Sixth Grade Science: The Solar System

While over 4.6 billion years old, our solar system is comprised of planets and smaller objects, such as dwarf planets and small solar system bodies. How many actual planets are in our solar system?

After over 70 years as a planet, what is the name of the now "dwarf planet" that was declassified in 2006?

Which planets have rings?

Which planet's location is closest to the sun?

In our solar system, which planet is the largest?

Which planet's atmosphere is 78% nitrogen and 21% oxygen?

How long does it take for sunlight to reach the Earth?

Who was the first man to walk on the moon?