Planets of the Solar System

Question 1

solar system

Answer 1

the sun and all of the planets and other bodies that travel around it

Question 2

planet

Answer 2

a celestial body that orbits the sun, is round because of its own gravity, and has cleared the neighborhood around exoplanets may form

Question 3

solar nebula

Answer 3

a rotating cloud of gas and dust from which the sum and planets formed;also any nebula from which stars and exoplanets may form

Question 4

planetesimal

Answer 4

a small body from which a planet originated in the early stages of development of the solar system

Question 5

eccentricity

Answer 5

the degree of elongation of an elliptical orbit

Question 6

orbital period

Answer 6

the time required for a body to complete a single orbit

Question 7

inertia

Answer 7

the tendency of an object to resist being moved or, if the object is moving, to resist a change in speed or direction until an outside force acts on the object

Question 8

terrestrial planet

Answer 8

one of the highly dense planets nearest to the sun; Mercury, Venus, Mars, and earth

Question 9

gas giant

Answer 9

a planet that has a deep massive atmosphere, such as Jupiter, Saturn, Uranus, or Neptune

Question 10

Kuiper Belt

Answer 10

a region of the solar system that starts just beyond the orbit of Neptune and that contains dwarf planets and other small bodies made mostly of ice