After watching ＂The Wandering Earth 2＂, there are some water-related knowledge points to answer your questions!

After 4 years

"The Wandering Earth 2" returns to the movie Spring Festival

Bring a visual feast to the audience at the same time

It also brought you a lot of "hard core" knowledge points

What is the Roche limit?

Where does the power of the planetary engine come from?

Many viewers are still confused after watching the movie

There are many questions that need to be answered urgently

Here, the editor has carefully prepared

Some water-related knowledge points in movies

Come and learn knowledge together!

Why do space elevators need to use ice shields to return to the atmosphere?

In The Wandering Earth 2, the space elevator soars into the sky

It can be called a "cosmic highway"

The scene of the space elevator going back and forth also made the audience hooked

The scene in the movie where the space elevator returns to the atmosphere

The disposable thermal insulation tiles currently used in aerospace are not applied

Instead, they designed "ice shields" for space elevators

Space elevator footage

Returning to the ground from space causes friction with the atmosphere to generate heat

If the elevator is allowed to return to the atmosphere

First spray a large amount of water to freeze

Theoretically, it could form a protective shield

Absorbs heat generated by friction and reduces impact

And this takes advantage of the heat resistance and strength of ice.

How strong can ice be?

The cooler the temperature, the harder the ice.

At minus 50 degrees Celsius

Ice is harder than steel on the Mohs scale.

Every winter

There will be floods in the Yellow River

Some sections of the river are even frozen

If you encounter the upstream river, thaw it first

And the ice in the lower channel remains solid

Explosives are often used or bombers blow up ice

Resolve the danger of flood

Anti-ice blasting scene in Huma River section of Heilongjiang

Why is there air under water?

Later in the video, in order to restart the root server of the global Internet

The protagonist of the movie dives into the submerged sea

Beijing Internet Network Information Center

Accidentally discovered that there is a space with air in the building

dive fragment

These empty spaces.

They’re called cavities.

Also known as "underwater refuge" by divers

Here divers can rest and draw oxygen

"Gas chambers" often appear in underwater caves

According to the principle of air pressure, if there is a pressure difference between inside and outside

When the water is full, it may produce a

Space with a lot of gas

What would the earth be like without the moon?

In the movie, the planetary engine on the moon is damaged

The moon deviated from its orbit and crashed into the earth

Humans finally placed more than 3,000 nuclear bombs on the moon

Explode the moon, the moon turns to pieces

Lunar detonation fragment

What would happen if the earth lost the moon? Do you know?

One, the tides change. There’s a tsunami.

The tidal phenomena on Earth are mainly caused by the attractive force of the moon

Once the moon’s attractive force disappears

It is difficult to maintain the original tidal strength by the attractive force of the sun alone

Seawater will redistribute and the attractive force distribution of the crust will change

This could lead to geological and meteorological disasters such as tsunamis

Tsunami footage

Second, the Earth’s water vapor cycle is broken

Further triggering climate disasters such as floods and droughts

The Wandering Earth 2

On the one hand, bring

Audience’s ultimate audio-visual enjoyment

On the other hand, there is also a deep reflection on the current climate change

Keep us awake

The importance and urgency of protecting our planet

Protect the ecological environment

Start today.

Don’t let the disaster scenes in the film

Becoming the true future of the earth

Source: China Water Affairs

Discovery of water and marine violations

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