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stuff
100
for every force, or action, there is
an equal or opposite reaction force
100
Phases of the moon you see depends on
how much of the sunlit side faces earth
100
an equinox occurs when
neither hemisphere of the earth is tilted toward or away from the sun.
100
the steepness of a line on a graph is called
slope
100
In a series circuit with three bulbs, what happens to the brightness of the bulbs as you add more?
it becomes dimmer
200
the highest points of a transverse wave are called
crests
200
a planet is large enough to have been rounded out by its own
gravity
200
what would happen to mechanical efficiency if there was no friction?
it would have an equal input and output work
200
Product of an objects mass and velocity
momentum
200
An example of an energy efficient device
incandescent light bulbs
300
when you know both the speed and direction of an objects motion, you know its
velocity
300
A curved piece of glass or other transparent substance that is used to refract light
lens
300
sun produces energy by
nuclear fission
300
the primary colors of light are
red, blue, and green
300
the buildup of charges on an object is called
static electricity
400
the transparent front surface of the eye is the
cornea
400
the bending of waves around the edge of a barrier is known as
diffraction
400
the fact that each planets orbit is an ellipse was discovered by
kepler
400
tendency of a moving object to continue moving in a straight line or a stationary object to remain in place is
inertia
400
force that causes an object to move in a circle is called
centripetal force
500
an electric current produces a
magnetic field around the object
500
mechanical waves are classified according to
how they move
500
why do you see lightning from a distant storm before you hear thunder?
light travels faster than sound
500
How can you increase the momentum of an object?
increase the mass or velocity
500
the strength of the force of gravity depend on
their masses and distances
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