1.
This is the growth of a massive object by gravitationally attracting more matter, typically gaseous matter, in stellar or protoplanetary disk.______________
2.
This is when opposite poles of a magnet move toward each other and toward certain types of materials.________________
3.
This is a measure of mass per unit volume.______________
4.
This is the measured value (always positive) from one point to another._________________
5.
This law states that every object is gravitationally attracted to every other object in the universe with a force directly proportional to the product of the masses of the two objects, and inversely proportional to the distance separating the two objects.
6.
This is a measure of the quantity of matter._______________
7.
This is the path which one body follows around another body in space.______________
8.
This is a celestial body in orbit around a star.______________
9.
This is the Sun and the celestial objects bound to it by gravity. This includes the eight planets and their 166 known moons, four dwarf planets, and billions of small bodies, including asteroids, comets, meteoroids, and interplanetary dust._______________
10.
This is the star at the center of the solar system around which the Earth and other matter orbit._______________
11.
the force that causes objects with mass to attract one another._____________
12.
the tendency of a physical object to remain still or continue moving unless force is applied.________________
13.
the motion of a moving object, determined by the product of its mass and velocity_______________
