Solar system Quiz

1. Though Venus is the second planet, its surface temperature is greater than the planet Mercury which is orbiting close to the sun. That is due to the greenhouse effect caused by the presence of huge amount of carbon dioxide in the atmosphere of Venus.

2. Astronomers sometimes use the AU (Astronomical Unit) to communicate the distance between celestial objects. One AU is defined as:

3. What is going on at the center of the Sun (or in any star) is known as nuclear fusion (hydrogen atoms are fused together to make helium). In this process huge amount of energy is released.

4. Ganymede, one of the Galilean moons of Jupiter, is the largest of all the moons in the solar system. It is even bigger than the planet Mercury.

5. On these two planets, the Sun rises in the west and sets in the east. These two planets are:

6. On these two planets, the day is longer than its year. These two planets are:

7. Asteroid belt is located between the orbits of:

8. The planet Saturn's spectacular rings are made of:

9. From 2006, this object, in the solar system, is not considered a planet; It is now classified as a dwarf planet. That object is:

10. Our solar system formed about: