In "It Came From Space" (p. 14), you read about what scientists are learning from meteorites, or asteroids that fall to Earth. Sometimes when a large meteorite hits the ground, the impact creates a crater. The chart below lists several large craters found in the United States. Complete the chart by converting the diameters from miles to kilometers. We did the first one for you. (Hint: 1 mile = 1.61 kilometers.) Then use the information to make a bar graph and answer the questions that follow.
Create a bar graph to show the diameter of each crater in kilometers. Be sure to give your graph a descriptive title and label the x- and y-axes.
1. In the list above, which state has the largest crater? The smallest crater?
2. Which crater has a diameter of 3.8 kilometers? Where is this crater located?
3. Where is the crater that is twice the diameter of Glover Bluff located?
4. Measuring 90 km (55.9 mi) in diameter, the Chesapeake Bay crater in Virginia is the largest crater in the United States, but none of it is exposed--it's buried under 300 meters (1,000 feet) of sand, silt, and clay. Many other craters on Earth are also not visible to the naked eye. Why do you think that is?
A Selection of Craters in the United States Diameter Diameter Crater Name Location (miles) (kilorrmeters) Ames Oklahoma 10 16.1 Barringer Arizona 0.73 Beaverhead Montana 37.28 Crooked Creek Missouri 4.35 Flynn Creek Tennessee 2.36 Glover Bluff Wisconsin 4.97 Kentland Indiana 8.08 Manson Iowa 21.75 Marquez Texas 7.89 Serpent Mound Ohio 4.97 Upheaval Dome Utah 6.21 SOURCE: PLANETARY AND SPACE SCIENCE CENTRE, UNIVERSITY OF NEW BRUNSWICK
A Selection of Craters in the United States
Ames 16.1 Barringer 1.18 Beaverhead 60 Crooked Creek 7 Flynn Creek 8 Glover Bluff 13 Kentland 35 Manson 12.7 Serpent Mound 8 Upheaval Dome 10 Location Analyze It 1. Montana has the largest crater and Arizona has the smallest crater. 2. Flynn Creek crater in Tennessee has a diameter of 3.8 kilometers. 3. Ames crater in Oklahoma has twice the diameter of Glover Bluff crater. 4. Answers will vary but should include: Some craters are not visible because they are covered by water and soil like the Chesapeake Bay crater. Others may be covered with ice or may have eroded away. Note: Table made from bar graph.
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|Title Annotation:||CRITICAL-THINKING SKILLS; craters|
|Date:||Mar 5, 2011|
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