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12 Cards in this Set

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This test is on Wednesday, March 3 in Mrs.Dunlap's Science class.
If you see * on the bottom of a card:
There is more than one acceptable answer.
As long as it makes sense, the answer is fine
STUDY!
STUDY!
STUDY!
STUDY!
STUDY!
STUDY!
Weight
The amount of force gravity exerts on an object
What is always needed to move a vehicle?
force
Energy
Is the ability to do work
What will cause the vehicle to stop?
friction
Give an example of potential or stored energy
Gasoline stored in a tank of a car

*
What was the force to move the vehicle with the falling weight system?
washers
With our propeller driven vehicle, where was the energy stored?
in the rubber band
Describe a situation in which friction is wasteful
When a wheel is rubbing against an axle, there is wasteful friction.
Describe a situation in which friction is useful.
When tread on my sneaker touches the ground to prevents me from slipping.

*
Explain why our vehicles continued to move even after the rubber band unwound from the axle.
The vehicle built up enough speed and momentum to continue on going.
Tell two ways to increase the speed of your vehicle- this can be any one of the vehicles you worked with.
Falling Weight System: Decrease the mass by removing connects or increase the number of weights to increase the force. *

Rubber Band: Increase the number of times the rubber band is wound around the axle, decrease the mass by removing connects.*

Propeller: Increase the number of times you wind the propeller, decrease the mass by removing connects.*