The Outer Planets: Neptune and Beyond

The video discusses Neptune, a distant planet with a blue-green color and thick clouds, known for its cold temperature due to its distance from the sun. Neptune has eight moons, with Triton being the largest. The video also covers Pluto's reclassification from the ninth planet to a dwarf planet, highlighting its solid surface and smaller mass compared to Earth, along with its moon, Charon.

What is the color of Neptune and what contributes to its appearance?

• Red, due to iron oxide

• Blue-green, due to thick cloud cover

• White, due to ice

• Yellow, due to sulfuric acid

Which of the following is the largest moon orbiting Neptune?

• Europa

• Callisto

• Ganymede

• Triton

What was Pluto originally classified as in the solar system?

• A star

• An asteroid

• A comet

• The ninth planet

Why is Pluto no longer considered a planet by most scientists?

• It is too close to the sun

• It lacks the necessary properties of a planet

• It is larger than Earth

• It has too many moons

How do Pluto and its moon, Charon, compare to Earth in terms of mass?

• They have the same mass as Earth

• They have much less mass than Earth

• They have no mass

• They have more mass than Earth