"Mars-Earth's Twin Brother" PPT Courseware 3

Description

"Mars—Twin Brother of Earth" PPT Courseware 3

evaporate dry bore comet

Meteor, lava, vague, enveloping

Sudden occurrence and common occurrence

think about it

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

Ask the students to read the first paragraph freely and think about how they can see that Mars and the Earth are "twin brothers."

The two brothers look so much 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, and even the length of a day is almost the same.

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 evaporated into gas. These gases quickly gained enough heat to reach a speed that could leave Mars and never return.

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

In this composite electron micrograph taken on February 26, bacteria on Earth (top) look strikingly similar to crystals in Martian meteorites (bottom). An international research team responsible for studying Martian meteorites analyzed a potato-sized Martian meteorite found in Antarctica and found that it contained magnet crystals arranged in long chains. According to NASA personnel, this chain-like structure can only be composed of once-living organisms.

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.

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

"Mars—Twin Brother of Earth" PPT courseware 5:

"Twin Brothers of Mars and Earth" PPT Courseware 5 Think about it: Why does the text call Mars and Earth twin brothers? Ask students to read the text freely with questions. Pronounce the correct pronunciation: lava, steam, canyon, defect, coercion, uncertainty, gestation, confirmation, meteorite, twin brothers...

"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 twins desolate and lonely suddenly wandering around and commonplace hundreds... Requirements: (1) Yes ..

"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: 2024-11-22

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

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