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Wind Turbine Construction Test

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Wind Turbine Construction Test

Layla’s team is testing a small model wind turbine for a community science fair. Use the information and visuals to investigate forces and motion. Answer every question; explain your thinking where asked.

Test results

The team used the same fan setting and distance for each test. They counted how many full turns the blades made in 10 seconds.

Blade design

What changed?

Turns in 10 seconds

A

Three narrow paper blades

18

B

Three wider paper blades

27

C

Three wide cardboard blades

11

1.Which design spun fastest in the test? Use the results to support your answer.
2.How many more turns did design B make than design A in 10 seconds? Show or explain your calculation.
3.Choose the best explanation for why the wider paper blades in design B may have spun faster than the narrow blades in design A.
  • The wider blades could be pushed by more moving air.
  • The wider blades removed the force of gravity.
  • Paper creates its own energy when it is wide.
  • The fan stopped pushing air at design A.
4.When the moving air pushes the blades, what happens to their motion? Name the force involved and describe the result.
5.Complete the sentence: Wind is moving air, so it has energy. As the blades turn, this energy makes them move, giving them energy.
6.True or false? Design C’s lower result proves that cardboard blades always spin more slowly than paper blades. Explain briefly.
7.Layla wants to find out whether blade width affects speed. Give one thing she should keep the same in each new test and explain why.
8.Suggest one fair way to make the results more reliable, and explain how it would help.
9.The blades wobble because the hub is loose. What should the team do before testing again, and why?
10.A real wind turbine turns a generator. Describe the energy change from moving air to electrical energy in the community.
11.Write one useful success criterion for the team’s model turbine, using something they can observe or measure.

3 printable pages

  • Wind Turbine Construction Test, page 1 of 3: Test results

    Page 1

  • Wind Turbine Construction Test, page 2 of 3: 4. When the moving air pushes the blades, what happens to their motion? Name the force…

    Page 2

  • Wind Turbine Construction Test, page 3 of 3: 11. Write one useful success criterion for the team’s model turbine, using something they…

    Page 3

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