Vocab
Force
A push or a pull
The force that pulls things down toward the center of Earth
What objects are attracted to magnets?
Certain Metals (Iron)
Is a kid putting their brakes on her bike a balanced or unbalanced force?
Unbalanced
Push
Applying force on something to move it away
Pull
Applying force on something to move it toward you
What are the two poles of a magnet called?
North and South
Does a car or a bus have a stronger force? Why?
A bus because it's heavier
Unbalances Forces
One force is stronger than the other and the forces act in different directions.
Friction
A force that opposes motion between objects that are touching
Which magnetic poles are attracted to each other?
North and South
What is an example of an object that has a zero net force? (Zero Net Force - When the forces pushing and pulling on an object are equal or balanced. )
A parked car (Answer will vary)
Balanced Forces
The same size and strength but act in opposite directions
Net Force
The sum of all the forces, pushing or pulling on an object.
Which magnetic poles will repel each other?
North and North or South and South
If Zoe and her friend are playing tug of war and Zoe weighs 49lbs. What does her friend have to weigh for them to have a balanced force?
49 lbs.
Static Electricity
A charge that builds up on an object
Zero Net Force
When the forces pushing and pulling on an object are equal or balanced.
Will a magnet pick up more or less paperclips if it is farther away from the paperclips?
Less
Do you want your hiking boots to have low or high friction?
High