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Basic Astronomy MCQ

1. The habitable zone refers to ________.

Between the orbit of Venus and the orbit of Earth

Both an orbit within the habitable zone and a size large enough to retain substantial internal heat

The water molecules were destroyed, and the hydrogen atoms escaped to space.

The range of distances from a star within which a planet could potentially have surface oceans of liquid water

Answer

Correct Answer: The range of distances from a star within which a planet could potentially have surface oceans of liquid water

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2. The debris from a supernova explosion is called a supernova _________.

Remnant

Nebula

Shockwave

Burste.

Answer

Correct Answer: Remnant

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3. In addition to earth, the planet ________ shows clear evidence of water erosion.

Moon

Mars

Helium

Galaxy

Answer

Correct Answer: Mars

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4. The axes on a hertzsprung-russell (h-r) diagram represent _________.

Luminosity and surface temperature

Mass and age

Its size (radius)

Larger than that of star b

Answer

Correct Answer: Luminosity and surface temperature

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5. When we see a meteor shower, it means that ________.

Earth is crossing the orbit of a comet

The planet must be closer to the star than Earth is to the Sun.

The Sun's mass is about 300,000 times the mass of the Earth.

It is a little less than half the diameter of our Moon.

Answer

Correct Answer: Earth is crossing the orbit of a comet

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6. A zero-age main-sequence star is one that can __________.

Sustain thermonuclear reactions in its core.

Converting hydrogen into helium

More mass and a shorter lifetime

Less mass and a longer lifetime

Answer

Correct Answer: Sustain thermonuclear reactions in its core.

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7. The astrology practiced by those who cast predictive horoscopes can be tested by __________

Comparing how often the predictions come true to what would be expected by pure chance.

Asking astrologers if it works.

Counting how many times the predictions come true

Polling people to find out what percentage believe their horoscopes to be accurate.

Answer

Correct Answer: Comparing how often the predictions come true to what would be expected by pure chance.

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8. The area of the earth reached by a satellites transmission is referred to as its _____.

Footprint

Fishprint

Geostationary

Examine

Answer

Correct Answer: Footprint

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9. Stars with masses less than ____ produce most of their energy via the proton-proton chain.

0.1 solar masses

1.101 solar masses

0.01 solar masses

1.1 solar masses

Answer

Correct Answer: 1.1 solar masses

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10. If a star is large, it will remain in the main sequence _____ a small star.

For

As long

As longer than

Shorter than

Answer

Correct Answer: Shorter than

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11. If a star has a low luminosity and also a high surface temperature then it must have __________.

A small radius

A medium radius

A large radius

All the above sizes

Answer

Correct Answer: A small radius

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12. For los angeles, during the autumnal equinox there are about _____ hours of daylight.

Answer

Correct Answer: 12

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13. By examining the widths of the spectral lines we can find information about a star's _________.

Parallax

Lower

Rotation

Sequence

Answer

Correct Answer: Rotation

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14. Galileo challenged the idea that objects in the heavens were perfect by ________.

Observing sunspots on the Sun and mountains on the Moon

Showing that heavy objects fall at the same rate as lighter objects

Inventing the telescope

Proving Kepler's laws were correct

Answer

Correct Answer: Observing sunspots on the Sun and mountains on the Moon

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15. We never see a crescent jupiter from earth because jupiter __________.

Shines with its own light.

Is farther than Earth from the Sun.

Does not go around Earth.

Orbits the Sun in the same direction as Earth.

Answer

Correct Answer: Is farther than Earth from the Sun.

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16. The first humans arose ________ the last dinosaurs.

More than 60 million years after

About 100 million years after

Almost immediately after the extinction of

Shortly before the extinction of

Answer

Correct Answer: More than 60 million years after

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17. The sun reaches the zenith (directly overhead) at midday ___________.

Everywhere in the Southern Hemisphere on the December solstice

On the equator only on the March and September equinoxes

On the Arctic circle (66.5°N) on the June solstice

On the equator every day

Answer

Correct Answer: On the equator only on the March and September equinoxes

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18. The virgin galactic will soon _____.

Offer rides into space

Be launched beyond the solar system

House people on Mars

Send back data from the edge of the Milky Way

Answer

Correct Answer: Offer rides into space

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19. The stars in our sky twinkle in brightness and color because of _________.

Rapid changes in the brightnesses and colors of stars caused by changes in their spectra

Turbulence in earth's atmosphere

The bubbling and boiling of gases on the surfaces of stars

Light pollution

Answer

Correct Answer: The bubbling and boiling of gases on the surfaces of stars

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20. The james webb space telescope is designed primarily to observe __________.

UV Light

Gamma rays

Visible Light

Infrared Light

Answer

Correct Answer: Infrared Light

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21. The interstellar clouds called molecular clouds are _______.

