A Tour of the Solar System

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  1. Define: Planets

    "Most of the dots are planets."
    Planet: A large body orbiting a star. A celestrial body.
  2. Define: Stars

    "There is a star in the center of the solar system."
    Star: A huge gas sphere that radiates light. The Sun is a star.
  3. Define: Orbit

    "Four small planets orbit pretty close to the star."
    Orbit: To travel in a curved path around something else.
  4. Define: Terrestrial planets

    "These are the rocky terrestrial planets."
    Terrestrial planets: One of the four small and rocky planets closest to the Sun. These are Mercury, Venus, Earth, and Mars.
  5. Define: Asteroid

    "Next there is a region of small bits of matter orbiting the star known as the asteroid belt."
    Asteroid: Small, solid objects that orbit the sun. Most of the asteroids in the solar system are located between Mars and Jupiter.
  6. Define: Gas giants

    "Out further, four big gas planets orbit the star. These are the gas giants."
    Gas giants: Any of the four planets that are made of gas. These are Jupiter, Saturn, Uranus, and Neptune.
  7. Define: Kuiper Belt

    "Beyond the gas giants is a huge region of different-size icy chunks of matter called the Kuiper Belt."
    Kuiper Belt: A huge region beyond the gas giants made up of different-size icy chunks of matter.
  8. Define: Milky Way

    "It is much like millions of other stars in the Milky Way galaxy."
    Milky Way: The galaxy in which the solar system resides.
  9. Define: Hydrogen

    "The Sun is made mostly of hydrogen (72%) and helium (26%)."
    Hydrogen: A gas that makes up 72% of the Sun.
  10. Define: Helium

    "The Sun is made mostly of hydrogen (72%) and helium (26%)."
    Helium: A gas that makes up 26% of the Sun.
  11. Define: Thermonuclear reactions

    "Hydrogen atoms constantly combine to form helium atoms in thermonuclear reactions."
    Thermonuclear reactions: Reactions that change atomic structure and create heat and light energy, such as the reactions that occur on the Sun.
  12. Define: Mass

    "About 3.6 tons of the Sun's mass is being changed into heat and light every second."
    Mass: The amount of material in something.
  13. Define: Predictable

    "All the other solar-system objects travel around the Sun in predictable almost-circular paths called orbits."
    Predictable: Possible to estimate a future event based on data or experience.
  14. Define: Mercury

    "Mercury is closest to the Sun."
    Mercury: The planet closest to the Sun.
  15. Define: Satellite

    "Mercury is smaller than Earth and has no satellite (moon)."
    Satellite: An object, natural or artificial, that orbits a larger object. Moons are satellites.
  16. Define: Craters

    "Mercury is covered with craters. The craters are the result of thousands of collisions with objects flying through space."
    Craters: A hole formed by an object impacting a surface.
  17. Define: Venus

    "Venus is the second planet from the Sun."
    Venus: The second planet from the Sun.
  18. Define: Earth

    Earth is the third planet from the Sun."
    Earth: The third planet from the Sun, known as the water planet.
  19. Define: Moon

    "Earth also has one large satellite called the Moon."
    Moon: Earth's natural satellite.
  20. Define: Extraterrestrial

    "The Moon is the only extraterrestrial place humans have visited."
    Extraterrestrial: Beyond Earth.
  21. Define: Mars

    Mars is the fourth planet from the Sun and has two small satellites, Phobos and Deimos."
    Mars: The fourth planet from the Sun.
  22. Define: Jupiter

    "Jupiter is the fifth planet from the Sun."
    Jupiter: The fifth planet from the Sun.
  23. Define: Saturn

    "Saturn is the sixth planet from the Sun."
    Saturn: The sixth planet form the Sun.
  24. Define: Uranus

    "Uranus is the seventh planet from the Sun."
    Uranus: The seventh planet from the Sun.
  25. Define: Neptune

    "Neptune is the eighth planet form the Sun."
    Neptune: The eighth planet from the Sun.
  26. Define: Comets

    "Comets are big chunks of ice, rock, and gas."
    Comets: A mass of ice and dust orbiting the Sun.
  27. Review Questions

    What is the Sun and what is it made of?
    The Sun is made mostly of hydrogen (72%) and helium (26%).
  28. Review Questions

    What is the solar system?
    The planet Earth, the Moon, the Sun, and the seven other planets (1.Mercury 2.Venus 4.Mars 5.Jupiter 6.Saturn 7.Uranus 8.Neptune) and their satellites, and small objects, such as asteroids and comets.
  29. Review Questions

    Which planets are terrestrial planets? Which planets are gas giants?
    Mercury, Venus, Earth, and Mars are terrestrial planets. Jupiter, Saturn, Uranus, and Neptune are gas giants.
  30. Review Questions

    What is Kuiper Belt and what is found there?
    Kuiper Belt is a huge region beyond the gas giants made up of different-size icy chunks of matter. Some icy chunks that are big enough to be planets can be found there.
  31. Review Questions

    Which planet has the most moons orbiting it?
    Jupiter is the planet with the most moons. Jupiter has 63 moons orbiting around it.
  32. Review Questions

    How are asteroids and comets alike and different?
    Both asteroids and comets orbit around the Sun.

    Asteroids are mostly located between Mars and Jupiter.

    Comets are mass of ice and dust orbiting the Sun. Comets can be located outside of the area between Mars and Jupiter.
Card Set:
A Tour of the Solar System
2013-03-11 18:49:05
Tour Solar System

Jefferson Elementary School Rm 204
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