Inner and Outer Planets (Planetary Systems Review)

Which planets are called terrestrial planets?

• Jupiter, Saturn, Uranus, and Neptune
• Mercury, Venus, Earth, and Mars
• All of the planets in our solar system
• None of the planets in our solar system

What are the outer planets mostly made of?

• Rock and metal
• Gas
• Ice
• Dust

Why are the outer planets colder than the inner planets?

• They are closer to the sun.
• They are farther from the sun.
• They are made of gas.
• They have more moons.

Which planet is the smallest in our solar system?

• Mercury
• Venus
• Earth
• Mars

What are the outer planets sometimes called?

• Terrestrial planets
• Gas giants
• Rocky planets
• Ice giants

What are the inner planets made of?

• Hydrogen and helium
• Iron and nickel
• Ice and rock
• Gas and dust

Why do the inner planets have a stronger gravitational pull than the outer planets?

• They are closer to the sun.
• They are made of heavier elements.
• They are smaller in size.
• They have more moons.

What is the main reason why the inner planets are hotter than the outer planets?

• They are closer to the sun.
• They have thicker atmospheres.
• They are made of heavier elements.
• They have more moons.

Based on the text, which of these statements is TRUE about the inner planets?

• They have thick atmospheres.
• They are made up of mostly gas.
• They are larger than the outer planets.
• They are the only planets that can support life.

What are the two groups of planets in our solar system?