Chapter 2 Forces Test

What is a force?

• A force is push or pull that acts on an object and changes the way that object moves

• A force is a magical thing that we don't really know what it does

• A force is something that keeps an object still

What are contact forces?

• A contact force is two objects that are not touching

• A contact force requires that the two objects are in contact with each other

• A contact force is when objects are floating around in space

What is friction?

• Friction is a type of contact force that results when two materials rub against each other

• Friction is a non-contact force

What is an example of friction?

• Rubbing feet on carpet

• An object falling

• Nothing

What are non-contact forces?

• Forces that are in contact with each other

• Forces that are NOT in contact with each other

• Forces that you can feel

What is gravity?

• Something magical

• The force that pulls everything down

• The force that makes everything float

What are magnetic forces?

• Forces that involve gravity

• Forces that involve electricity

• Forces that involve magnets

What poles of magnets attract each other?

• Opposites attract! (north and south)

• The same poles (north and north)

What is acceleration?

• A car traveling at a constant speed

• Any change in motion

• Only something going really fast

What is uniform motion?

• Any motion that is changing

• Any motion that is uniform and staying the same

• Something that is not moving