MCQ’s on Sun
1. What is the Sun?
a. A planet
b. A star
c. A moon
d. An asteroid
Answer: b. A star
2. Which planet is closest to the Sun?
a. Mars
b. Earth
c. Venus
d. Saturn
Answer: c. Venus
3. What is the Sun’s age estimated to be?
a. 5 billion years
b. 10 billion years
c. 20 billion years
d. 50 billion years
Answer: a. 5 billion years
4. What is the Sun primarily composed of?
a. Hydrogen and helium
b. Oxygen and nitrogen
c. Carbon and iron
d. Sodium and potassium
Answer: a. Hydrogen and helium
5. How does the Sun generate energy?
a. Through nuclear fusion
b. Through gravitational pull
c. Through chemical reactions
d. Through magnetic fields
Answer: a. Through nuclear fusion
6. How long does it take for light from the Sun to reach the Earth?
a. 5 minutes
b. 8 minutes
c. 10 minutes
d. 15 minutes
Answer: b. 8 minutes
7. What is the Sun’s surface temperature?
a. 2,000 degrees Celsius
b. 5,500 degrees Celsius
c. 10,000 degrees Celsius
d. 15,000 degrees Celsius
Answer: b. 5,500 degrees Celsius
8. What is the Sun’s mass relative to the Earth?
a. 10 times greater
b. 100 times greater
c. 1,000 times greater
d. 10,000 times greater
Answer: c. 1,000 times greater
9. How many planets in our solar system orbit around the Sun?
a. 7
b. 8
c. 9
d. 10
Answer: b. 8
10. What is the largest planet in our solar system?
a. Earth
b. Jupiter
c. Mars
d. Venus
Answer: b. Jupiter
11. What is the smallest planet in our solar system?
a. Mercury
b. Venus
c. Mars
d. Pluto
Answer: a. Mercury
12. What is the Sun’s role in the water cycle?
a. It has no role
b. It causes evaporation of water from oceans and lakes
c. It causes precipitation of rain and snow
d. It causes water to freeze into ice
Answer: b. It causes evaporation of water from oceans and lakes
13. What is a solar flare?
a. A sudden increase in the Sun’s brightness
b. A sudden decrease in the Sun’s brightness
c. A burst of radiation from the Sun’s surface
d. A storm on the Sun’s surface
Answer: c) A burst of radiation from the Sun’s surface
14. What is a sunspot?
a. A region on the Sun’s surface that is cooler than its surroundings
b. A region on the Sun’s surface that is hotter than its surroundings
c. A region on the Sun’s surface that is always dark
d. A region on the Sun’s surface that emits ultraviolet radiation
Answer: a. A region on the Sun’s surface that is cooler than its surroundings
15. What is the Sun’s magnetic field responsible for?
a.The formation of sunspots
b. The generation of solar flares
c. The creation of the solar wind
d. All of the above
Answer: d. All of the above