EFS (5th Grade)

1.   Which of these can affect your race car's performance?

• Weight

• Aerodynamics

• Friction

• All of the above.

What does the science of aerodynamics study?

• The movement of air around an object

• The weight of objects

• The speed and flight of objects

• The sound of air

To have an aerodynamic car...

• add a piece of tagboard at the back for more drag.

• bigger is always better.

• narrower at the front is better.

• use as much weight as possible.

What word describes a force that slows an object when air pushes against it?

• Deceleration

• Downforce

• Drag

 True or False?  Potential energy is also called kinetic energy.

• True

• False

Friction can happen

• where the axle rubs against the car.

• if the car rubs against the side of the track.

• where the tires rub against the road.

• All of the above.

More weight can help you go faster when racing downhill.

• True

• False

If you race 2 cars down a ramp that are exactly the same shape but have different weights, which car will go farther?

• The heavier car

• The lighter car

• They will go the same distance

When racing cars down a hill

• Putting weight in the front gives more potential energy.

• Putting weight in the back gives more potential energy.

• Weight will make you go less far.

• Weight won't matter.

Val, our volunteer, works as an engineer at what local Lakeville company?

• Elko Speedway

• BTD

• QA1

• Subway