under what conditions does rain develop | when growing cloud droplets become too heavy to remain in the cloud and as a result fall to the earths surface |
| what is precipitation | any form of moisture |
| examples of precipitation: | rain, hail, snow and dew |
| what is coalescence? | merging of the smallest cloud droplets to create larger droplets of water |
| hail: | made up of frozen raindrops |
| snow: | tiny ice crystals |
| dew: | water vapour in the air |
| frontal rainfall: | when a cold and a warm area mass meet |
| the point at which the air masses meat is called a? | front. |
| orographic rainfall: | occurs when a mist body of air is forced to rise by a mountain range. |
| convectional rainfall: | when energy of the suns heats the earths surface and causes water to evaporate |
| condensation level: | dew point |
| climate graphs: | show the average temperature and rainfall experienced at a particular place throughout the year |
| what do meteorologists do | construct and collect data for climate graphs |
| how can climates be described? | very hot, hot, warm, cool, cold or very cold. |
| what does climate influence in australia | lifestyle and land uses |
| why is australia dry? | cold ocean currents, flat continent, high pressure systems and shape of the continent |
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