Magnets
What NORTH poles do when they are aligned with another NORTH pole.
Repel
Humans use this non contact force to operate a compass and know which direction North is.
What is magnetic.
What has more friction, sliding across a frozen pond or sliding across the carpet in your bedroom?
What is the carpet has more friction?
A foot kicking a soccer ball.
What is applied contact force?
What happens when SOUTH poles interact with NORTH poles of magnets.
Attract
This type of non-contact force is why hair is attracted to balloons after rubbing together.
What is electrostatic force?
Which two forces are at work when lifting weights? Arm curls.
What is contact pull force and gravity?
An apple falling off a tree.
What is gravitational non-contact force?
What happens when you increase the distance between magnets.
What is decreases the strength of the magnets?
Magnets have a North pole and a South Pole. If two magnets are repelling away from each other, what could be their orientation?
What is N-N or S-S.
Name two examples of a pull force.
Answers vary.
A compass needle turning north.
What is magnetic non-contact force?
What is an example of magnets in every day life. List the most with no repeats to win.
Speakers, Fridge magnets, Doors, Electric motors, Generating electricity, Toys, Medical equipment, Compasses, Maglev trains, induction cookers.
In a room with no air (vacuum), which will fall fastest if dropped from the same height: bowling ball or feather?
What is both at the same time.
These 3 metals are magnetic.
What are iron, nickel and cobalt?
What are some factors (2-4) that affect the amount of friction between two objects?
What is Speed, weight, shape, texture?
Shoes rubbing against the floor.
What is friction? Non-contact force.
Aligning more of these strengthens magnets.
Magnetic domains
This works with gravity to slow the fall of objects.
What is air resistance?
Do you weigh more on the moon or Earth? Why?
On the Earth because there is more gravity pushing down on you.
Why is it that people rub their hands together to warm them up?
It causes friction which produces heat energy?
A book sitting on a table.
What is normal contact force? And, gravitational force (non-contact).