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LessonLesson ReviewVocabularyDraw a line to connect the following terms to their definitions.

1 remote sensing

2 global positioning system

3 geographic information system

A a system of satellites from which position on Earth can be determined

B a computer system to collect, display, and analyze data about Earth’s surface

C gathering and analyzing information about an object from a distance

Key Concepts4 Provide Give at least three examples of the

types of information that can be shown in remote-sensing images.

5 Infer A scientist makes a map using GIS. One layer is an aerial photograph of farmland. Other layers show water-level changes and how the crop cover has changed over time. What might the scientist be studying?

6 Describe How can remote-sensing images be used to show changes in land features over time?

Critical ThinkingUse this image to answer the following questions.

7 Interpret Identify at least one erosional land feature shown in this satellite image.

8 Interpret Identify at least one additional land feature shown in this satellite image.

9 Synthesize Imagine you were collecting vegetation samples in an area to study their distribution over that area. Describe how remote-sensing images, maps, GPS, and GIS could be helpful.

Lesson Review Answers 1. C

2. A

3. B

4. Sample answers: variations in sur-face temperature; the shape of Earth’s surface beneath vegetative cover; entire river systems or moun-tain chains.

5. Student answers should give a plau-sible use of these data. Sample answer: The scientist might be comparing the amount of water used to grow crops in different areas.

6. By comparing images of Earth’s surface of the same location over time.

7. Sample answer: valleys

8. Sample answer: mountains, ridges, hills (some with vegetation, some without)

9. Sample answer: You could use remote-sensing images to view the general vegetation cover, or view multiple images taken over time to see if it has changed. You could use GIS with an image and a topographic map to see how elevation and vege-tation, or other features, are related. You could use GPS as you collect samples so you know the locations of each type.

411Lesson 5 Images of Earth’s Surface

5

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114114 Unit 7 Processes that Shape Earth