The cool clouds in which stars form

Opaque because of its internal dust grains

Both of these

None of these

Answer

Correct Answer: Both of these

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22. The sum of the characteristics that hold a mass in place is referred to as __________.

Shear resistance

170 km (105 mi)

West Virginia

Die of suffocation

Answer

Correct Answer: Shear resistance

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23. Earth ranks _____ in the Solar System away from the Sun.

5th

4th

6th

3rd

Answer

Correct Answer: 5th

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24. Planet with nearly equal rotation and revolution time to the earth is _____.

Venus

Mercury

Uranus

Mars

Answer

Correct Answer: Venus

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25. Planet nearest to the earth is _____.

Venus

Mercury

Mars

Jupiter

Answer

Correct Answer: Venus

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26. Sun revolves around galaxy once in every 250 million years, this length of time is called _____.

Cosmic or Galactic Year

Mean Solar Year

Sidereal Year

Leap Year

Answer

Correct Answer: Cosmic or Galactic Year

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27. Big Bang Theory' explains

The formation of universe

The origin and evolution of earth's crust

Formation of Solar System

Formation of constellation

Answer

Correct Answer: The formation of universe

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28. The word 'satellite' means _____.

wanderer

settlement

light

a smaller companion to anything

Answer

Correct Answer: a smaller companion to anything

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29. A swarm of small bodies in between the two Planets of Solar System is called 'asteroids' which are those two Planets?

Mars and Jupiter

Earth and Venus

Neptune and Pluto

Jupiter and Saturn

Answer

Correct Answer: Mars and Jupiter

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30. A celestial body which revolves round the Sun and receives heat and light from it is called _____.

Planet

Orion

Satellite

Star

Answer

Correct Answer: Planet

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31. A celestial body which revolves round a planet just as a planet revolves round the Sun is called _____.

A Moon

B Asteroid

C Satellite

D Great Bear

Answer

Correct Answer: C Satellite

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32. A celestial body having its own heat and light is called

Planet

Moon

Star

Satellite

Answer

Correct Answer: Star

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33. The word 'planet' means ____.

wanderer

pollution

celestial body

heavenly body

Answer

Correct Answer: wanderer

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34. How many planets does our Solar System consist of?

Answer

Correct Answer: 9

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35. Our Solar System is an orderly community of _____.

One star

Two stars

Three stars

Four stars

Answer

Correct Answer: One star

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36. Orion and Great Bear stand for ______.

star

planet

Solar System

Constellation

Answer

Correct Answer: Constellation

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37. What is the shape of our galaxy 'Milky Way'?

spiral

elliptical

circular

spherical

Answer

Correct Answer: spiral

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38. The name of our galaxy is _______

A Alfa Centauri

B Proxima Centauri

C Milky Way

D Neptune

Answer

Correct Answer: C Milky Way

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39. A system of millions and millions of galaxies are called _____.

Solar System

Universe

Space

Constellation

Answer

Correct Answer: Universe

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40. A family or system of millions and millions of stars are called ____.

Universe

Solar System

Galaxy

Asteroids

Answer

Correct Answer: Universe

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41. Charon is the satellite of _____.

Earth

Saturn

Pluto

Neptune

Answer

Correct Answer: Pluto

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42. Hale Bopp is a newly discovered ____.

Planet

Meteore

Satellite

Comet

Answer

Correct Answer: Comet

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43. Brightest planet of our Solar System is _____.

Venus

Mercury

Uranus

Saturn

Answer

Correct Answer: Venus

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44. Smallest planet of our Solar System is _____.

Pluto

Earth

Venus

Mercury

Answer

Correct Answer: Pluto

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45. Largest planet of our Solar System is _____.

Jupiter

Mars

Saturn

Uranus

Answer

Correct Answer: Jupiter

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46. Sun-rays reaches earth in (approximately)

8 seconds

8 minutes

4.3 seconds

1 light year

Answer

Correct Answer: 8 minutes

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47. Largest satellite in Solar System is ____.

Moon

Ganymede

Europa

Cheron

Answer

Correct Answer: Ganymede

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48. Which planet is called "Double Planet"?

Venus

Uranus

Pluto

Earth

Answer

Correct Answer: Pluto

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49. Which planet is called "red planet"?

Mars

Jupiter

Mercury

Venus

Answer

Correct Answer: Mars

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50. Planet with maximum satellites is _____.

Earth

Saturn

Jupiter

Pluto

Answer

Correct Answer: Saturn

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51. Presently the farthest planet from the Sun is _____.

Pluto

Neptune

Uranus

Venus

Answer

Correct Answer: Pluto

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52. Nearest star to the earth is _____.

Alfa Centaury

Sun

Proxima Centaury

Dog Star

Answer

Correct Answer: Sun

Note: This Question is unanswered, help us to find answer for this one

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