Beenders, Brian

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Rocks and minerals

  • Beenders, Brian
2002
Examines three different types of rock and how each is formed. A visit to the Grand Canyon illustrates how geologists discern clues to Earth's history by studying the composition of rock layers that have eroded over millions of years.

Machines in motion

Submitted by khenkes on Tue, 07/18/2017 - 08:37

See the principles of physics and power mechanics that allow airplanes to fly, trains to stay on track, and cars to use horsepower.

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