Force and Motion

Why is the depth of the dent different in each trial

• The size of the ball changes.
• The material of the ball changes.
• The mass of the ball when it hits the clay changes.
• The force of the ball when it hits the clay changes.

Identify the energy conversion in the picture.

• Electrical to light energy
• Electrical to sound energy
• Light to electrical energy
• Light to hear energy

A student looks into a mirror and sees an image of an object. Where might the image appear?

• F
• H
• G
• J

Along with mechanical energy which is produced as electric current passes through this circuit?

• Heat
• Mass
• Light
• Water Vapor

To recharge the battery for later use without lighting the bulb, which switch should be closed?

• Switch S only
• Switches R and S only
• Switches R and T only
• Switches R, S, and T

Which procedures will result in only the blue lightbulbs operating?

• Close Switches 1 and 2 and leave Switch 3 open
• Close Switch 3 and leave Switches 1 and 2 open
• Close Switch 2 and leave Switches 1 and 3 open
• Close Switches 2 and 3 and leave Switch 1 open

 A student uses a set of headphones to listen to music. Which of these objects uses the same source of energy as the headphones?

• A flute using wind energy  
• A piano using mechanical energy  
• A keyboard using electrical energy  
• A teapot using thermal energy  

What should the student do to improve this experiment?

• Use blocks of equal mass on the four pieces of elastic
• Use blocks with enough mass to cause the four pieces of elastic to break
• Use more than four pieces of elastic and four blocks
• Use four pieces of elastic with different lengths but the same width