Mars and the Possibility of Life

What are some of the conditions that made early Mars a suitable place for life?

• Lack of atmosphere

• Presence of water and organic chemistry

• Extreme temperatures

• Absence of nutrients

What have scientists discovered about Mars's history of life?

• Life on Mars was never possible

• Mars has always been barren

• Mars was once a tropical paradise

• Mars may have experienced multiple cycles of life and extinction

Why might Mars have developed life before Earth?

• Mars had a thicker atmosphere

• Mars cooled faster due to its smaller size

• Mars is closer to the Sun

• Mars had more volcanic activity

What was the Borealis impact?

• A solar flare

• A small meteor shower

• A massive impact that created a large basin on Mars

• A volcanic eruption

What was the result of the Borealis impact on Mars?

• It created a new atmosphere

• It had no significant effect

• It caused Mars to become more habitable

• It melted the planet's surface and sterilized it

How did the Borealis impact affect Mars's geography?

• It flattened the entire planet

• It made Mars perfectly round

• It caused Mars to split into two planets

• It created a large crater and altered the planet's shape

What is the crustal dichotomy on Mars?

• A variation in magnetic field strength

• A difference in elevation between the northern and southern hemispheres

• A variation in surface temperature

• A difference in atmospheric pressure

What is the significance of the Borealis Basin?

• It is the largest impact basin in the solar system

• It is the largest volcanic crater on Mars

• It is the highest mountain range on Mars

• It is the deepest ocean on Mars

What happened to Mars's atmosphere and oceans after the Borealis impact?

• They became thicker and more stable

• They were blown into space and boiled away

• They remained unchanged

• They turned into solid ice

How long did it take for Mars to recover from the Borealis impact?

• 50 million years

• 100 million years

• 10 million years

• 500 million years