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Investigating friction variables
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Created on May 31, 2023
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Transcript
Investigating friction variables
©2023 Kapow Primary
www.kapowprimary.com
©2022 Kapow Primary
www.kapowprimary.com
Contents
Investigation question
What are variables?
Identifying variables
Our experiment
Identifying variables
Controlling variables
©2022 Kapow Primary
www.kapowprimary.com
©2022 Kapow Primary
www.kapowprimary.com
Investigation question
Does the roughness of a surface affect the amount of friction produced?
©2023 Kapow Primary
www.kapowprimary.com
©2022 Kapow Primary
www.kapowprimary.com
What are variables?
Click to reveal the definition of a variable.
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.
A variable is something that can change and cause an effect.
©2023 Kapow Primary
www.kapowprimary.com
©2022 Kapow Primary
www.kapowprimary.com
Identifying variables
Click the post it notes to reveal the variables.
Does the roughness of a surface affect the amount of friction produced?
What variable could we measure?
What variable do we need to change?
The distance the object travels.
The roughness of the surface.
©2023 Kapow Primary
www.kapowprimary.com
©2022 Kapow Primary
www.kapowprimary.com
Our experiment
- 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.
©2023 Kapow Primary
www.kapowprimary.com
©2022 Kapow Primary
www.kapowprimary.com
Identifying variables
Click the post it notes to reveal the variables.
Does the material on the ramp affect the distance the car travels?
What variable do we need to change?
What variable could we measure?
The distance the car travels.
The material.
©2023 Kapow Primary
www.kapowprimary.com
©2022 Kapow Primary
www.kapowprimary.com
Controlling variables
Click to reveal if the variable needs to be controlled.
©2023 Kapow Primary
www.kapowprimary.com
©2022 Kapow Primary
www.kapowprimary.com
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.