Motion & Design Lesson 6-8

What direction will the wheels turn after the rubber band is released in step 3?

• The same direction of the arrow.

• The opposite direction of the arrow.

• The wheels will not turn.

• First in the opposite direction of the arrow, then in the same direction.

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How does the rubber band apply force to the axel?

• It pulls the top of the axle toward the front of the car.

• It pushes the underside of the axle toward the front of the car.

• It pulls the two back wheels in opposite directions.

• It pushes the top and bottom of the axle equally toward the front of the car.

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 In lesson 6, the rubber band has the potential to move the vehicle because of its stored energy.  However, there is no motion until…

• the vehicle stops

• the wheels stop

• the rubber band is released

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 When the rubber band completely unwound in lesson 6, it had no more ________​ to give the vehicle.​

• energy

• force

• speed

• friction

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When the rubber band completely unwound in lesson 6, the vehicle continued to roll while  _____________  slows it down.  

• motion

• energy

• friction

• speed

The more the rubber band is wound over the axle, the vehicle's _____ will increase.

• energy

• speed

• distance

• all of the above

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The more tension is on the rubber band, the more potential energy it has.

• true

• false

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What was the independent variable in lesson 7?

• the vehicle

• the number of rubber bands

• the size of the rubber bands

• the turns of the rubber bands

In lesson 7, why did we do 3 trials for each turn of the rubber band?

• to give everyone a turn

• for more accurate data

• to test different locations

• to test different vehicles

When the rubber tires in made contact with the floor in lesson 8, it was an example of _______.

• negative friction

• inertia

• positive friction

• potential energy