Name ______Period ______Date______

Chapter 3 Test Review Answers

Section 3.1

  1. List the 5 different types of objects in the Solar System:
    - ______

- ______

- ______

- ______

- ________

  1. Describe how the Solar System formed:
    ______
  1. Why do planets and large moons have a round, spherical shape?
    ______
  2. An Astronomical Unit (AU) is ______________.

Section 3.2

  1. _______________– when hot, molten rock moves from underneath to the surface of the planet; creates valleys and mountains

______ -change in the crust due to movement of material underneath; creates cracks and cliffs

__________-pits created when an object (meteorite) strikes the ground

_________ – the breaking down of rock due to wind, water or gravity; causes sand dunes to form

  1. Name the planet being described below:
    ______________
  2. No atmosphere
  3. Lots of impact craters
  4. No moon
  5. Largest difference in temperature between day and night

______________

  1. Hottest planet
  2. Thick atmosphere of sulfuric acid maintains uniform temperature
  3. No moons
  4. Greenhouse Effect does not let heat escape
  5. Almost same size as Earth

_______________

  1. Red planet because of iron oxide on surface
  2. Two moons
  3. ½ size of earth’s diameter
  4. Has large volcanoes ~ bigger than tallest mountain on Earth

Section 3.3

  1. Describe the atmosphere of gas giants:
  • Size:______
  • Density: ______
  • Core: ______
  1. Gas Giant Facts
    Jupiter
  2. Largest planet in Solar System; larger mass than all other planets put together
  3. Fast rotation produces ______
  4. Jupiter’s Great Red Spot is ______

Saturn

  • Saturn’s rings are made of ______.
  • How are Saturn’s rings are used to see the planet’s season? ______

Uranus

  • Rotates ______.
  • Made mostly of ______.

Neptune

  • White spots because of ______.
  • Has one ______named ______that orbits in the opposite direction

**Make sure you know the similarities and differences between the inner and outer planets. **

Section 3.4

  1. An asteroid is made of ______and ______and is formed close to the sun. They orbit between Mars and Jupiter
    A comet is made of ______and is formed far from the sun. They have their own orbits far from the sun.
  2. A ______is a bright streak of light from a falling space object as it enters the atmosphere. A ______is a fallen space object on Earth’s surface.