Planet Mars Quiz
Why are scientists so interested in whether they can find traces of water on Mars?
If life ever existed on Mars, scientists believe it would have taken the form of:
The subtitle of this video is The New Frontier. Which definition of the word ?frontier? best describes the implication of that title?
Which of the following TWO types of ice were found on Mars?
Mars is often called the _____ planet
Which of the following instruments were used on or around Mars to search for life?