Physical Science Chapter 12 Test B

Work is the transfer of _____.

• energy
• power
• force
• mass

Energy that is stored because of position or shape is _____ energy.

• potential
• kinetic
• mechanical
• electromagnetic

The energy of motion is _____ energy.

• potential
• kinetic
• mechanical
• electromagnetic

Mechanical energy is _____.

• potential energy plus kinetic energy
• potential energy divided by kinetic energy
• potential energy times kinetic energy
• work output divided by work input

Which of the following is NOT an example of potential energy?

• a boy rolling downhill on a skateboard
• an alarm clock wound up by a tightening spring
• a stretched pair of spandex yoga pants
• a balloon squeezed tight

Which of the following does NOT affect gravitational potential energy?

• velocity
• mass
• acceleration due to gravity
• height

A 75 kg refrigerator is located on the 7^th floor of a skyscraper (30 meters above the ground)  What is the potential energy of the refrigerator?

• 22,050 J
• 2250 J
• 525 J
• 15750 J

What has the greatest effect on kinetic energy?

• velocity
• mass
• height
• acceleration due to gravity

The unit energy is measured in is _____.

• joules
• newtons
• watts
• percentage

Determine the kinetic energy of a 1000 kg roller coaster car that is moving with a speed of 20.0 m/s.

• 200,000 J
• 100,000 J
• 20,000 J
• 196,000 J