Pole
What are the 2 ends of a magnet called?
North and South Poles
What doe we call a push or pull on an object?
force
What is the force that acts between surfaces that are sliding past each other?
friction
What is gravity?
a non contact force that pulls toward the center of the earth
What does it mean to repel?
To push away
what happens when you bring 2 north pole sof a magnet together?
They repel each other
What is it called when two objects are touching and pushing against each other?
contact force?
contact force
What effect does friction have on moving objects?
Slows it down
What would happen to objects if there was no gravity?
They would float away
What happens when like poles of magnets come close together?
They repel eachother
What pole of the magnet is attracted to the south pole?
The north pole
What do we call a force that acts between two objects that are not touching?
non contact force
What type of surface would create more friction: sandpaper or ice?
sandpaper
What is the force of gravity on Earth called?
weight
Can two magnets repel each other if they are different types?
No they repel
What is the strongest part of a magnet called?
Give an example of a noncontact force.
Gravity
Name one way to reduce friction.
using lubrication like oil
How does gravity affect objects of different weights?
gravity pulls all objects to the center of the earth no matter what they weigh
What is one way to demonstrate repelling forces?
By using magnets
How can you identify the poles of a magnet
use another magnet and see what it does
Can you give an example of a contact force?
a person pushing a door
How does friction help when walking?
prevents slipping
Who is known for describing gravity?
Isaac Newton
Does Gravity repel objects or pull them together?