• Unit Ten-Beyond Planet Earth

    What You'll Learn 1:
    • How gravity and orbits are related.
    • The characteristics of planets and interplanetary bodies.
    • What theroy is used to describe the formation of the solar system.
    Why It's Important 1:
    The laws of motion and universal gravitation explain how gravity governs the motions of the planets and other planetary bodies.  Scientists base the model of our solar system on observations of the organization and nature of the planets and interplanetary bodies.
    Key Vocabulary 1:
    aphelion astronomical unit eccentricity
    perihelion retrograde motion gas giant planet
    precession terrestrial planet belt
    liquid metallic hydrogen zone asteroid
    coma comet meteor
    metero shower meteorite meteoroid
    nucleus planetesimal
    Key Concepts/Understandings 1:
    • Describe early models of our solar system.
    • Examine the modern heliocentric model of our solar system.
    • Relate gravity to the motions of celestial bodies.
    • Describe the properties of the terrestrial planets.
    • Compare Earth with the other terrestrial planets.
    • Describe the properties of the gas gaint planets.
    • Identify the unique nature to the planet Pluto.
    • Summarize the properties of the solar system that support the theory of the solar system's formation.
    • Describe how the planets form from a disk lsurrounding a young Sun.
    • Explore remnants of solar system formation.
    What You'll Learn 2:
    • What the Milky Way Galaxy is like.
    • How galaxies are distributed and what their characteristics are.
    • What astronomers know about the origin and history of the universe.
    Why It's Important 2:
    The study of galaxies and the structure fo teh universe helps scientist to better understand the origin of our solar system as well as Earth's origin.
    Key Vocabulary 2:
    Cephid variable halo RR Lyrae variable
    spiral density wave variable star active galactic nucleus
    Hubble constant quasar supercluster
    Big Bang theory cosmic background radiation radio galaxy
    cosmology inflationary universe steady-state theory
    Key Concepts/Understandings 2:
    • Determine the size and shape of teh Milky Way, as well as Earth's location within it.
    • Describe how the Milky Way formed.
    • Describe how astronomers classify galxies.
    • Identify how galaxies are organized into clusters and superclusters.
    • Describe the expansion of the universe.
    • Expalin the different teories about the formation of the universe.
    • Describe the possible outcomes of universal expansion

Last Modified on February 23, 2015