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Lesson: The Structure of the Solar System

Question Video: Describing Objects in the Solar System

03:33

Worksheet: The Structure of the Solar System • 20 Questions

Q1:

Which of the following is the correct definition of a moon?

  • AA moon is a naturally occurring object that orbits a planet. Moons usually have almost circular orbits.
  • BA moon is a man-made object that orbits the Sun within the asteroid belt.
  • CA moon is a man-made object that orbits a planet. Moons usually have almost circular orbits.
  • DA moon is a naturally occurring object that orbits the Sun with a highly elliptical orbit.
  • EA moon is a naturally occurring object that orbits the Sun. Moons usually have almost circular orbits.

Q2:

Which of the following is the correct definition of a comet?

  • AA comet is a mass of ice and dust that orbits the Sun. Comets usually have highly elliptical orbits.
  • BA comet is a mass of ice and rock that orbits a planet. Comets usually have highly elliptical orbits.
  • CA comet is a mass of metal that orbits the Sun. Comets usually have highly elliptical orbits.
  • DA comet is a mass of rock and metal that orbits the Sun with a perfectly circular orbit.
  • EA comet is a mass of ice and dust that orbits the Sun with a perfectly circular orbit.

Q3:

A protostar is formed when a cloud of dust and gas is pulled inward due to the force of . The of the dust and gas is converted into kinetic energy. As the particles collide, the kinetic energy is converted into .

  • Agravitational attraction, potential energy, heat
  • Bgravitational attraction, chemical energy, potential energy
  • Cgravitational attraction, heat, potential energy
  • Delectrostatic attraction, heat, potential energy
  • Eelectrostatic attraction, potential energy, potential energy
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