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Environ 15.5-15.11
The Human Impact on the Environment Chapter 15.5 -15.11
| Question | Answer |
|---|---|
| recycling | using natural resources over again |
| What natural resources are conserved by recycling? | trees, minerals, and fossil fuels |
| How does recycling help to conserve fossil fuels? | Recycling using less energy than finding new resources. |
| 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 |
| Why should water be conserved? | the supply of clean, fresh water on earth is limited |
| 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) |
| Why do farmers add fertilizers to soil? | to replace nutrients used by plants |
| strip cropping | grasses are planted between rows of crops to hold water and help stop erosion |
| wildlife | all the plants and animals that live in an area |
| endangered | living things that are moving toward extinction |
| extinct | describes living things that have died out |
| habitat | loss of this is the main threat to wildlife |
| threatened | living things whose numbers are going down |
| refuge | area where living things are protected |
| What is the major cause of air pollution? | the burning of fossil fuels |
| Air pollution occurs when | harmful substances are released into the air |
| Two kinds of pollutants in smoke are ______. | dust and soot |
| Smog is a mixture of _________, _________, and ________. | smoke, fog, and chemicals |
| acid rain | forms when some gases that are released into the atmosphere combine with water |
| When fossil fuels are burned they release ________ into the air. | carbon dioxide gas |
| Some scientists think that an increase in the amount of carbon dioxide in the air may cause _________. | the average air temperature to rise |
| 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 |
| temperature inversion | occurs when warm air is trapped between two layers of cold air and prevented from leaving an area by mountains |
| Installing _________ on factory smokestacks can reduce the number of particulates released into the air. | filters |
| Air pollutants in burning fossil fuels | carbon dioxide and other gases |
| Air pollutants in smog | smoke and chemicals |
| Air pollutants from factory smokestacks | solid particles (particulates),dust and soot |
| Air pollutants from automobile exhaust | carbon dioxide |
| Air pollutants from burning wood in a fireplace | smoke, dust and soot |
Created by:
ldorso
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