A force that pulls objects toward each other
gravity
the invisible area of electric force around a charged object
electric field
The invisible area of magnetic force around a magnet
magnetic field
the invisible area of gravitational force around an object
gravitational field
This is a picture of a planet with moons orbiting around it. Which moon would have the greatest gravitational pull?
The yellow one (its the biggest)
a push or pull on an object
force
The _____ and ______ are located in the center of an atom.
protons and neutrons
If something is magnetic, it has two different ______.
poles
Why does the earth have a larger gravitational field than the moon?
It has more mass
The kids hair is able to stand up because there is some type of electric field between what two objects?
The couch and the kids hair
any material that attracts iron and materials that contain iron
magnet
When you charge a balloon by rubbing it on a sweater, the electrons are transferred from your sweater to the balloon. What type of charge would an object need in order for it to attract?
Positive charge
When different magnetic poles are brought together, they will _______ eachother.
attract
Decreases
The magnets bouncing are evidence that a _________ exists.
Field
A buildup of charges on an object.
static electricity
What are the TWO factors that cause the strength of the electric field to increase?
1. Amount of Charge
2. Distance
Increasing ________ will cause the magnetic strength to decrease.
distance
Anything that has ______ has gravity
mass
Why are astronauts so much "lighter" on the moon versus the earth?
The moon is smaller (less mass = less gravitational force)
positive or negative; like charges repel, different charges attract
electric charge
Electric and magnetic fields CAN do this, but gravitational fields CAN NOT.
repel
Magnetic fields and gravitational fields are both found on earth. They are also similar because when you increase the ________ you increase the strength of the field.
mass
Gravitational force is the attraction that pulls objects to a ________ object.
larger
Attracted
Opposite
the attraction or repulsion between magnetic poles north and south
magnetic force
When you have these two charges, they will attract to one another.
positive and negative
Magnets in this position will...
repel
True or False: Set #1 has a greater gravitational force than set #2.
False
When the Grinch brings the magnet toward the nail, the distance ____________ causing the strength of the field to ____________.
Decrease
Increase