Question

Which of the following statements about Mars are TRUE? (Choose multiple answers). The northern hemisphere is very heavily cratered & higher in elevation than the southern hemisphere. Mars is very red in color because its surface is rich in iron oxide. Mars' ice caps are composed of a mix of carbon dioxide & water ice. The water ice is more permanent than the carbon dioxide ice. Mars' volcanoes are still active today, as seen in a number of recent photos showing fresh lava flows. The northern hemisphere consists of a younger surface than the southern hemisphere. The northern lowlands are essentially smooth volcanic plains which may have been partially filled with water in the past. Several spacecraft have landed successfully on Mars & a number of rovers have studied its surface, some of them lasting for far longer than anyone expected. Mars' axial tilt is too shallow to allow it to have seasons, so each location on the planet receives the same amount of sunlight all year long. Mars is home to the solar system's largest volcano & its largest canyon system. Mars' current climate may have a lot to do with its interior cooling down & ultimately shutting off its magnetic field.

Answer 1

Several statements about Mars are true, including its heavily cratered northern hemisphere, red color due to iron oxide, mix of ice caps composed of carbon dioxide and water ice, active volcanoes, younger surface in the northern hemisphere, smooth volcanic plains in the northern lowlands that may have had water, successful spacecraft landings and studies, presence of Olympus Mons and Valles Marineris, and a current climate affected by cooling and magnetic field shutdown.

Step-by-step explanation:

Several statements about Mars are true:

1. The northern hemisphere is heavily cratered and higher in elevation than the southern hemisphere.
2. Mars is red in color because its surface is rich in iron oxide.
3. Mars' ice caps are composed of a mix of carbon dioxide and water ice, with the water ice being more permanent than the carbon dioxide ice.
4. Mars' volcanoes are still active today, as seen in recent photos showing fresh lava flows.
5. The northern hemisphere consists of a younger surface than the southern hemisphere.
6. The northern lowlands are smooth volcanic plains which may have been partially filled with water in the past.
7. Several spacecraft have landed successfully on Mars and a number of rovers have studied its surface.
8. Mars is home to the solar system's largest volcano, Olympus Mons, and its largest canyon system, Valles Marineris.
9. Mars' current climate may be related to its interior cooling down and ultimately shutting off its magnetic field.

Answer 2

The northern hemisphere is heavily cratered and higher in elevation. Mars is red due to iron oxide. Mars' ice caps are made of a mix of carbon dioxide and water ice.

Step-by-step explanation:

The following statements about Mars are TRUE:

• The northern hemisphere is very heavily cratered & higher in elevation than the southern hemisphere. Mars has heavily cratered highlands in its southern hemisphere and younger, lower volcanic plains over much of its northern half.
• Mars is very red because its surface is rich in iron oxide. The planet's red color is due to the presence of iron oxides in its soil.
• Mars' ice caps are composed of a mix of carbon dioxide & water ice. The southern ice cap is composed mainly of carbon dioxide ice, while the northern permanent cap is composed of water ice.

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