The Planets of the Solar System

It is known as the RED PLANET.

• Saturn

• Mars

• Uranus

• Mercury

Answer explanation

Mars is known as the Red Planet because iron minerals in the Martian soil oxidize, or rust, causing the soil and atmosphere to look red.

It has 27 moons and the largest is "Titania."

• Jupiter

• Neptune

• Uranus

• Mars

Answer explanation

Uranus has 27 moons that we know of. Five of the moons are large and the rest are much smaller. Titania is the largest moon of Uranus and it is covered with small craters, a few large craters, and very rough rocks.

Which planet has the shortest day?

• Jupiter

• Earth

• Mars

• Neptune

Answer explanation

Jupiter has the shortest day in the solar system. One day on Jupiter takes only about 10 hours (the time it takes for Jupiter to rotate or spin around once), and Jupiter makes a complete orbit around the Sun (a year in Jovian time) in about 12 Earth years (4,333 Earth days).

Which planets have the most moons?

• Earth and Saturn

• Mars and Mercury

• Jupiter and Saturn

• Jupiter and Mercury

Answer explanation

Astronomers have discovered 12 new moons around Jupiter, putting the total count at a record-breaking 92. That's more than any other planet in our solar system. Saturn, the one-time leader, comes in a close second with 83 confirmed moons.

Which planet is the closest to the Sun?

• Mars

• Earth

• Pluto

• Mercury

Answer explanation

The planet that is closest to the Sun is Mercury. Mercury orbits the Sun more closely than any other planet, at a mere 57.9 million kilometers on average.

A planet in the solar system that has a day which lasts longer that its year.

• Jupiter

• Venus

• Neptune

• Mars

Answer explanation

Venus rotates very slowly on its axis – one day on Venus lasts 243 Earth days.

Name the planets in the solar system, starting nearest to Sun.

• Mercury, Venus, Earth, Mars, Saturn, Jupiter, Uranus, Neptune

• Mercury, Venus, Earth, Mars, Saturn, Uranus, Jupiter, Neptune

• Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune

• Mercury, Venus, Earth, Mars, Jupiter, Neptune, Saturn, Uranus

Answer explanation

The planets, in order of their distance outward from the Sun, are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.

Tags

NGSS.MS-ESS1-3

Which planet is called the "Evening or Morning Star"?

• Venus

• Uranus

• Jupiter

• Mercury

Answer explanation

Venus is known as the evening or morning star.

Which of the following is the only planet which CANNOT be seen with the unaided eye?

• Neptune

• Jupiter

• Mars

• Saturn

Answer explanation

More than 30 times as far from the Sun as Earth, Neptune is the only planet in our solar system not visible to the naked eye.

Which planets belong to "The Terrestrial Planets?"

• Mercury, Venus, Earth, and Jupiter

• Mercury, Venus, Earth, Mars, and Jupiter

• Mercury, Venus, Earth, and Mars

• Mercury, Mars, Earth, and, Uranus

Answer explanation

The planets Mercury, Venus, Earth, and Mars, are called terrestrial because they have a compact, rocky surface like Earth's terra firma.