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Eighth Grade (Grade 8) Solar System Questions

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Grade 8 Inner Planets
Earth is the only planet in the solar system that has
  1. clouds.
  2. a solid core.
  3. oceans of liquid water.
  4. a thick atmosphere.
Grade 8 The Moon
What is the Moon called when light fully illuminates the whole side facing Earth?
  1. Full moon
  2. New moon
  3. Third quarter
  4. Waxing gibbous
Grade 8 The Moon
Which of the following is true about the Moon?
  1. It has no gravity at all.
  2. It has a constant surface temperature.
  3. It has an extremely thin atmosphere.
  4. It has liquid water.
Grade 8 Planetary Motion
Earth's axis is tilted with respect to Earth's orbit at an angle of
  1. 90 degrees.
  2. 45 degrees.
  3. 23.4 degrees.
  4. 5.5 degrees.
Grade 8 Planetary Motion
The spin of Earth is known as
  1. revolution.
  2. rotation.
  3. evolution.
  4. seasonal.
Grade 8 Sun
Where does the nuclear fusion process occur?
  1. the core
  2. the radiation zone
  3. the convection zone
  4. the Sun's atmosphere
Grade 8 The Moon
What results when the Moon is in Earth's umbra?
  1. a total solar eclipse
  2. a total lunar eclipse
  3. a partial solar eclipse
  4. a partial lunar eclipse
Grade 8 Planetary Motion
If it is summer in the Northern Hemisphere, which statement is true?
  1. Earth has changed the tilt of its axis by 20 degrees due to its revolution.
  2. It is winter in the Southern Hemisphere due to the tilt of Earth's axis.
  3. It is summer in the Southern Hemisphere due to the tilt of Earth's axis.
  4. Earth has reached its closest point to the Sun due to its revolution.
Grade 8 The Moon
What phase of the Moon is larger than a semi-circle, but not a complete circle of light?
  1. Gibbous Moon
  2. New Moon
  3. Crescent Moon
  4. Three Quarter Moon
Grade 8 The Moon
What results when the Moon is in Earth's umbra?
  1. a partial lunar eclipse
  2. a partial solar eclipse
  3. a total solar eclipse
  4. a total lunar eclipse
Grade 8 Small Bodies and Dwarf Planets
Pluto is an example of a(n)
  1. dwarf planet.
  2. inner planet.
  3. outer planet.
  4. planetesimal.
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 8 The Moon
The phase of the Moon that follows the waning gibbous is called the
  1. first quarter.
  2. third quarter.
  3. new moon.
  4. full moon.
Grade 8 Outer Planets
Which of the following planets is the largest?
  1. Mercury
  2. Earth
  3. Jupiter
  4. Neptune
Grade 8 Planetary Motion
What shape does an ellipse most resemble?
  1. circle
  2. triangle
  3. oval
  4. sphere
Grade 8 The Moon
According to the collision theory, the Moon is made                                                                        .
  1. of material both from an object that struck Earth and from Earth itself
  2. only of material from a large object that struck Earth
  3. only of material thrown off from Earth itself
  4. only of ice contained in ancient meteoroids
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