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Ninth Grade (Grade 9) Astronomy Questions

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Grade 9 Universe
Grade 9 Planetary Motion
Grade 9 Universe
Grade 9 Solar System
The solar system is includes
  1. the stars in our galaxy.
  2. the Sun, planets, and their moons.
  3. the planets and moons.
  4. the Sun, stars, moons, and planets.
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 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
What is the name of the region beyond Neptune's orbit where icy bodies lie?
  1. The Kuiper Belt
  2. The Oort Cloud
  3. The Outer Asteroid Belt
  4. All of the Above
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 Universe
Grade 9 Stars

This question is a part of a group with common instructions. View group »

The process in which smaller atomic nuclei combine into large atomic nuclei is known as
  1. gravitational attraction.
  2. parallax.
  3. nuclear fusion.
  4. the Doppler effect.
Grade 9 Planetary Motion
The gravitational attraction between Sun, Moon, and Earth
  1. causes tides.
  2. causes seasons to change.
  3. causes a full moon.
Grade 9 Sun
What lies at the center of our solar system?
  1. the Sun
  2. Mars
  3. Earth
  4. the Moon
Grade 9 Inner Planets
Grade 9 Universe
What were the first elements made after the Big Bang?
  1. Hydrogen & Helium
  2. Hydrogen & Lithium
  3. Helium & Oxygen
  4. Helium & Argon
Grade 9 Planetary Motion
How long does it take Earth to complete a rotation?
  1. 29.5 days
  2. 365.25 days
  3. 24 hours
  4. 72 hours
Grade 9 Planetary Motion
The Moon moves in a line directly between Earth and the Sun, casting a shadow on Earth.
  1. Solar Eclipse
  2. Lunar Eclipse
  3. Winter Solstice
  4. Earth Eclipse
Grade 9 Planetary Motion
What is an eclipse of the Moon, when the Moon passes through Earth’s shadow.
  1. Solar Eclipse
  2. Lunar Eclipse
  3. Summer Solstice
  4. Earth Eclipse
Grade 9 Stars
Which area of Earth Science includes the study of stars?
  1. meteorology
  2. hydrology
  3. geology
  4. astronomy
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