what two factors determine the strength of the force of gravity between two objects
Every object in the universe attracts every object
What is the law of universal gravitation?
mass increases, distance stays the same
mass decreases, distance stays the same
mass stays the same, distance decreases
mass stays the same, distance increases
the tendency of an object to resist a change in motion
what is inertia
what two factors kept the planets in orbit
a push or a pull
a force that attracts everything to each other
states that every object in the universe attracts every other
law of universal gravitation
the amount of matter in an object
the force of gravity on an object
the tendancy of an object to resist a change in motion
an object at rest will stay at rest and an object in motion will stay in motion unless acted upon by a force
Newton's first law of motion
when the moon's shadow hits earth or earths shadow hits the moon
When does an eclipse occur
the different shapes of the moon you see from earth are called________.
about every 29.5 days
how often does a moon go through an entire set of phases
the side of the moon facing Earth is dark
you can see half of the sunlight side of the moon
the entire sunlit side faces earth
you can see half of the moons lighted side
lunar and solar
what are two types of eclipses
the darkest part of the moons shadow is called the ____________.
the larger part of a shadow, less dark than the umbra, is called the ____________.
The rise and fall of ocean water are called __________.
what force pulls the moon and the earth toward each other
A ______ tide occurs when the sun is at right angles to the line between earth and the moon
A person standing in the moons ___________ would see a partial solar eclipse
a person standing in the moons _________ would see a total solar eclipse
DIfferences in the moons pull on different parts of the earth cause ________.
The _________ of the moon you see depends on how much of the sunlit side of the moon faces earth
A _________ tide occurs when the sun, moon, and earth line up