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Seventh Grade (Grade 7) Planetary Motion Questions

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Grade 7 Planetary Motion
What do you call a phenomenon wherein an object is spinning around its axis?
  1. orbit
  2. rotation
  3. revolution
  4. all of the above
Grade 7 Planetary Motion
What must happen for a solar eclipse to occur?
  1. The Moon must be directly behind the Sun.
  2. Earth must be directly between the Sun and the Moon.
  3. The Moon must be directly between Earth and the Sun.
  4. The Sun must be directly between Earth and the Moon.
Grade 7 Planetary Motion
The model of the solar system in which Earth and the other planets revolve around the Sun.
  1. geocentric
  2. equatorcentric
  3. heliocentric
  4. gaseouscentric
Grade 7 Planetary Motion
What is the model of the solar system in which the Sun and other planets revolve around Earth?
  1. geocentric
  2. equatorcentric
  3. heliocentric
  4. gaseouscentric
Grade 7 Planetary Motion
What does the term tidally locked mean?
  1. An object's same side is always facing that larger object
  2. An object spins freely
  3. The object does not rotate
  4. None of the above
Grade 7 Planetary Motion
Why does the yellow habitable zone line change?
  1. This is because the habitable zone is closer when there is a hotter star
  2. This is because the habitable zone is closer when there is a cooler star
  3. It does not. The habitable zone is the same throughout the universe
  4. None of the above.
Grade 7 Planetary Motion
The Moon orbits Earth at a slightly tilted angle compared to Earth's orbit around the Sun. This fact best accounts for which of the following?
  1. why there is a lunar eclipse every new moon
  2. why there is a solar eclipse every new moon
  3. why there is not a lunar eclipse every new moon
  4. why there is not a solar eclipse every new moon
Grade 7 Planetary Motion
Which is the best estimate of how frequently a total solar eclipse can be viewed from somewhere on Earth?
  1. once every 18 days
  2. once every 18 months
  3. once every 18 years
  4. once every 18 centuries
Grade 7 Planetary Motion
Which is the best estimate for how long totality lasts during a total solar eclipse?
  1. a few minutes
  2. a few hours
  3. a few days
  4. a few months
Grade 7 Planetary Motion
Imagine that gravitational force suddenly disappeared. Which best describes what Earth's path through space would look like?
  1. Earth would stop moving.
  2. Earth would move in a straight line through space.
  3. Earth would stop orbiting the Sun and start orbiting the other planets.
  4. There would be no change in Earth's path through space.
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