Gizmos Student Exploration: Ocean Mapping 100% COMPLETE SOLUTIONS DOWNLOAD TO SCORE OUTSTANDING GRADE A

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Student Exploration: Ocean Mapping

Vocabulary: coordinates, latitude, longitude, sonar

Prior Knowledge Questions (Do these BEFORE using the Gizmo.)

You are exploring a cave. As you enter a room, your light suddenly goes out—dead batteries!

While waiting for your companions to catch up, you try to estimate the size of the room by

clapping your hands.

1. You clap your hands, and instantly you hear an echo of the clap. What does this tell you

about the size of the room? The room is could be either small or big but the room is

full.

2. Suppose when you clap your hands you hear the echo a few seconds later. What can you

say about the size of this room? The room is large and

empty.

Gizmo Warm-up

To measure the depth of the ocean floor, scientists use a

technology called sonar. A pulse of sound waves is emitted by

a transmitter. The waves bounce off the ocean floor and return

to the instrument. The time it takes the signal to return to the

device is recorded and analyzed to determine the depth of the

ocean at that point. The Ocean Mapping Gizmo™ allows you

to create and interpret maps made by this method.

1. On the 3D POINT pane, the blue grid represents the ocean surface. The tan grid represents

a depth of 6 meters (19.7 feet). Each cube has a height of 1 meter. To find the depth of the

ocean, subtract the number of cubes from 6 meters.

A. How many cubes are stacked below the boat? 5


B. How deep is the ocean at this point? _1

2. Select the TABLE tab to check your answer. Were you correct? yes

3. Select the 2D MAP tab. What color represents this depth? light

blue

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