Podcast
Questions and Answers
Which planet is colder?
Which planet is colder?
Which planet is about half the size of Earth?
Which planet is about half the size of Earth?
Which planet has a slightly longer day than Earth?
Which planet has a slightly longer day than Earth?
Which planet probably had oceans in the past?
Which planet probably had oceans in the past?
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Which planet has about 1% as much air as Earth?
Which planet has about 1% as much air as Earth?
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Which planet has higher gravity than the Moon?
Which planet has higher gravity than the Moon?
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What is Earth's air mostly made up of?
What is Earth's air mostly made up of?
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Which planet is called the red planet?
Which planet is called the red planet?
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Which planet is further away from the Sun than Earth?
Which planet is further away from the Sun than Earth?
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Which planet has only about 38% of Earth's gravity?
Which planet has only about 38% of Earth's gravity?
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Study Notes
- Mars is much colder than Earth, with temperatures around -55 degrees Celsius.
- Mars is further away from the Sun than Earth, but the difference is not significant when measured in astronomical units.
- Mars is about half the size of Earth.
- The length of a day on Mars is slightly longer than on Earth.
- Mars probably had oceans in the past, but most of the water there now is frozen.
- Mars has about 1% as much air as Earth, mostly carbon dioxide.
- Mars has higher gravity than the Moon but only about 38% of Earth's gravity.
- Earth's air is mostly nitrogen and oxygen.
- Earth is called the blue planet and Mars is called the red planet.
- The students are discussing the similarities and differences between Mars and Earth.
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