Section Assessment

Section Summary

I Different types of projections are used for different purposes.

I Geologic maps help Earth scientists study patterns in subsurface geologic formations.

I Maps often contain a map legend that allows the user to determine what the symbols on the map signify.

I The map scale allows the user to determine the ratio between distances on a map and actual distances on the surface of Earth.

Understand Main Ideas

1. iman4TTHB Explain why distortion occurs at different places on different types of projections.

2. Describe how a conic projection is made. Why is this type of projection best suited for mapping small areas?

3. Determine On a Mercator projection, where does most of the distortion occur? Why?

4. Compare and contrast Mercator and gnomonic projections. What are these projections commonly used for?

Think Critically

5. Predict how a geologic map could help a city planner decide where to build a city park.

■Miiiw^ Earth Science

6. Determine the gradient of a slope that starts at an elevation of 55 m and ends 20 km away at an elevation of 15 m.

40 Chapter 2 • Mapping Our World

Self-Check Quiz glencoe.com

40 Chapter 2 • Mapping Our World

Self-Check Quiz glencoe.com

Section 2.3

Objectives

I Compare and contrast different types of remote sensing. I Discuss how satellites and sonar are used to map Earth's surface and its oceans. I Describe the Global Positioning System and how it works.

Review Vocabulary satellite: natural or human-made object that orbits Earth, the Moon, or other celestial body

New Vocabulary remote sensing Landsat satellite TOPEX/Poseidon satellite sonar

Global Positioning System Geographic Information System

Figure 2.12 Notice the differences between the two Landsat photos of New Orleans.

Interpret Which image was taken after Hurricane Katrina in 2005? Explain.

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Responses

  • rayan gray
    How are satellites and sonar used to map earth's surface and it's ocean?
    8 years ago
  • Nasih
    How satellites and sonar are used to map earth's surface and its oceans?
    8 years ago
  • Mikael Aalto
    How are satellites and sonar used to map earths surface and its oceans?
    8 years ago
  • jamie
    Where does most of the distortion occur on a mercator projection?
    8 years ago
  • stefan
    How a geologic map could help a city planner decide where to build a city park.?
    5 years ago
  • beniamino
    How does a geologic map help a city builder decide where to build a park?
    3 years ago
  • kerttu
    How a geologic map could help city planner decide where to build a city park brain.ly?
    1 year ago
  • SALLA
    How could a geological map help a city planner build a city park?
    11 months ago
  • GEORGIA WATT
    Why distortion occurs at different places on different type of projections?
    9 months ago
  • Frans
    How could a geolgic map help decide where a city planner couild build a city prak?
    3 months ago

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