4.2 Energy Conversion & Conservation

Multiple Choice

Energy cannot be created or destroyed, only converted from one form to another.

• true
• false

Multiple Choice

At which point is potential energy greatest?

• W
• X
• Y
• Z

Multiple Choice

As a pendulum swings from its highest to lowest position, what happens to its kinetic and potential energy? 

• Both the potential energy and kinetic energy decrease
• The potential energy decreases while the kinetic energy increases 
• The kinetic energy decreases while the potential energy increases 
• Both the potential energy and kinetic energy increase 

Multiple Choice

At which point is kinetic energy greatest? 

• W
• X
• Y
• Z

Multiple Choice

When a pendulum swings, at which point is kinetic energy highest?

• 1
• 2
• 3
• 4

Multiple Choice

When a pendulum swings, at which point is potential energy at its greatest?

• 1
• 2
• 3
• 4

Multiple Choice

Energy can be _____________, meaning changed from one type to another.

• destroyed
• converted
• created
• conserved

Multiple Choice

What is energy mostly dissipated as?

• potential and kinetic 
• mechanical and electrical
• sound and thermal 

Multiple Choice

If the marble had 6.9 J of (potential) energy at the top of the hill and 5.4 J of (kinetic) energy at the bottom of the hill, was energy conserved and why?

• No because total energy in the system decreased

• Yes because the total energy in the universe changed

• Yes because the total energy in the system stayed the same

Multiple Choice

If the marble had a mass of 0.3kg and the hill was 2.3 m tall, how much potential energy did it have at the top of the ramp?

• 2.3 J

• 0.23 J

• 6.76 J

• 5.2 J