Science Fair

What are the control variables in our experiment?

• The mass of the car

• The length of the table

• The angle of the ramp

• The size of the car

What is the dependent variable in our experiment?

• How long the ramp is.

• How much time it takes throughout the whole experiment

• How much time it takes for the car to go down the ramp.​

• Making sure the car is the same type and brand. ​

What is the independent variable in our experiment?

• The other differences from the angle of the ramp.

• The different textures of the surface of ramps.​

• By changing the ramps with different textures of the surface.​

• By making a better model with the little green car.

What is the definition of friction?

• The resistance that one surface or object encounters when moving over another

• A split or division between strongly opposed sections or parties, caused by differences in opinion or belief.

• A disagreement between two chemicals

• A serious disagreement or argument, typically a protracted one.

Which ramp texture caused the car to go down the slowest?

• Carpet

• Sandpaper

• Cardboard

• Rubber

• Whiteboard

Which ramp texture caused the car to go down the fastest?

• Carpet

• Sandpaper

• Cardboard

• Rubber

• Whiteboard

Smoother texture creates more friction.

• True

• False

A track's surface texture affect the speed of cars.

• True

• False