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Questions and Answers

What is the primary cause of compasses pointing north?

  • The sun's atmosphere
  • Solar winds
  • The moon's gravitational pull
  • Earth's magnetic field (correct)

    • What is the source of solar wind?

  • Moon's surface
  • Photosphere
  • Chromosphere
  • Corona (correct)

    • What causes the moon to be visible from Earth?

  • Solar winds
  • Internal luminosity
  • Earth's magnetic field
  • Reflected sunlight (correct)

    • Which moon cycle comes after the waxing crescent?

    <p>First quarter</p> Signup and view all the answers

    What caused the formation of the moon according to the Condensation Theory?

    <p>Impact on Earth by a protostar named Theia</p> Signup and view all the answers

    Which planet has a retrograde rotation?

    <p>Venus</p> Signup and view all the answers

    What are the characteristics of Venus's atmosphere?

    <p>CO2 atmosphere and rigid crust</p> Signup and view all the answers

    Which planet has evidence of past water?

    <p>Mars</p> Signup and view all the answers

    What are the components of the Solar System?

    <p>Planets, asteroids, moons, dwarf planets, and comets</p> Signup and view all the answers

    What are comets composed of?

    <p>Nucleus and some have a tail</p> Signup and view all the answers

    What is the distinguishing feature of a dwarf planet?

    <p>Only orbited the sun and is spherical</p> Signup and view all the answers

    Which are the Galilean moons of Jupiter?

    <p>Ganymede, Europa, Io, and Callisto</p> Signup and view all the answers

    Which are the gas giants in the Solar System?

    <p>Jupiter and Saturn</p> Signup and view all the answers

    What are the characteristics of terrestrial planets?

    <p>Inner planets with a composition of rock or iron</p> Signup and view all the answers

    What is retrograde motion in planetary terms?

    <p>When the object spins in the opposite direction as its orbit</p> Signup and view all the answers

    What is the primary cause of compasses pointing north?

    <p>Earths magnetic field</p> Signup and view all the answers

    What is the visible surface of the sun called?

    <p>Photosphere</p> Signup and view all the answers

    What causes the moon to be visible from Earth?

    <p>Reflected sunlight</p> Signup and view all the answers

    What are the moon cycles in the correct order?

    <p>New moon, waxing crescent, first quarter, waxing gibbous, full moon</p> Signup and view all the answers

    What is the composition of Jovian planets?

    <p>Primarily hydrogen and helium</p> Signup and view all the answers

    What are the Galilean moons of Jupiter?

    <p>Ganymede, Europa, Io, Callisto</p> Signup and view all the answers

    What is the evidence of volcanic activity on Venus?

    <p>Lava flows and volcanic domes</p> Signup and view all the answers

    What is the size comparison between Mars and Earth?

    <p>Mars is half the size of Earth</p> Signup and view all the answers

    What are the characteristics of asteroids?

    <p>Rocky or metallic objects larger than 100m across</p> Signup and view all the answers

    What is the primary difference between planets and dwarf planets?

    <p>Dwarf planets have only orbited the sun and are spherical</p> Signup and view all the answers

    What is the composition of the moon's surface features Maria and Highlands?

    <p>Maria - dark, flat areas; Highlands - bright, mountainous regions</p> Signup and view all the answers

    What are comets composed of?

    <p>Composed of nucleus and some have a tail</p> Signup and view all the answers

    What is the characteristic of terrestrial planets?

    <p>Inner planets with a composition of rock or iron</p> Signup and view all the answers

    What is the definition of prograde motion in planetary terms?

    <p>When the object spins in the same direction as its orbit</p> Signup and view all the answers

    What are meteorites?

    <p>Rocks from space that fall through Earth's atmosphere</p> Signup and view all the answers

    Study Notes

    Planetary Bodies and Solar System Components

    • Moon cycles include new moon, waxing crescent, first quarter, waxing gibbous, and full moon, with surface features such as Maria and Highlands.
    • The moon was formed after an impact on Earth by a protostar named Theia, leading to the Condensation Theory.
    • Venus rotates retrograde, has evidence of volcanic activity, temperatures of 450 degrees Celsius, a CO2 atmosphere, and a rigid crust.
    • Mars, the red planet, is cold and dry, with extreme and longer seasons, half the size of Earth, and evidence of past water.
    • The Solar System components include planets, asteroids, moons, dwarf planets, and comets.
    • Asteroids are rocky or metallic objects larger than 100m across, while comets are composed of nucleus and some have a tail.
    • Meteoroids are small, less than 1m across, meteors are the bright trail left behind, and meteorites are rocks from space that fall through Earth's atmosphere.
    • Planets orbit the sun, are spherical, and have cleared their orbit, while dwarf planets have only orbited the sun and are spherical.
    • Jupiter's moons, the Galilean moons, include Ganymede, Europa, Io, and Callisto, each with distinct characteristics.
    • The Solar System has gas giants (Jupiter and Saturn) and ice giants (Neptune and Uranus).
    • Terrestrial planets are inner planets with a composition of rock or iron, while Jovian planets are outer planets composed primarily of hydrogen and helium.
    • Prograde motion is when the object spins in the same direction as its orbit, while retrograde motion is the opposite, and most planets have prograde motion.

    Planetary Bodies and Solar System Components

    • Moon cycles include new moon, waxing crescent, first quarter, waxing gibbous, and full moon, with surface features such as Maria and Highlands.
    • The moon was formed after an impact on Earth by a protostar named Theia, leading to the Condensation Theory.
    • Venus rotates retrograde, has evidence of volcanic activity, temperatures of 450 degrees Celsius, a CO2 atmosphere, and a rigid crust.
    • Mars, the red planet, is cold and dry, with extreme and longer seasons, half the size of Earth, and evidence of past water.
    • The Solar System components include planets, asteroids, moons, dwarf planets, and comets.
    • Asteroids are rocky or metallic objects larger than 100m across, while comets are composed of nucleus and some have a tail.
    • Meteoroids are small, less than 1m across, meteors are the bright trail left behind, and meteorites are rocks from space that fall through Earth's atmosphere.
    • Planets orbit the sun, are spherical, and have cleared their orbit, while dwarf planets have only orbited the sun and are spherical.
    • Jupiter's moons, the Galilean moons, include Ganymede, Europa, Io, and Callisto, each with distinct characteristics.
    • The Solar System has gas giants (Jupiter and Saturn) and ice giants (Neptune and Uranus).
    • Terrestrial planets are inner planets with a composition of rock or iron, while Jovian planets are outer planets composed primarily of hydrogen and helium.
    • Prograde motion is when the object spins in the same direction as its orbit, while retrograde motion is the opposite, and most planets have prograde motion.

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    Unit 2 test (SES4U1).pptx

    Description

    Test your knowledge of planetary bodies and solar system components with this quiz! Explore the moon's cycles and formation, unique features of Venus and Mars, and the characteristics of asteroids, comets, and meteoroids. Learn about the different types of planets, moons, and giants in our solar system, and understand the concepts of prograde and retrograde motion.

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