Forces
What is a force?
A force is a push or pull that causes movement.
What are magnetic materials?
Magnetic materials can contain iron, cobalt, or nickel.
What is gravity?
Gravity is an invisible force that pulls objects to the center of the Earth.
What does “matter” mean?
Anything that takes up space and has mass.
What are the two poles of a magnet called?
North and South poles.
Name two types of forces.
Contact force and non-contact force.
What are the two magnetic poles?
The north pole and south pole.
How does gravity affect falling objects?
It causes them to fall towards the Earth.
What does “attract” mean?
To pull toward.
Which type of force is “invisible”?
Non-contact force.
What is a contact force?
A contact force is any force that uses contact to move an object.
What happens when you bring two same poles together?
They will repel each other (push away).
Why do heavier objects fall faster?
The greater the mass, the greater the gravitational pull.
What does “repel” mean?
To push away.
Give one example of a force in daily life.
Example: kicking a ball, pushing a chair, opening a door.
Give an example of a non-contact force.
Gravity or magnetic force.
What happens when you bring opposite poles together?
They are attracted to each other (pull towards).
What is the relationship between mass and gravity?
Gravity pulls all objects toward Earth, and a greater mass means a stronger pull.
What does “magnetize” mean?
To make an object become a magnet.
What happens when you rub or strike certain objects with a magnet?
You magnetize them — they become magnets.
How does mass affect gravitational pull?
The greater the mass of an object, the greater its gravitational pull.
How can you magnetize an object?
By rubbing or striking it.
Give an example of an object affected by gravity.
A pencil rolling off a desk.
What is the difference between “mass” and “weight”?
Mass is the amount of matter; weight is the pull of gravity on that mass.
True or False: Only the north pole attracts magnetic materials.
False