Gravity is:
an electric force.
a fundamental force.
Gravity is:
the same everywhere in the universe.
different in different parts of the universe.
One of the first scientists to explain gravity was:
Isaac Newton.
Copernicus.
Galileo.
Robert Hooke.
The scientist that completed Newton's ideas on gravity was:
Albert Einstein.
Neils Bohr.
Robert Oppenheimer.
Gravitational waves are a theory by:
Albert Einstein.
Isaac Newton.
True or False: Your weight is different on the moon than it is on Earth.
True.
False.
True or False: the moon is attracted by Earth's gravity.
False.
True.
True or False: The moon's gravity affects Earth.
False.
True.
A rock entering the atmosphere and burning up is a:
meteorite
meteor
When a space rock actually touches the ground is a:
meteorite
meteor.
True or False: There are craters on the moon only.
True.
False.
The moon has a lot of craters because it doesn't have an atmosphere.
True.
False.
The moon is a:
star.
satellite.
planet.
The sun is:
a planet.
a star.
a satellite.
The center of the solar system is:
Planet Earth.
The sun.
