Energy, Forces, and Motion

What causes 2 magnets to attract?

• Both poles are north
• They are opposite poles
• Both poles are south
• There are no poles

How much force will it take to raise the weight on the pulley?

• 50 newtons
• 125 newtons
• 100 newtons
• 75 newtons

Which is true about energy?

• Energy can cause motion
• Energy cannot be stored
• Energy can be destroyed
• Energy cannot be stored

What does the picture show about magnetic force?

• it can act on all kinds of materials
  
• it is a very weak force
• it always stops the motion of an object
• it can act over a distance

What does this diagram show?

• jumping will cause the object to move
• no force is need to put an object in motion
• an object will go in the direction of the force applied
• object will go in opposite direction of the force applied

What kind of energy does this give off?

• light energy
  
• sound energy
• heat energy
  
• electrical energy
  

What can you do to make this wagon move?

• add more newspapers
  
• put marbles in the wagon
• get into the wagon
  
• pull on the wagon

What force is used in a compass?

• gravitational
• magnetic
• a pull
  
• electric

What type of energy is shown in this picture?

• light energy
  
• mechanical energy
• wind energy
  
• sound energy

 Why is the cloth in the middle not moving?

• Force A is stronger
  
• Force B is stronger
• Force A and Force B are the same direction
  
• Force A is equal to Force B