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.

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.

 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

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

• energy

• force

• speed

• friction

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

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

• true

• false

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