Question

match the definitions with their correct vocabulary term. all matter and space a. planet a massive ball of gas in outer space that emits heat b. universe c. star a system of objects that revolve around a star d. galaxy the circular path of an object when it revolves around another object e. solar system f. orbit a group of solar systems, dust and gas held to

Explanation:

1. "all matter and space" is the definition of the universe.
2. "a massive ball of gas in outer - space that emits heat" is the definition of a star.
3. "a system of objects that revolve around a star" is the definition of a solar system.
4. "the circular path of an object when it revolves around another object" is the definition of an orbit.
5. "a group of solar systems, dust and gas held together" is the definition of a galaxy.

Answer:

1. all matter and space - b. universe
2. a massive ball of gas in outer space that emits heat - c. star
3. a system of objects that revolve around a star - e. solar system
4. the circular path of an object when it revolves around another object - f. orbit
5. a group of solar systems, dust and gas held together - d. galaxy