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Ninth Grade (Grade 9) Solar System Questions

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Grade 9 Planetary Motion
Planets that are close to the sun
  1. move through the asteroid belt.
  2. orbit faster than the outer planets.
  3. orbit slower than the outer planets.
  4. move closer and closer to the sun.
Grade 9 The Moon
A lunar eclipse can only occur during which phase of the moon?
  1. Quarter Moon
  2. New Moon
  3. Full Moon
  4. Crescent Moon
Grade 9 Planetary Motion
One day on Mercury is equal to about 59 Earth days. Which statement best explains this phenomena?
  1. Mercury rotates slower than the Earth.
  2. Mercury revolves faster than the Earth.
  3. Earth is farther from the sun than Mercury.
  4. Earth has a lower orbital eccentricity than Mercury.
Grade 9 Planetary Motion
How long does it take earth to complete one revolution?
  1. 29.5 days
  2. 365.25 days
  3. 24 hours
  4. 72 hours
Grade 9 The Moon
What phase of the moon is shown?
Moon Phase - Waxing Crescent
  1. first quarter
  2. waxing crescent
  3. waning gibbous
  4. new moon
Grade 9 Outer Planets
The rings of the planet pictured below are mainly
Planet Saturn - Small
  1. water ice.
  2. helium gas.
  3. liquid hydrogen.
  4. frozen carbon dioxide.
Grade 9 Outer Planets
These planets are also known as gas giants.
  1. Terrestrial planets
  2. Jovian planets
  3. Inferior planets
  4. Superior planets
Grade 9 Planetary Motion
What is represented by the diagram shown?
Neap Tide 2
  1. neap tide
  2. spring tide
  3. solar eclipse
  4. lunar eclipse
Grade 9 Sun
Grade 9 Inner Planets
Grade 9 Sun
Which phrase best describes the sun's age in its stellar life cycle?
  1. newborn
  2. young adult
  3. middle aged
  4. end of life
Grade 9 Planetary Motion
Grade 9 Planetary Motion
Grade 9 Inner Planets
When the solar system formed, which planets lost most of their gases to the sun?
  1. the inner planets
  2. the comets
  3. the outer planets
  4. the asteroids
Grade 9 Outer Planets
Which statement correctly compares the atmospheres of the Jovian planets and the Earth?
  1. They consist mostly of helium and hydrogen like the Earth's earliest atmosphere.
  2. They consist mostly of nitrogen and oxygen like the Earth's present day atmosphere.
  3. Unlike the Earth, the Jovian planets have no atmospheres.
  4. The Jovian planets have atmospheres, but they are much thinner than the Earth's atmosphere.
Grade 9 Inner Planets
The predominant component of the atmosphere of the planet pictured is
Planet Venus - Small
  1. oxygen.
  2. nitrogen.
  3. carbon dioxide.
  4. carbon monoxide.
Grade 9 Planetary Motion
What does the term equinox mean?
  1. equal day
  2. equal night
  3. equal year
  4. leap year
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