An Easy Quiz on Astronomy

Physics - Astronomy

Here is an easy quiz on astronomy. There are ten questions. The quiz is not timed.

Good luck.

1 / 10

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

A. The average distance between the Sun and the Earth.

B. One Light-year is sometimes called AU.

C. The distance between the Sun and the Kuiper belt.

D. The distance between the Earth and the Moon.

2 / 10

2. The planet that is closest to the sun is:

A. Venus

B. Uranus

C. Mercury

3 / 10

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

A. Titan

B. Pluto

C. Uranus

D. Neptune

4 / 10

4. 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.

A. False

B. True

5 / 10

5. The nearest star to Earth (other than the Sun) is:

A. Titan

B. Alpha Centauri B

C. Proxima Centauri

D. Alpha Centauri A

6 / 10

6. 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.

A. False

B. True

7 / 10

7. Though several minor galaxies lie around our home (Milky Way) galaxy, Andromeda is the nearest major spiral galaxy. How far Andromeda galaxy is from our Earth?

A. About 25 million light-years

B. 20,000 light-years

C. 20,000 AU

D. About 2.5 million light-years

8 / 10

8. Why do we always see the near side of our Moon?

A. Because the Sun light falls only on the near side of the Moon and the other side is always dark.

B. Because Moon is tidally locked to Earth and its rotation is synchronized with its revolution around Earth.

C. Because its orbital plane is inclined by 5 degrees.

D. Because Moon has no rotation, consequently there is no day or night for the Moon.

9 / 10

9. Asteroid belt is located between the orbits of:

A. Earth and Mars

B. Mars and Jupiter

C. Jupiter and Saturn

D. Mercury and Venus

10 / 10

10. Our solar system formed about:

A. 4.6 million years ago

B. 4000 years ago

C. 4.6 billion years ago

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The average score is 91%

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