Science Year 3 Forces Lesson 6

Multiple Choice

What area of Science are we studying in the Forces unit?

• Biology

• Physics

• Chemistry

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https://www.youtube.com/watch?v=R16p4q7Voi4

Let's learn about variables.

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Match

Match the variables with the definitions

• independent variable

• dependent variable

• controlled variable

The thing you are changing

The thing you are measuring

The things that are kept the same

• The thing you are changing

• The thing you are measuring

• The things that are kept the same

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Multiple Choice

Which variable is changed during the investigation to see its effect on the car's travel distance?

• Surface of the ramp

• Height of the ramp

• Starting position of the car

• Mass of the car

Multiple Select

Which of the following are control variables in the ramp investigation?

• Height of the ramp

• Surface of the ramp

• Distance the car travels

• Starting position of the car

​Our independent variable is the surface of the ramp.

​Our dependent variable is the distance the car travels.

​A control variable is the height of the ramp.

​I predict that the material with the most friction will be



​I predict that the material with the least friction will be

​Predicition

Multiple Choice

What is the purpose of recording the distance the car travels for each material in three separate tests?

• To compare results and check for consistency

• To make the table look full

• To confuse the observer

• To use more paper

​We found that the car moved further when the surface was ________. It moved the least when the

surface was _________. This shows that the surface
material changes how far something moved. This

effect is called friction.

Conclusion

Open Ended

Reflecting on today's lesson about forces and scientific investigations, what is one question you still have or something you would like to know more about?

Open Ended

Explain how the concepts of 'balanced' and 'unbalanced' forces affect the motion of an object. Use examples from the keywords provided.