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Unit 7 Review (human impacts)
Terms in this set (24)
refers to short term atmospheric conditions (ex:sunny, cloudy, rainy)
the weather of a specific region averaged over a long period of time
A process that occurs when gases in Earth's atmosphere trap the Sun's heat, making the Earth warmer.
positive of greenhouse effect
It keeps the Earth warm enough to support life.
negative of greenhouse effect
When there are too many greenhouse gases, the Earth can get TOO warm.
connection between human population and climate change
As the human population on Earth is increasing, the average temperature is also increasing (due to human activity.)
A change in the AVERAGE conditions -such as temperature and rainfall- in a region over a long period of time.
TWO things humans are doing that influence climate change
Burning fossil fuels, clearing land/forests for agriculture
what does burning fossil fuels create?
creates carbon dioxide (greenhouse gas)
why is burning fossil fuels a problem?
the gases created from the burning trap the sun's heat and make the Earth warmer.
Melting glaciers or polar ice caps, increasing severity and frequency of natural disasters, unpredictable weather, rising sea levels, rising temperatures
effects on Earth that show that Earth's climate is changing
Measuring growth rings in trees, studying sediment cores from under lakes and oceans, ice cores, satellite measurements of temperature and CO2 (relatively recent history), Land-based measurements of temperature and rainfall (last few hundred years)
ways to measure Earth's past climate
A natural event or force that causes damage to property or loss of life.
Floods, earthquakes, hurricanes, droughts, wildfires, tornadoes, landslides, volcanic eruptions, tsunamis, snowstorms, severe thunderstorms, nor'easters
examples of natural disasters
Floods, hurricanes, droughts, wildfires, tornadoes, landslides, snowstorms, severe thunderstorms, nor'easters
natural disasters that are caused by weather
cause of hurricanes
Warm ocean water, strong winds
cause of earthquakes
Movement of Earth's tectonic plates
cause of wildfires
Dry plants, warm weather, droughts, wind
cause of flooding
Low lying areas, big storms, hurricanes, sea level rise
cause of tsunamis
Underwater earthquake/ moving tectonic plates
predictability of earthquakes
we know WHERE they will happen (along tectonic plate boundaries and faults). We cannot know exactly WHEN they will happen.
Build stronger buildings, set up early warning systems, earthquake plan
predictability of flooding
we can know where it is likely to happen by tracking the weather and know when damaging storms are coming a few days in advance.
Not build in low-lying areas. Build levees, dams and sea walls. Build or protect sand dunes. Put houses on stilts. Slow down climate change (limit sea level rise and slow down the warming of oceans.)
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