Static Electricity
Is static electricity a non-contact or contact force? Explain your answer!
Non-contact, this is because the charges attract without directly touching! This of a balloon pulling your hair up without touching it after rubbing it on your clothing!
Is gravity a contact or non-contact force? Explain your answer!
Non-contact, this is because gravity pulls us to the Earth without actually touching us!
What does attraction mean?
To pull towards!
What does repel mean?
To push away!
List the 4 non-contact forces!
What charges attract? What charges repel?
Is a ball falling to the ground after throwing it up in the air an example of gravity? Explain your answer!
Yes it is! Gravity pulls the ball back to the Earth without touching it!
What are the poles on a magnet? Which ones repel and which ones attract?
The poles on a magnet are South and North. Like poles repel and opposite poles attract!
Where is the strongest force on a magnet?
At the magnetic poles, south and north sides!
Is gravity a pull or a push force?
Gravity is a pull force that pulls towards the ground!
Explain what is happening when I rub a balloon on my head and then stick it to a wall. Make sure to explain the transfer and attraction of charges!
This is an example of static electricity. When I rub the balloon on my head the negative charges from my head transfer to the balloon. There are too many negative charges so they want to leave the balloon. This makes the balloon attracted to the positive charges in the wall which causes the balloon to stick for a little while.
Is the force of gravity the same everywhere? Think of your weight in space!
No, the force of gravity is not the same everywhere. This is why we can float in space and don't weigh as much on the moon!
Can magnetic force act through materials? Give an example!
Yes they can. A magnet can attract another magnet through paper!
Does magnetic force get stronger as two magnets get further apart? Explain.
No, magnetic force gets stronger as magnets get closer together!
What non-contact force is this an example of: jumping on a trampoline and falling back down onto the trampoline.
Gravity because we are being pulled back down to the ground!
Is lightning an example of static electricity? Explain your answer!
Yes it is! This is because storm clouds are positively charges on the top and negatively charged on the bottom. The negative charges on the bottom want to attract to the nearest positive charges to the jump and this causes lightning!
If an object weighs more, is the attraction/pull of gravity stronger? (Hint: Think of dropping a marble and a feather from the same height at the same time, do they land at the same time.)
Yes, mass/weight does impact the strength of the attraction of gravity.
What materials are magnets made of and what materials do magnets commonly attract?
Magnets are made of nickel, cobalt and iron and commonly attract metals with nickel, cobalt and iron in them!
Do both the south and north poles of a magnet attract materials?
Yes, both the south and north poles of a magnet attract magnetic materials!
What forces become stronger as they get closer together?
Non-contact forces!
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Do the moon and space have a stronger or weaker gravitational pull than the Earth? Explain your answer!
The moon and space have a weaker gravitational force than the Earth. This means we weigh a lot less on the moon compared to the Earth and this is why we can float in space but not on Earth!
Tell us what each group has in common.
Magnetic materials are generally metals and non-magnetic materials are generally non-metals.
Can non-magnets becomes magnetized (become magnets) when acted on by a magnet!
Most coins are made of copper and gold. Does this make them magnetic or non-magnetic? Remember what magnets are made of!
They are not magnetic because they are not made up of magnetic materials likes cobalt, nickel and iron.