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Inner Planets Questions - All Grades

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Grade 5 Inner Planets
Earth is the largest planet.
  1. True
  2. False
Grade 2 Inner Planets
What is the closest planet to the Sun?
  1. Venus
  2. Earth
  3. Mercury
  4. Jupiter
Grade 2 Inner Planets
The planet in the solar system that is closest to the Sun.
  1. Earth
  2. Mercury
  3. Mars
Grade 3 Inner Planets
Which planet is the hottest in the solar system?
  1. Venus
  2. Earth
  3. Mercury
  4. Uranus
Grade 5 Inner Planets
Which of these characteristics relate to the inner planets?
  1. The inner planets have a higher density than the outer planets.
  2. The inner planets have many moons compared to the outer planets.
Grade 6 Inner Planets
What are the four terrestrial planets?
  1. Mars, Pluto, Jupiter, Ceres
  2. Uranus, Neptune, Jupiter Saturn
  3. Mercury, Venus, Earth, Mars
  4. Mercury, Venus, Earth, Pluto
Grade 6 Inner Planets
Venus doesn't have any moons.
  1. True
  2. False
Grade 10 Inner Planets
Mars is 1.5 astronomical units from the sun. If the planets are lined up like the image below, which of the following is true? (The image below may not be to scale)
  1. Earth is always closer to the Sun then it is to Mars.
  2. Mars is twice the distance to the Sun then Earth is.
  3. Mars is half the distance to Earth then the Earth is to the Sun.
  4. Mars is 1.5 light years away from the Earth.
Grade 6 Inner Planets
Which of these is not one of the inner planets?
  1. Earth
  2. Uranus
  3. Venus
  4. Mercury
Grade 5 Inner Planets
The diameter of Mercury is about                            .
  1. 3,000 miles.
  2. 30,000 miles.
  3. 93,000,000 miles.
  4. 100 times Earth's diameter.
Grade 8 Inner Planets
What is Earth's tilt on its axis?
  1. About 23.5 degrees
  2. About 60.7 degrees
  3. About 26.6 degrees
  4. About 80.4 degrees
Grade 4 Inner Planets
Earth has one moon.
  1. True
  2. False
Grade 6 Inner Planets
Which statement about the inner planets is TRUE?
  1. All inner planets are mostly covered with water.
  2. The inner planets have common types of rocky landforms such as mountains and volcanoes.
  3. Earth is the hottest inner planet.
  4. The inner planets all have thick, very protective atmospheres.
Grade 6 Inner Planets
Which four letters represent terrestrial planets on the solar system diagram shown?
Solar System
  1. A, B, C, D
  2. B, C, D, E
  3. E, F, G, H
  4. F, G, H, I
Grade 6 Inner Planets
Which planet in our solar system is the smallest?
  1. Saturn
  2. Mars
  3. Earth
  4. Mercury
Grade 5 Inner Planets
Venus rotates counterclockwise.
  1. True
  2. False
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