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Ninth Grade (Grade 9) Solar System Questions

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Grade 9 Planetary Motion
What do changes in Earth's orbit affect most greatly?
  1. Earth's shape
  2. Earth's temperatures
  3. Earth's rotation
  4. Earth's tilt
Grade 9 Planetary Motion
The apparent rising and setting of the Sun, as viewed from Earth, is caused by
  1. Earth's rotation.
  2. Earth going around the Sun.
  3. the Sun going around Earth.
Grade 9 Outer Planets
What is Saturn's most prominent feature?
  1. moon system
  2. ring system
  3. giant storm
  4. liquid oceans
Grade 9 Sun
What is the correct order of the layers of the Sun's atmosphere in order of innermost layer to outermost layer?
  1. corona, photosphere, chromosphere
  2. photosphere, corona, chromosphere
  3. photosphere, chromosphere, corona
  4. chromosphere, photosphere, corona
Grade 9 Sun
A dark spot on the Sun, which is cool by contrast to the surrounding photosphere.
  1. Solar Wind
  2. Solar Flare
  3. Sun Darkening
  4. Sunspot
Grade 9 Planetary Motion
What is represented by the diagram below?
Neap Tide
  1. neap tide
  2. spring tide
  3. solar eclipse
  4. lunar eclipse
Grade 9 The Moon
How long does the lunar cycle last?
  1. 7 days
  2. 14.75 days
  3. 29.5 days
  4. 45 days
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 Earth.
  2. Mercury revolves faster than Earth.
  3. Earth is farther from the Sun than Mercury.
  4. Earth has a lower orbital eccentricity than Mercury.
Grade 9 Planetary Motion
Earth rotates once on its axis about every                .
  1. hour
  2. 27-1/2 days
  3. 24 hours
  4. 12 months
Grade 9 Small Bodies and Dwarf Planets
What is an asteroid made of?
  1. rock and carbon
  2. rock and ice
  3. rock and lava
  4. rock and precious metal
Grade 9 The Moon
The Moon is about                 the size of Earth.
  1. one-tenth
  2. one-fourth
  3. one-half
  4. one-fifth
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 Inner Planets
The biggest volcano in the solar system is on which planet?
  1. Io
  2. Jupiter
  3. Venus
  4. Mars
Grade 9 The Moon
How many moons does Earth have?
  1. 6
  2. 3
  3. 2
  4. 1
Grade 9 Outer Planets
Which gas gives the planets shown below their color?
Planet Neptune - SmallPlanet Uranus - Small
  1. nitrogen
  2. methane
  3. ammonia
  4. carbon dioxide
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