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SPACE SCIENCE MCQs

Total Questions : 50 | Page 3 of 5 pages
Question 21. How long does earth's rotation last?
  1.    90 hours
  2.    about 1 hour
  3.    24 hours
  4.    48 hours
 Discuss Question
Answer: Option C. -> 24 hours
Question 22. Which planets are the outer planets?
  1.    Mercury, Venus, Earth, Mars
  2.    Saturn, Uranus, Neptune, Plute
  3.    Mars, Jupiter, Saturn, Neptune
  4.    Jupiter, Saturn, Uranus, Neptune
 Discuss Question
Answer: Option D. -> Jupiter, Saturn, Uranus, Neptune
Question 23. What is the correct image scale for an image that covers a real life 25 Km but the photograph is 100 mm wide?
  1.    4 km/mm
  2.    .4 km/mm
  3.    400 km/mm
  4.    40 km/mm
 Discuss Question
Answer: Option B. -> .4 km/mm
Question 24. What object(s) contains more than 99% of the mass in our Solar System?
  1.    Jupiter
  2.    Sun
  3.    Uranus
  4.    The Asteroid Belt
 Discuss Question
Answer: Option B. -> Sun
Question 25. Which planets are known as gas giants?
  1.    Jupiter, Saturn, Mars, Neptune
  2.    Jupiter, Saturn, Uranus, Neptune
  3.    Mercury, Venus, Earth, Mars
  4.    Mercury, Venus, Earth, Uranus
 Discuss Question
Answer: Option B. -> Jupiter, Saturn, Uranus, Neptune
Question 26. Which action causes day to turn to night?
  1.    The moon casts a shadow.
  2.    The moon orbits earth.
  3.    Earth orbits the sun.
  4.    Earth rotates on its axis
 Discuss Question
Answer: Option D. -> Earth rotates on its axis
Question 27. When does a lunar eclipse occur?
  1.    When the Earth's shadow is cast on the moon
  2.    When the moon's shadow is cast on Earth
  3.    When the moon's shadow is cast on the Sun
  4.    When the Sun's shadow is cast on Earth
 Discuss Question
Answer: Option A. -> When the Earth's shadow is cast on the moon
Question 28. It is a clear, dark night
  1.    Light from the stars makes it hard to see the moon.
  2.    There is a star or planet blocking the moon
  3.    The side of the moon that's lit up is facing away from the earth. 
  4.    Earth is blocking the sunlight that ordinarily reaches the moon
 Discuss Question
Answer: Option D. -> Earth is blocking the sunlight that ordinarily reaches the moon
Question 29. Why is the water cycle important?
  1.    It cools the Earth
  2.    It provides us with clean water
  3.    It looks cool when it rains
  4.    Thunder is loud
 Discuss Question
Answer: Option B. -> It provides us with clean water
Question 30. Day and night is caused by the _____________ of earth on its axis
  1.    revolution
  2.    orbit
  3.    rotation
 Discuss Question
Answer: Option C. -> rotation

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