Terrestrial Planets in Our Solar System

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Questions and Answers

Which planet is known for being the hottest in the solar system?

  • Mercury
  • Mars
  • Jupiter
  • Venus (correct)

Which of the following planets is NOT a gas giant?

  • Uranus
  • Saturn
  • Jupiter
  • Mars (correct)

What is unique about Uranus' axis?

  • It is tilted at a 45-degree angle
  • It is tilted on its side (correct)
  • It is tilted at a 23.5-degree angle
  • It is tilted at a 90-degree angle

What is the primary composition of the gas giants?

<p>Hydrogen and helium (C)</p> Signup and view all the answers

Which dwarf planet has a highly eccentric orbit?

<p>Eris (B)</p> Signup and view all the answers

What percentage of Earth's surface is covered in water?

<p>71% (B)</p> Signup and view all the answers

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Study Notes

Planets of the Solar System

Terrestrial Planets

  • Mercury:
    • Smallest planet in our solar system
    • Closest to the sun
    • Rocky composition
    • No atmosphere
  • Mars:
    • Known as the Red Planet
    • Rocky composition
    • Has polar ice caps
    • Potential for life
  • Earth:
    • Only known planet to support life
    • Rocky composition
    • 71% water
    • Atmosphere consists of 78% nitrogen, 21% oxygen
  • Venus:
    • Hottest planet in the solar system
    • Rocky composition
    • Thick atmosphere traps heat
    • Volcanic surface

Gas Giants

  • Jupiter:
    • Largest planet in our solar system
    • Gas composition (mostly hydrogen and helium)
    • Stormy atmosphere (Great Red Spot)
    • Many moons ( Io, Europa, Ganymede, Callisto)
  • Saturn:
    • Second-largest planet in our solar system
    • Gas composition (mostly hydrogen and helium)
    • Ring system
    • Many moons (Titan, Enceladus)
  • Uranus:
    • Tilted axis (rotates on its side)
    • Gas composition (mostly hydrogen, helium, and methane)
    • Cold atmosphere
    • Few moons
  • Neptune:
    • Coldest planet in the solar system
    • Gas composition (mostly hydrogen, helium, and methane)
    • Strong winds
    • Few moons

Ice Giants

  • Uranus:
    • See above
  • Neptune:
    • See above

Dwarf Planets

  • Pluto:
    • Formerly considered the ninth planet
    • Rocky and icy composition
    • Small size
    • Kuiper Belt object
  • Eris:
    • Located in the Kuiper Belt
    • Rocky and icy composition
    • Similar size to Pluto
    • Highly eccentric orbit
  • Haumea:
    • Located in the Kuiper Belt
    • Rocky and icy composition
    • Irregular shape
    • Highly eccentric orbit

Terrestrial Planets

  • Mercury is the smallest planet in our solar system.
  • Mercury is the closest planet to the sun.
  • Mercury has a rocky composition and no atmosphere.
  • Mars is known as the Red Planet due to its rocky composition.
  • Mars has polar ice caps and shows potential for life.
  • Earth is the only known planet to support life.
  • Earth's composition is rocky, with 71% of its surface being water.
  • Earth's atmosphere consists of 78% nitrogen and 21% oxygen.

Gas Giants

  • Jupiter is the largest planet in our solar system.
  • Jupiter has a gas composition, primarily consisting of hydrogen and helium.
  • Jupiter's atmosphere is stormy, featuring the Great Red Spot.
  • Jupiter has many moons, including Io, Europa, Ganymede, and Callisto.
  • Saturn is the second-largest planet in our solar system.
  • Saturn has a gas composition, primarily consisting of hydrogen and helium.
  • Saturn features a prominent ring system.
  • Saturn has many moons, including Titan and Enceladus.
  • Uranus has a tilted axis, rotating on its side.
  • Uranus has a gas composition, primarily consisting of hydrogen, helium, and methane.
  • Uranus has a cold atmosphere and few moons.
  • Neptune is the coldest planet in our solar system.
  • Neptune has a gas composition, primarily consisting of hydrogen, helium, and methane.
  • Neptune's atmosphere is subject to strong winds, and it has few moons.

Ice Giants

  • Uranus is an Ice Giant, characterized by its tilted axis and cold atmosphere.
  • Neptune is an Ice Giant, characterized by its cold atmosphere and strong winds.

Dwarf Planets

  • Pluto is a dwarf planet, formerly considered the ninth planet in our solar system.
  • Pluto has a rocky and icy composition and is small in size.
  • Pluto is a Kuiper Belt object.
  • Eris is a dwarf planet, located in the Kuiper Belt.
  • Eris has a rocky and icy composition, similar in size to Pluto.
  • Eris has a highly eccentric orbit.
  • Haumea is a dwarf planet, located in the Kuiper Belt.
  • Haumea has a rocky and icy composition, and an irregular shape.
  • Haumea has a highly eccentric orbit.

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