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REVIEW CH 7 & 8

Quiz by Don Walker

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21 questions
Show answers
  • Q1
    Which statement best explains why Earth and Venus are often called “sister planets”?
    They have matching surface features
    They have nearly the same size and overall bulk
    They have identical atmospheres
    They have similar rotation speeds
    30s
  • Q2
    How does Venus’s spin stand out compared with most other planets?
    It spins the opposite way it orbits the Sun
    It does not rotate at all
    It spins extremely fast
    It spins in a tilted, chaotic way
    30s
  • Q3
    Which group lists only rocky, high-density worlds?
    Mars, Saturn, Uranus
    Jupiter, Saturn, Neptune
    Earth, Jupiter, Neptune
    Mercury, Venus, Earth, Mars
    30s
  • Q4
    Which statement below is incorrect about the differences between inner and outer planets?
    Outer worlds tend to be larger with thick gas layers
    Inner worlds are mostly made of ice while outer planets are not
    Inner worlds tend to be smaller and denser
    Inner worlds are closer to the Sun
    30s
  • Q5
    Which planets in our solar system have rings?
    All four giant planets
    Only Saturn
    Saturn, Uranus, and Neptune
    Jupiter and Saturn
    30s
  • Q6
    Pluto belongs to which region of space?
    A band of icy bodies beyond Neptune
    The area occupied by the inner planets
    The zone between Mars and Jupiter
    A distant spherical cloud of comets
    30s
  • Q7
    What is a defining trait of a dwarf planet?
    It is always found in the asteroid belt
    It does not orbit the Sun
    It orbits the Sun but shares its path with many smaller objects
    It is made only of metal
    30s
  • Q8
    Which description best matches the distant Oort cloud?
    A huge, roughly spherical swarm of icy bodies far beyond Pluto
    A flattened ring between Mars and Jupiter
    A belt of rocky asteroids just outside Neptune
    The gas cloud that formed the Sun
    30s
  • Q9
    Which correction makes this statement accurate:
    The Oort cloud contains no icy bodies
    The Kuiper belt is empty
    The asteroid belt holds only comets
    The Kuiper belt is mostly icy objects, not rocky ones
    30s
  • Q10
    Which option does NOT match the general motion patterns of major bodies in the solar system?
    Planet paths around the Sun mostly lie in a common plane
    Planets usually spin in the same direction they travel around the Sun
    Planets orbit the Sun opposite to the Sun’s spin
    Most large moons move around their planets in the same direction the planet rotates
    30s
  • Q11
    What main influence causes a giant cloud of gas in space to shrink and form a star with planets?
    Gravity drawing material inward
    Pressure from starlight
    Electrical charges in the gas
    Magnetic fields
    30s
  • Q12
    As the original solar cloud contracted, why did its temperature rise?
    Impacts between finished planets warmed it
    Energy from fusion in the young Sun flowed outward into it
    Nearby exploding stars heated it
    Falling inward converted gravitational energy into heat
    30s
  • Q13
    Which idea best explains why most planets orbit in similar directions and nearly the same flat plane?
    Every planet’s orbit was set by random chance
    They formed inside a spinning, flattened disk around the young Sun
    The Sun threw them outward as it turned on
    The Sun forced them into that arrangement long after they formed
    30s
  • Q14
    In the gas cloud that formed our solar system, which component was present in the smallest amount?
    Icy compounds (like water and methane ices)
    Metals
    Helium gas
    Hydrogen gas
    30s
  • Q15
    During the early stages of building planets, what did “sticking together” of small pieces lead to?
    Tiny bits merging into larger clumps and building blocks of planets
    Ices melting and disappearing
    Gas turning instantly into solid rock
    Atoms turning directly into planets
    30s

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