for the answers.
| 1.What is Mercury's most well-known feature? | Caloris Basin |
| 2.What is the point of the planet closest to the sun? | Subsolar point |
| 3.What planet is closest to Earth in size? | Venus |
| 4.What two moons orbit Mars? | Phobos and Deimos |
| 5.Saturn is famous for its _____. | Set of over a thousand rings |
| 6.Mercury's core is mostly made up of: | Metal |
| 7.A day on _____ is longer than the planet's year. | Venus |
| 8.On Mars, which polar cap is larger and colder? | Northern |
| 9.What is the cause of tremendous heat on Venus? | The thick atmosphere and clouds |
| 10.True or False: Mars has liquid water. | False |
| 11.Venus is named after the Roman goddess of _____. | Love and Beauty |
| 12.The reddish color of Mars comes from all the _____ in its soil. | Iron |
| 13.Jupiter is mostly made up of _____? | Hydrogen and Helium |
| 14.True or False: Jupiter has rings. | True |
| 15.True or false: Saturn rotates more quickly than Earth. | True |
| 16.Scientists think that Europa may have _____? | An underground ocean |
| 17.What planet has a density less than water? | Saturn |
| 18.Saturn takes _____ Earth years to orbit the sun. | 29.5 |
| 19. What is Jupiter's most well-known feature? | The Great Red Spot |
| 20.The yellow bands on Saturn are formed by _____. | Crystallized ammonia |
| 21.Comets contain lots of _____. | Ice |
| 22._____ are often called "minor planets." | Asteroids |
| 23.The Great White Spot is a storm that lasts _____. | A Month |
| 24.What three planets rotate in the opposite direction of all the other planets? | Venus, Uranus, and Pluto |
| 25.The Milky Way is a _____ galaxy. | Spiral |
| 26.Comet tails are made mostly of _____. | Gas |
| 27.True or False: the Milky Way is the smallest galaxy in the Local Group. | False |
| 28.What is the closest planet to the sun? | Mercury |
| 29.When an asteroid is burning up in the Earth's atmosphere, it is called a _____. | Meteor |
| 30.A comet's tail points _____. | Away from the sun |
| 31.Our solar system is located in the Milky Way arm known as the _____ arm. | Orion |
