The Human Impact on the Environment Chapter 15.5 -15.11
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| recycling | using natural resources over again
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| What natural resources are conserved by recycling? | trees, minerals, and fossil fuels
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| How does recycling help to conserve fossil fuels? | Recycling using less energy than finding new resources.
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| How does the use of plastic and nylon help to conserve natural resources? | by replacing some iron and aluminum parts with plastic and steel cables with nylon cables
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| Why should water be conserved? | the supply of clean, fresh water on earth is limited
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| What are two ways farmers can help prevent soil erosion? | contour farming (plowing across the slope of the land) and terracing (created on the side of a hill)
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| Why do farmers add fertilizers to soil? | to replace nutrients used by plants
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| strip cropping | grasses are planted between rows of crops to hold water and help stop erosion
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| wildlife | all the plants and animals that live in an area
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| endangered | living things that are moving toward extinction
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| extinct | describes living things that have died out
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| habitat | loss of this is the main threat to wildlife
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| threatened | living things whose numbers are going down
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| refuge | area where living things are protected
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| What is the major cause of air pollution? | the burning of fossil fuels
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| Air pollution occurs when | harmful substances are released into the air
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| Two kinds of pollutants in smoke are ______. | dust and soot
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| Smog is a mixture of _________, _________, and ________. | smoke, fog, and chemicals
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| acid rain | forms when some gases that are released into the atmosphere combine with water
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| When fossil fuels are burned they release ________ into the air. | carbon dioxide gas
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| Some scientists think that an increase in the amount of carbon dioxide in the air may cause _________. | the average air temperature to rise
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| What happens as a result of acid rain? | it causes brick, stone and metal structure
to weather or break apart,
kills fish when it falls into lakes and streams,
and harms trees
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| temperature inversion | occurs when warm air is trapped between two layers of cold air and prevented from leaving an area by mountains
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| Installing _________ on factory smokestacks can reduce the number of particulates released into the air. | filters
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| Air pollutants in burning fossil fuels | carbon dioxide and other gases
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| Air pollutants in smog | smoke and chemicals
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| Air pollutants from factory smokestacks | solid particles (particulates),dust and soot
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| Air pollutants from automobile exhaust | carbon dioxide
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| Air pollutants from burning wood in a fireplace | smoke, dust and soot
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You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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