Contact forces

A push/ pull is an example of

• biology

• Force

• wind energy

• science

What is a NON-CONTACT force?

• A push or pull force where the objects are not touching

• A push force where the objects are touching.

• An example would be pulling open a door.

• The only type of force that exists in the world.

When two objects are closer to one another, the force of gravity between them ____________.

• Increases

• Decreases

• Stays the same

• Divides by a factor of 100

What is the difference between MASS and WEIGHT?

• Mass DOES NOT change if the force of gravity changes. Weight DOES change if the force of gravity changes.

• Mass DOES change if the force of gravity changes. Weight DOES NOT change if the force of gravity changes.

• Mass is related to gravity while weight is not.

• If an object is SMALLER, it always has more mass and less weight than a LARGER object.

What are the poles of a magnet called?

• East and West Pole

• North and East Pole

• North and South Pole

• Up and Down Pole

If you placed two magnets next to one another, and the NORTH poles were facing one another, what would happen?

• The magnets would attract (pull together)

• The magnets would repel (push apart)

• The magnets would explode.

• The magnets would spin out of control.

The three examples pictured are of

• Non-contact Forces

• Contact Forces

The force between the phone and the mount is a

• contact force

• non-contact force

If each object has the same mass, which pair has the strongest gravitational attraction?

• The first, because it appears to weigh the most.
• The first, because the arrows are thickest.
• The  second, because it has an even balance of weight and distance.
• The first, because the objects are closest together.

Which of the following will not change in different gravitational fields?

• weight
• force
• mass
• pounds