What do you know about the sun? Test your knowledge with these MCQs.

1. What is the sun primarily composed of?

Hydrogen and helium

Oxygen and nitrogen

Carbon and iron

Mercury and sulfur

2. What is the approximate age of the sun?

1 million years

1 billion years

4.6 billion years

10 billion years

3. What is the temperature at the core of the sun?

5,000 degrees Celsius

10,000 degrees Celsius

15 million degrees Celsius

100 million degrees Celsius

4. How does the sun produce energy?

Nuclear fusion

Nuclear fission

Chemical reactions

Electromagnetic radiation

5. What is the outermost layer of the sun’s atmosphere called?

Photosphere

Chromosphere

Corona

Mesosphere

6. How long does it take for sunlight to reach the Earth?

Instantaneously

8 minutes and 20 seconds

1 hour

1 day

7. What is the phenomenon that causes the sun to appear reddish during sunrise and sunset?

Refraction

Reflection

Scattering

Absorption

8. What is a solar flare?

A sudden increase in the sun’s brightness

A burst of high-energy particles from the sun’s surface

A temporary decrease in solar activity

A gravitational disturbance caused by the sun’s mass

9. Which of the following is a result of solar flares interacting with Earth’s atmosphere?

Aurora borealis (northern lights)

Tidal waves

Earthquakes

Hurricanes

10. What is the sun’s magnetic field known as?

Solar wind

Solar magnetosphere

Solar corona

Solar prominence

11. What is the average distance between the Earth and the sun?

93 million miles (150 million kilometers)

23 million miles (37 million kilometers)

1 million miles (1.6 million kilometers)

500,000 miles (800,000 kilometers)

12. How many Earths could fit inside the sun?

100

1,000

1 million

1 billion

13. What is the sunspot cycle?

A cycle of high and low solar activity that lasts approximately 11 years

The time it takes for a sunspot to move across the sun’s surface

The periodic dimming of the sun’s brightness

The rotation of the sun on its axis

14. What are sunspots?

Dark spots on the sun’s surface caused by magnetic activity

Areas of the sun that are hotter than the surrounding regions

Solar flares that occur near the sun’s equator

Volcanic eruptions on the sun’s surface

15. Which of the following is NOT a layer of the sun’s interior?

Core

Mantle

Radiative zone

Convective zone

16. What is the sun’s role in the formation of the solar system?

It is the central gravitational force that pulled matter together to form the planets.

It is a byproduct of the formation of the planets.

It was formed independently of the solar system.

It has no role in the formation of the solar system.

17. What is the sun’s approximate diameter?

1,000 kilometers

10,000 kilometers

100,000 kilometers

1 million kilometers

18. What is the sun’s approximate mass compared to Earth’s mass?

10 times larger

100 times larger

1,000 times larger

10,000 times larger

19. What is the name of the mission launched by NASA to study the sun up close?

Solar Voyager

Sun Explorer

Solar Probe Plus

Sun Sentinel

20. Which of the following statements about the sun is true?

It will eventually shrink into a black hole.

It will burn out and become a white dwarf.

It will explode in a supernova.

It will continue to shine for billions of years as a main sequence star.

E-Quiz Book

What do you know about the sun? Test your knowledge with these MCQs.

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