5.6 Force, Motion

Which form of energy is best shown in this picture?

• mechanical
• electrical
• chemical
• nuclear

A class prepared some electrical circuits using battery, connecting wires, and three light bulbs.  Which of these circuits can make the three bulbs light?

• A
• B
• C
• D

What is one problem with using a series circuit? 

• It has a lot of series. 
• If one goes down, they all go down! 
• It doesn't work properly.
• There are no problems. 

The pictures shows what a student observed when he looked through a hand lens at a penny.
What happens to light passing through a hand lens that makes the image of the penny appear larger? The light is-

• absorbed
• reflected
• refracted
• stopped

5.6B If you were building a circuit, why would you use copper and not rubber to send electricity through the circuit?

• Copper is a better insulator. 
• Rubber is a better conductor.
• Copper is an insulator, but rubber is a conductor. 
• Copper is a conductor, but rubber is an insulator. 

A student placed a pencil in a cup of water.  The pencil appears broken because light-

• always travels in a straight line
• bends when it passes through water
• makes the water in the glass evaporate
• reflects the pencil on the water's surface

5.6A Suppose you are listening to a musician using energy to play a song on his trumpet. What forms of energy is he using? 

• electrical energy and sound energy
• mechanical energy and sound energy
• chemical energy and thermal energy
• thermal energy and mechanical energy

A polar bear slides down an ice covered hill. As he slides, he slows down. Eventually he comes to a stop. What force  acts on an object to slow or stop its motion?

• Speed
• Friction
• Gravity
• Direction

The illustration shows a light ray striking an object.
In the illustration, the light ray striking the object is-

• absorbed
• stopped
• reflected
• refracted

Which experiment listed below will best determine how friction affects the speed of a rolling object?

• Roll 3 objects of various sizes across the floor.
• Roll 3 objects of equal size from various heights across the floor.
• Roll 3 objects of equal size across 3 different types of surfaces.
• Roll 3 objects of equal size from equal heights across the floor.