The densest planet in the solar system is _____.
Correct Answer: Earth
Earth is the densest planet in the Solar System with an average density of 5.52 g/cm³.
Which two planets are called “Ice Giants”?
Correct Answer: Uranus and Neptune
Uranus and Neptune are called Ice Giants due to their icy compositions and cold atmospheres.
The largest of the four terrestrial planets is ____.
Correct Answer: Earth
Earth is the largest terrestrial planet in both size and mass.
Which planet is called the Morning Star?
Correct Answer: Venus
Venus is known as the Morning Star when visible brightly in the east before sunrise.
The revolution period of Earth is _____.
Correct Answer: 365 ¼ days
Earth completes one revolution around the Sun in 365 ¼ days.
The rotation period of Earth is _____.
Correct Answer: 23 hours, 56 minutes, 40 seconds
Earth rotates once on its axis in 23 hours, 56 minutes, 40 seconds (sidereal day).
Which planet is called the Evening Star?
Correct Answer: Venus
Venus is called the Evening Star when it shines brightly in the west after sunset.
The nearest neighbour of Earth in the Solar System is _____.
Correct Answer: Venus
Venus is the closest planet to Earth in terms of average distance.
Which planet is covered with red dust?
Correct Answer: Mars
Mars, known as the Red Planet, gets its color from iron oxide (rust) on its surface.
The slowest rotatory planet is _____.
Correct Answer: Venus
Venus has the slowest rotation in the Solar System, taking 243 Earth days to complete one rotation.
Planet with the shortest day is _____.
Correct Answer: Jupiter
Jupiter has the shortest day in the Solar System, rotating once in about 9 hours, 50 minutes, and 30 seconds.
Which planet rotates from east to west, opposite to most other planets?
Correct Answer: Venus
Venus rotates retrograde, from east to west, unlike most planets which rotate west to east.
The fastest spinning planet is:
Correct Answer: Jupiter
Jupiter spins faster than any other planet, completing a rotation in under 10 hours.
Which planet has the longest day?
Correct Answer: Venus
Venus has the longest day, with a rotation period of 243 days and 14 hours.
Which planet has a magnificent system of rings?
Correct Answer: Saturn
Saturn is famous for its bright and extensive ring system.
Jupiter’s diameter is approximately ____.
Correct Answer: 11 times Earth’s diameter
Jupiter is massive, with a diameter about eleven times that of Earth.
In 1610, who first looked at Saturn through a telescope?
Correct Answer: Galileo
Galileo became the first person to observe Saturn through a telescope in 1610.
The second largest planet in the Solar System is:
Correct Answer: Saturn
Saturn is the second largest planet after Jupiter.
Which planet can be seen with the naked eye when the sky is very dark and clear?
Correct Answer: Uranus
Uranus can be seen without a telescope under dark, clear skies.
Neptune was discovered by ______.
Correct Answer: Johann Galle
Neptune was discovered by the German astronomer Johann Galle.
Which Planet in the solar system has the largest year?
Correct Answer: Neptune
Neptune takes the longest time to orbit the Sun, completing a year in about 165 Earth years.
Slowest revolving planet in the Solar System is _____.
Correct Answer: Neptune
Neptune has the slowest revolution around the Sun, taking 165 years to complete one orbit.
Which planet in the solar system has the largest year?
Correct Answer: Neptune
The largest year in the Solar System belongs to Neptune due to its great distance from the Sun.
Uranus was discovered by _____ in 1781.
Correct Answer: William Herschel
William Herschel discovered Uranus in 1781, expanding the known boundaries of the Solar System.
Neptune’s revolution period is ___ years.
Correct Answer: 165
Neptune takes 165 Earth years to complete one revolution around the Sun.
Which planet in the solar system is known as the twin of Uranus due to their similarity of size, mass, and composition?
Correct Answer: Neptune
Neptune is considered the twin of Uranus because both planets share similar size, mass, and gaseous composition.