8th Grade Planets And Space Quiz

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| By Alisonmakepeace

Alisonmakepeace

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Quizzes Created: 6 | Total Attempts: 34,825

Questions: 13 | Attempts: 12,695 | Updated: Oct 23, 2024

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Space is vast and infinite; it is a boundaryless arena of planets, stars, galaxies, and unimaginably large objects. This space quiz for class 8 is designed to test your understanding of the universe and our solar system; it consists of interesting facts and information that will enhance your understanding of the cosmos and magnify your interest in the subject. If you like the quiz, share it with your friends. Let's go on the journey of the cosmos to learn and explore the vastness of the cosmos' space. All the best!

Questions and Answers

1.

What is the furthest planet from the sun?
- A.
  
  Earth
- B.
  
  Neptune
- C.
  
  Uranus
- D.
  
  Mars
Correct Answer
B. Neptune

Explanation
As of the most recent definitions and classifications in astronomy, the furthest planet from the Sun in our solar system is Neptune. Neptune is the eighth planet in the solar system and took over the position of the farthest planet from the Sun after Pluto was reclassified as a "dwarf planet" by the International Astronomical Union in 2006.

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2.

How many days does it take the earth to travel around the sun?
- A.
  
  24 Hours
- B.
  
  1 Month
- C.
  
  365 Days
- D.
  
  465 Days
Correct Answer
C. 365 Days

Explanation
The correct answer is 365 Days. The earth takes approximately 365 days to complete one orbit around the sun. This period of time is known as a year. It is the reason why we have seasons and experience changes in weather patterns throughout the year.

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21
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3.

What is the largest planet in the solar system?
- A.
  
  Jupiter
- B.
  
  Saturn
- C.
  
  Venus
- D.
  
  Neptune
Correct Answer
A. Jupiter

Explanation
Jupiter is the largest planet in the solar system. It has a diameter of about 86,881 miles, making it more than 11 times the size of Earth. Its massive size is due to its composition, primarily consisting of hydrogen and helium gases. Jupiter's immense gravity also contributes to its size, as it has a strong gravitational pull that allows it to capture and retain a large number of moons.

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15
1
4.

The earth revolves around the...
- A.
  
  Stars
- B.
  
  Sun
- C.
  
  Moon
- D.
  
  Black Hole
Correct Answer
B. Sun

Explanation
The earth revolves around the sun due to the force of gravity. The sun's gravitational pull keeps the earth in its orbit, causing it to move in a circular path around the sun. This phenomenon is known as revolution and it takes approximately 365.25 days for the earth to complete one revolution around the sun, resulting in a year. The sun is the central celestial body in our solar system and its immense mass and gravitational force play a crucial role in the earth's orbit and overall stability.

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14
1
5.

What is the third planet from the sun?
- A.
  
  Venus
- B.
  
  Pluto
- C.
  
  Mercury
- D.
  
  Earth
Correct Answer
D. Earth

Explanation
The third planet from the sun is Earth.

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20
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6.

What planet is the fastest moving planet?
- A.
  
  Earth
- B.
  
  Mercury
- C.
  
  Jupiter
- D.
  
  Neptune
Correct Answer
B. Mercury

Explanation
Mercury is the correct answer because it is the planet closest to the Sun, which means it has the shortest orbital period. It takes only about 88 Earth days for Mercury to complete one orbit around the Sun, making it the fastest moving planet in our solar system.

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11
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7.

What is the coldest planet in the solar system?
- A.
  
  Uranus
- B.
  
  Earth
- C.
  
  Pluto
- D.
  
  Venus
Correct Answer
A. Uranus

Explanation
While Neptune is generally considered the coldest planet in terms of average surface temperature, Uranus does indeed hold the record for the lowest temperature ever recorded in the Solar System. The temperature of -224°C (-371°F) was measured by the Voyager 2 spacecraft during its flyby of Uranus in 1986. This extreme cold is thought to be caused by the planet's unusual axial tilt, which causes one hemisphere to experience continuous darkness for part of its 84-year-long orbit around the Sun.

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8
0
8.

