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Car and Ramp Lab . 8 th Grade Science. What is a Photogate ?. A device that can be used to accurately measure periods of time. When an object passes through a light beam, it starts/stops a timer. It’s much more effective then trying to manually keep time. Before Each Trial.
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Car and Ramp Lab 8th Grade Science
What is a Photogate? • A device that can be used to accurately measure periods of time. • When an object passes through a light beam, it starts/stops a timer. • It’s much more effective then trying to manually keep time.
Before Each Trial • Hit “reset” on the Photogate • Make sure both the “A” and “B” lights are on.
Today’s Jobs • A- Ramp (stack the books, measure the height) • B - Car (release and catch) • C - Photogate (reset, push buttons) • D - Manager (reader/recorder)
When you finish collecting data.. • Head back to your seats. • Have your manager get calculators for the group. • Calculate your averages for each height. • Use the average to calculate your average speed. Remember! Speed=Distance/Time