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Science Unit 5
Predicting and Limiting Impact on Earth's Surface
| Term | Definition |
|---|---|
| Terracing | When people build flat steps, like stairs, into the sides of hills or mountains. This helps make flat areas for farming and keeps soil from washing away when it rains. |
| Contour Plowing | A way of plowing fields along the natural curves or lines of a hill, instead of straight up and down. This helps stop rainwater from washing soil away and keeps the land healthy for farming. |
| Dam | A barrier is constructed to hold back water and raise its level. Dams form reservoirs which can be used to generate electricity or as a water supply. Natural - beavers building a dam. |
| Jetties | Walls made of wood, stone, or concrete that are built along rivers or at the entrance of harbors. They help protect the land from waves and keep the water deep for boats to pass through. |
| Vegetation Replacement | The process of re-planting vegetation to restore or replace lost habitat. |
| Levee | An embankment built to prevent the overflow of a river. |
| Seismograph | Instruments used to record the motion of the ground during an earthquake. |
| Storm Drains | A drain built to carry away excess water in times of heavy rain. |
| GIS Maps | Geographic Information System maps are a computer-based tool that displays and analyzes information about the Earth’s surface. |
| Infrared Satellite Imagery (ISI and IR) | Captures the temperature of the earth and detects movement of clouds to help predict weather and natural disasters. |
Created by:
Jencoffield
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