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 its orbital path.

Question 3

Solar Nebula

Answer 3

A rotating cloud of gas and dust from which the sun 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 is moving, to resist a change in speed or direction until and 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 smell bodies made mostly of ice.