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Energy Transfer Investigation

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Energy Transfer Investigation

A marble rolls down a ramp and across a level floor. Use the setup and results below to investigate how ramp height affects the distance travelled. Read the data carefully; no equipment is needed to answer the questions.

Plan and predict

In a fair test, change only the ramp height. Keep the marble, ramp surface, release point and floor surface the same. Release the marble without pushing it.

1.Write an investigable question about how the height of the ramp affects the distance the marble travels along the floor.
2.Before release, the marble is held at the top of the ramp. Which type of energy store is greatest at this point?
  • Kinetic energy
  • Energy stored because of the marble's height
  • Sound energy
  • Electrical energy
3.Give one variable that should be kept the same in this test, and explain briefly why it should be controlled.

Results from three trials

A student measured the distance from the foot of the ramp to where the marble stopped. Distances are in centimetres.

Ramp height (cm)

Trial 1 (cm)

Trial 2 (cm)

Trial 3 (cm)

10

42

44

43

20

68

70

69

30

91

94

92

4.Calculate the mean distance for the 20 cm ramp height using all three trials. Show your calculation.
5.Compare the results for ramp heights of 10 cm and 30 cm. What happened to the mean travel distance as the ramp height increased?
6.True or false: the marble gains kinetic energy as it rolls down the ramp because energy stored due to its height is transferred to its movement.
TrueFalse
7.When the marble eventually stops, its energy has not disappeared. Name two ways energy is transferred to the surroundings as it rolls and slows.
8.A student releases the marble with a small push in one trial but not the others. Explain why this makes the test less fair.
9.Use the results as evidence to write a conclusion about the relationship between ramp height and the marble's travel distance. Include one mean distance from the table.

2 printable pages

  • Energy Transfer Investigation, page 1 of 2: Plan and predict, Results from three trials

    Page 1

  • Energy Transfer Investigation, page 2 of 2: 20 68 70 69

    Page 2

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