Since the 19th century, humans have wondered about the prospect of life on Mars. While we haven't sent anyone to the Martian surface, we have sent spacecrafts, which have gathered a good amount of information on what it's like on Mars. How is it different from Earth? How is it similar? And could life really have existed there long ago, or exist in the future?
The first map of Mars was created by an astronomer from:
- the United States
The first space probes to land on Mars were called the:
- Mariner 9 and 10
- Viking 1 and 2
- Voyager 5 and 6
Which of the following is one of the three major regions on Mars?
- Southern Highlands
- Eastern Plains
- Western Plateau
The highest mountain on Mars is called the:
- Mauna Loa
- Valles Marineris
- Olympus Mons
How many miles long is the Valles Marineris?
- 1,200 miles
- 2,400 miles
- 4,000 miles
What is the average surface temperature (in Fahrenheit) on Mars?
The atmosphere on Mars is 95 percent:
- carbon dioxide
A Martian day is known as a:
Scientists today theorize that Mars formed by accretion, which took about:
- 100,000 years
- 4,000,000 years
- 10,000,000 years
In comparison to Earth, Mars is most similar to:
- the Himalayas, a cold, mountainous landscape
- Antarctica, a dry, cold desert
- an exaggerated Sahara desert, sandy and extremely hot