Show:
Controlled Experiments
Motion Video
Our Experiments
Types of Energy
Mixed!
100
In order for an experiment to be considered a controlled experiment, what has to be true?
Only one variable can be changed at a time
100
The force that pulls everything towards the center of the Earth
Gravity
100

Name two things that were helpful in the technical car drawings

Color, labels, neatness, large enough to see clearly, etc.

100
What is potential energy? Give one example
Energy of position. A book resting on the edge of a table.
100

Fill in the blank: _____ is a property of matter

Inertia

200
Name the variables that are kept the same in an experiment
Controlled variables
200
This word means change in speed
Acceleration
200
Name two things that made our vehicles move more slowly during our experiments using the string system
More wooden blocks, less washers, rougher surface, upwards tilt, heavier car...
200
What is kinetic energy? Give one example.
Energy of motion. A pencil rolling off a table.
200

What type of energy does a roller coaster have at the top of a hill?

Potential

300
Name the variable that is changed in an experiment
Manipulated variable
300
What is force?
Pushing or pulling an object
300
Name two things that made our vehicles move more quickly during our experiments using the string system
Less wooden blocks, more washers, smoother surface, downward tilt, lighter car...
300
Define energy
The ability to do work or make things happen
300

What type of energy does a roller coaster have as it descends down a hill?

Kinetic
400
When testing the distance your car traveled using different numbers of winds with the rubber bands, what type of variable was the distance traveled?
Measured variable
400
Define mass
The amount of matter in an object
400

When we removed the rubber tires from our standard car, we found out that the car did not move. Explain how the rubber tires enable the car to move.

They create friction between themselves and the floor, allowing the tires to grip the ground and propel the car forward

400
This is the source of most of the energy on Earth
The sun
400

A bowling ball and a ping pong ball are sitting on a flat surface.  Both are pushed with the same amount of force.  Which will travel farther?

The ping pong ball

500
We conducted an experiment to determine whether the number of blocks carried by your car will impact the time it took it to travel 12 inches. Name the manipulated variable, measured variable, and at least two controlled variables from the experiment.
Manipulated variable - number of blocks; Measured variable - seconds it took the car to travel 12 inches; Controlled variables - standard car, standard set-up, number of washers, surface...
500
Inertia states that an object in motion stays in motion. Name the force that keeps this from happening on Earth.
Friction
500

If you place a penny on an index card and flick or pull the card away quickly, the penny stays in place and falls into the cup. Name the rule of motion that keeps the penny from traveling with the card, as well as the one that makes the penny fall.

Inertia and gravity

500
Define the "Conservation of Energy"
Energy cannot be created or destroyed
500

A bowling ball and a ping pong ball are sitting on a flat surface.  You are going to push BOTH objects, but you want the bowling ball to travel farther.  How do you make this happen?

Apply more force to the bowling ball and less to the ping pong ball.