Gravity
Magnetism
Electricity
100
the force that attracts a body toward the center of the earth, or toward any other physical body having mass
What is Gravity?
100
a physical phenomenon produced by the motion of electric charge, resulting in attractive and repulsive forces between objects
What is magnetism?
100
a form of energy resulting from the existence of charged particles
What is electricity?
200
gravity itself is a
What is force?
200
The Earth is a very big _______.
What is a magnet?
200
Electricity is ____ a purely human invention
not
300
is credited with discovering gravity
Who was Isaac Newton?
300
A ________ has a tiny magnet in it. The arrow always points to the North Pole.
What is a compass?
300
Electricity travels in closed loops, or ______.
What are circuits?
400
gravity keeps objects from _______ from the Earth's surface
floating away
400
The Earth’s magnetic force is not ____ ______.
very strong
400
A _______ produces electricity using two different metals in a chemical solution.
What is a battery?
500
Gravity is affected by the _____ and ________ of objects.
What are size and proximity?
500
Every _______ is surrounded by an invisible, three-dimensional magnetic field.
What is a magnet?
500
*******DAILY DOUBLE******** The movement of electric charge is known as an _______ _______, and intensity of which is usually measured in _______.
What are electric current and amperes?
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