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Investigating friction variables
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Created on May 31, 2023
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Transcript
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Investigating friction variables
©2023 Kapow Primary
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©2022 Kapow Primary
Identifying variables
Our experiment
Controlling variables
Identifying variables
What are variables?
Investigation question
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©2022 Kapow Primary
Contents
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©2022 Kapow Primary
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©2023 Kapow Primary
www.kapowprimary.com
©2022 Kapow Primary
Investigation question
Does the roughness of a surface affect the amount of friction produced?
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When planning a comparative test, we need to consider the things we are going to change, measure and keep the same because these things can all affect our investigation. These things are called variables.
©2023 Kapow Primary
www.kapowprimary.com
©2022 Kapow Primary
What are variables?
Click to reveal the definition of a variable.
A variable is something that can change and cause an effect.
What variable do we need to change?
What variable could we measure?
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Does the roughness of a surface affect the amount of friction produced?
©2023 Kapow Primary
www.kapowprimary.com
©2022 Kapow Primary
Identifying variables
Click the post it notes to reveal the variables.
The roughness of the surface.
The distance the object travels.
- Place the first material on the ramp.
- Place the toy car at the top of the ramp.
- Release the car.
- Measure how far the car travels.
- Record the results in the table.
- Repeat the test for each material and record the results.
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©2023 Kapow Primary
www.kapowprimary.com
©2022 Kapow Primary
Our experiment
What variable do we need to change?
What variable could we measure?
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Does the material on the ramp affect the distance the car travels?
©2023 Kapow Primary
www.kapowprimary.com
©2022 Kapow Primary
Identifying variables
Click the post it notes to reveal the variables.
The material.
The distance the car travels.
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©2023 Kapow Primary
www.kapowprimary.com
©2022 Kapow Primary
Controlling variables
Click to reveal if the variable needs to be controlled.
No. This variable cannot be controlled.
Yes. This variable should be kept the same as it will affect how far the car travels.
Yes. This variable should be kept the same as it will affect how far the car travels.
No. This variable does not need to be kept the same as it does not have an effect on the distance the car travels.
Yes. This variable should be kept the same as it will affect how far the car travels.
Yes. This variable should be kept the same as it will affect how far the car travels.
No. This variable cannot be controlled.
No. This variable should not be kept the same as it is the one you are changing.
Yes. This variable should be kept the same as it will affect how far the car travels.
Yes. This variable should be kept the same as it will affect how far the car travels.
No. This variable should not be kept the same as it is the variable you are measuring.