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Quiz Chapter 12: Solar System

10 questions · Form 2 Science Bab 12: Solar System

Question 1 of 10Score: 0

What primary feature gives Mars its characteristic reddish appearance?

Full Question List & Answer Key

Prefer reading to quizzing? All 10 questions are listed below with the answer and explanation under each one.

1. What primary feature gives Mars its characteristic reddish appearance?

  1. Liquid lava lakes across its surface
  2. High concentrations of iron oxide (rust) dust on its surface
  3. Red atmospheric clouds of sulfur dioxide
  4. Reflected sunlight from copper mountain ranges
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Answer: B

Mars' surface is covered in soil and rocks rich in iron oxide (rust), giving the planet its reddish color.

2. Which planet is the closest to the Sun in our Solar System?

  1. Venus
  2. Mercury
  3. Mars
  4. Earth
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Answer: B

Mercury is the first planet from the Sun at an average distance of about 58 million kilometers.

3. What is the primary role of Earth's magnetosphere in protecting life?

  1. It generates gravity to keep oceans from floating away
  2. It deflects harmful solar winds and cosmic charged particles away from Earth
  3. It prevents meteorites from entering the atmosphere
  4. It maintains constant global atmospheric pressure
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Answer: B

Earth's magnetic field (magnetosphere) deflects high-energy solar winds and cosmic radiation, preserving our atmosphere.

4. Which natural phenomenon occurs when solar wind particles interact with Earth's magnetic field near the polar regions?

  1. Solar eclipses
  2. Auroras (Northern and Southern Lights)
  3. Tsunami waves
  4. Meteor showers
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Answer: B

Auroras occur when solar wind particles collide with atmospheric gases near Earth's magnetic poles, producing glowing curtains of light.

5. Which planet is famous for rotating almost completely on its side with an axial tilt of about 98 degrees?

  1. Uranus
  2. Saturn
  3. Mars
  4. Venus
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Answer: A

Uranus has an extreme axial tilt of approximately 98°, causing it to rotate virtually on its side relative to its orbital plane.

6. Which planet in the Solar System possesses the LARGEST mass and strongest gravitational pull?

  1. Saturn
  2. Neptune
  3. Jupiter
  4. Earth
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Answer: C

Jupiter is the largest planet, containing more than double the combined mass of all other planets, giving it the strongest gravitational pull.

7. Which group contains ONLY Terrestrial (inner) planets?

  1. Jupiter, Saturn, Uranus, Neptune
  2. Mercury, Venus, Earth, Mars
  3. Mercury, Earth, Jupiter, Saturn
  4. Mars, Jupiter, Uranus, Neptune
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Answer: B

The four inner planets (Mercury, Venus, Earth, Mars) are terrestrial planets characterized by solid, rocky surfaces.

8. Which gas makes up the majority of Earth's atmosphere (~78%)?

  1. Oxygen
  2. Carbon dioxide
  3. Nitrogen
  4. Argon
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Answer: C

Earth's atmosphere consists of approximately 78% nitrogen, 21% oxygen, and 1% trace gases.

9. What would happen to Earth's surface temperature if all greenhouse gases were completely removed from the atmosphere?

  1. Surface temperature would remain completely unchanged
  2. Earth would become extremely hot like Venus
  3. Average surface temperature would drop drastically below freezing point (~ -18°C)
  4. Oceans would boil off into space
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Answer: C

Without a natural greenhouse effect, Earth would lose heat rapidly, causing global temperatures to drop to around -18°C, freezing water completely.

10. Which planet has the LEAST amount of atmosphere among the eight planets?

  1. Mercury
  2. Venus
  3. Earth
  4. Mars
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Answer: A

Mercury is too small and hot to hold a substantial atmosphere, possessing only a trace exosphere of atoms blasted off its surface by solar wind.

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