Geography Flashcards
What is weather?
The state of the atmosphere at a particular place or time
What is climate
The average weather of a place, usually over 30 years
What is precipitation? (multiple choice)
Water falling from the sky, measured with a rain gauge in mm
How is cloud cover meausured? (multiple choice)
With your eyes in Oktas
How is wind speed measured? (multiple choice)
With an anemometer in mph
How is wind direction measured? (multiple choice)
With a weather vane in compass points
How is air pressure measured? (multiple choice)
With a barometer in millibars
What is relief rainfall
When mountains force the air to rise…
What is frontal rainfall
Caused by warm and cold air masses meeting…
What is convectional rainfall
When warm air rises and cools…
What are sunspots
Little black spots on the sun. The more there are, the more energy the sun gives off and the Earth warms up
How is the Earth’s orbit a natural cause of climate change
When the Earth’s orbit is more circular we are closer to the sun and warm up. When the orbit is more oval, we move further away from the sun and cool down
How are volcanic eruptions a natural cause of climate change?
When super volcanoes erupt, the ash spreads across the atmosphere and blocks out the sun causing a volcanic winter
What are the negative impacts of climate change? (6 marker?)
animal extinctions (e.g. polar bears)
water wars (e.g. Egypt and Ethiopia)
Extreme weather (droughts-Ethiopia, heatwaves-Europe, hurricanes-USA, wildfires-Austrailia)
sea level rise- river barriers cost billions and flooding means people lose their homes meaning the governemnt has to pay for housing and repairing what was ruined in floods meaning they do not have enough money so people are homeless and the death rates increase meaning less poeple pay tax and the governemnt loses more money meaning they cannot spend money on healtchare, transport or education
What is the thinnest layer of the earth
The crust