"Mars—Twin Brother of Earth" PPT Courseware 5

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"Mars—Twin Brother of Earth" PPT Courseware 5

Think about it:

Why does the text call Mars and Earth twins? Ask students to read the text freely with questions.

Read the correct pronunciation:

lava steam canyon defect

Coerced by uncertainty, bred and confirmed, meteorite

Twin brothers, desolate and lonely, suddenly

Wandering around, commonplace, hundreds of

Ask the students to continue reading the text and look for the reasons.

(1) The fatal flaw of Mars itself.

(2) Mars is much smaller than the Earth and has a much smaller attraction to objects.

The reason why the water on Mars cannot be retained is that Mars is much smaller than the Earth and its attraction to objects is much smaller, so the gas does not need to escape from Mars too fast. Under the irradiation of the sun, the water on the surface of Mars evaporates into gas. These gases quickly gain enough heat to reach a speed that can leave Mars and never return.

Water is the source of life, and life on earth can continue to thrive; if water cannot be retained on the surface of Mars, then there will definitely be no life. what you think? What do scientists think?

However, scientists speculate that there may still be water below the surface of Mars, and as long as there is the right temperature, life may be born.

Text summary:

What kind of mystery is the existence or non-existence of life on Mars? Do you want to know? So, please learn scientific and cultural knowledge well and try to explore it. The door to science is open for you.

Extracurricular homework

1. Copy good words and sentences in the article.

2. Extracurricular collection: How much knowledge about the universe do you know.

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For more information about the "Twin Brothers of Mars and Earth" PPT courseware, please click the "Twin Brothers of Mars and Earth" ppt tag.

"Mars—Twin Brother of Earth" PPT courseware 4:

"Twin Brothers of Mars and Earth" PPT courseware 4 Pronunciation of the pronunciation is accurate: lava steam canyon defect wrapped in vague pregnancy confirmed meteorite twin brothers desolate and lonely sudden appearance wandering around commonplace food hundreds... Requirements: (1) can ..

"Mars—Twin Brother of Earth" PPT courseware 3:

"Twin Brothers of Mars and Earth" PPT Courseware 3 Evaporation Dry Drilling Comet Meteor Lava Obscurity Coerced Sudden Commonplace... Think about it: Why does the text call Mars and Earth twin brothers? Ask students to read the text freely with questions..

"Mars - Earth's "Twin"" Flash animation courseware:

"Twin Brothers of Mars and Earth" Flash animation courseware More than 4 billion years ago, Mars and the Earth gradually formed. The two brothers look so alike. They have the same Antarctic and North Pole, the same mountains and canyons, the same white clouds, dust storms and tornadoes, the same four distinct seasons, even...

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Update Time: 2024-08-01

This template belongs to Chinese courseware Jiangsu Education Edition Chinese Language for Fifth Grade Volume 2 industry PPT template

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