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EXPLORE Measure it Science Skills: Observing, Measuring, Inferring Time Frame: 3 minutes Materials needed: 3 books of equal thickness marble graphing paper 2 rulers of the same size metric tape measure What to do: 1. Position the rulers together on a book with a distance from each other that would fit a marble. The rulers would serve as a ramp for the marbles. 2. Release the marble between the rulers. Measure in centimeters the distance covered by the marble. Take note of the time in seconds as the marble travels. 3. Repeat steps 1 and 2 for trial 2. 4. Put another book on top of the first book. Repeat steps 1 to 3. 5. Put another book on top of the two books. Repeat steps 1 to 3. 6. Record your measurements in the table below. Number of Books Trial 1 Trial 2 Length traveled by the Length traveled by the marble in cm marble in cm 1 book (setup A) 2 books (setup B) 3 books (setup C) Questions: 1. What setup resulted in the shortest distance traveled by the marble? Why do you think the marble traveled the shortest distance with this setup? 2. What setup resulted in the longest distance traveled by the marble? Why do you think the marble traveled the longest distance with this setup? 3. How can measuring distance help us in comparing things in motioan? 4. What is the effect of height on the distance and marble travels from a ramp? 5. What is the speed of the marbles in Trials 1 and 2? 6. Graph your results in a linegraph. Use a graphing paper