What planet is 70% covered by water?
- A.
  
  Neptune
- B.
  
  Pluto
- C.
  
  Earth
- D.
  
  Jupiter
Correct Answer
C. Earth

Explanation
Earth is the correct answer because it is known as the "Blue Planet" due to its extensive water coverage. Approximately 70% of Earth's surface is covered by water, including oceans, seas, lakes, and rivers. This water plays a crucial role in supporting various ecosystems and is essential for sustaining life on the planet.

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13
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9.

Which planet is also called the red planet?
- A.
  
  Earth
- B.
  
  Mars
- C.
  
  Venus
- D.
  
  Saturn
Correct Answer
B. Mars

Explanation
Mars is often referred to as the red planet due to its reddish appearance. This is caused by the iron oxide (rust) on its surface, giving it a distinct reddish color. Mars is the fourth planet from the Sun and is known for its similarities to Earth, such as having seasons, polar ice caps, and a thin atmosphere. Its reddish hue has fascinated scientists and astronomers for centuries, making it a well-known nickname for the planet.

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6
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10.

What is the largest planet in the solar system?
- A.
  
  Neptune
- B.
  
  Jupiter
- C.
  
  Uranus
- D.
  
  Mars
Correct Answer
B. Jupiter

Explanation
Jupiter is the largest planet in the solar system. It has a diameter of about 143,000 kilometers, making it more than 11 times the size of Earth. Jupiter's size is due to its massive atmosphere, which is composed mostly of hydrogen and helium. Its immense size and strong gravitational pull have also allowed it to gather a large number of moons, with a total of 79 known moons orbiting around it. Jupiter's size and composition make it a fascinating and unique planet within our solar system.

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5
0
11.

What is Ganymede
- A.
  
  Asteroid
- B.
  
  Largest comet to hit the earth
- C.
  
  Earth's nearest star
- D.
  
  Largest moon of our solar system
Correct Answer
D. Largest moon of our solar system

Explanation
Ganymede is the largest moon in our solar system. It is one of Jupiter's moons and is even larger than the planet Mercury. Ganymede has a diameter of about 5,268 kilometers, making it larger than Earth's moon. It is composed mainly of rock and ice, and scientists believe that it may have a subsurface ocean of liquid water. Ganymede is an intriguing celestial body and has been the subject of extensive study by astronomers.

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8
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12.

Which planet is called the blue planet?
- A.
  
  Earth
- B.
  
  Mars
- C.
  
  Saturn
- D.
  
  Venus
Correct Answer
A. Earth

Explanation
Earth is called the blue planet because it appears blue from space due to the presence of water on its surface. The reflection and scattering of sunlight by the Earth's atmosphere causes the blue color. The oceans and lakes on Earth also contribute to its blue appearance, as water absorbs colors in the red part of the spectrum and reflects blue light. This distinct characteristic sets Earth apart from other planets in our solar system, making it known as the blue planet.

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4
0
13.

Which planet is called the evening star?
- A.
  
  Venus
- B.
  
  Mars
- C.
  
  Jupiter
- D.
  
  Mercury
Correct Answer
A. Venus

Explanation
Venus is referred to as the evening star because it is often visible in the evening sky after sunset. This is due to its position in the solar system and its orbit around the Sun. Venus is the second planet from the Sun and is closer to it than Earth, which allows it to be seen in the evening when the Sun has set. Its brightness and proximity to Earth also contribute to its visibility in the night sky.

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17
0

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Current Version
Oct 23, 2024

Quiz Edited by
ProProfs Editorial Team
Nov 03, 2009

Quiz Created by
Alisonmakepeace

8th Grade Planets And Space Quiz

What is the furthest planet from the sun?

How many days does it take the earth to travel around the sun?

What is the largest planet in the solar system?

The earth revolves around the...

What is the third planet from the sun?

What planet is the fastest moving planet?

What is the coldest planet in the solar system?

What planet is 70% covered by water?

Which planet is also called the red planet?

What is the largest planet in the solar system?

What is Ganymede

Which planet is called the blue planet?

Which planet is called the evening star?