Integrated Coordinated Science for the 21st Century
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Answers
Stretching Exercises
- This is a difficult experiment. The speed of sound in air is about 340 m/s. If the student and partner stand at either end of a football field, sound takes only 0.3 s to travel the distance between them.
- The ozone hole over the South Pole allows substantial ultraviolet radiation to reach the surface of the Earth at high southern latitudes. Encourage students to research the measures taken in Australia to protect people from exposure to sunlight.
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