Chapter 3: The Planets Closest to the Sun

How did people look at the planets a long time ago compared to now? (Pages 14-15)

Which planet takes the longest time to orbit the sun? (Pages 16 and 17)

• Mercury

• Venus

• Earth

Which planet takes the shortest time to orbit the sun? (Pages 16 and 17)

• Mercury

• Venus

• Earth

Why does Mars look red when you see it in the night sky? (Pages 20 and 21)

• It is covered in rocks that contain rust.

• The planet's surface is covered in red colored plants.

• The planet is made out of gases that appear to be red.

How did the planets get their names? (Pages 18 and 19)

Scientists discovered ice on Mars. Why is this such an important discovery? (Pages 20 and 21)