Magnetism
A piece of metal that has a magnetic field that can attract other pieces of metal
What is a magnet?
This particle in an atom has a negative electric charge
What are electrons?
Attaching a battery to a wire coiled around an iron nail, then touching the nail to a paperclip will cause this kind of force
What is an attractive force?
This tool uses a magnetized needle to determine directions
What is a compass?
This scientist explained gravity as the force that keeps planets in orbit around the Sun.
Who is Issac Newton?
This pair of poles will create an attractive force
What are opposites?
Electric forces and gravitational forces are similar because both act at a
What is Distance?
This is one way that you could increase the strength of an electromagnet
What are more coils? or larger source of electricity?
This could distract a compass from pointing in the correct direction
What is a magnetic field? or ferromagnetic material? or electric current?
The strength of gravity depends on two factors: the objects’ ______ and the ______ between them.
What are mass and distance
This type of magnet is always a magnet and doesn't stop.
What is a permanent magnet?
This particle of an atom has a positive electric charge
An atom is a mini magnet because of this
What are the moving electrons?
This material is liquid in the earth's core creating a magnetic field around the earth
An astronaut drops a hammer and a feather on the Moon. They land at the same time because there is none of this.
What is Air Resistance?
This pair of poles will create a repulsion force
What are like poles?
What is a magnetic field?
Unlike a permanent magnet, an electromagnet only works when this is flowing.
What is an electric current?
Santa Clause lives at this magnetic pole of the earth
What is the south magnetic pole?
On the Moon, gravity is about 1/6th as strong as on Earth. If you weigh 120 pounds on Earth, about how much would you weigh on the Moon?
What is 20 Pounds?
This is where a magnetic field is the strongest
Where are the poles?
When a negatively charged object comes in contact with a neutral object these will be transferred from the negative to the neutral
What are electrons
The name of the process where you can create an electric current with a magnet.
What is electromagnetic induction?
The earth's magnetic field protects us from solar winds causing this phenomenon above the poles
What is an aurora?
Planets closer to the Sun orbit faster than planets farther away. This is because the Sun’s gravity is stronger in shorter distances requiring faster what?
What is forward momentum of the planets?