B2 中高级 English 9:29 1,487 单词 Science & Tech

The Most Extreme Explosion in the Universe

Kurzgesagt · 10,796,838 次观看 · Added 5 小时前

Learning Stats

B2

CEFR 等级

1,487

Total Words

575

Unique Words

6/10

难度

Vocabulary Diversity 39%

字幕 (200 segments)

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00:00

supern noi are the most powerful

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explosions in the universe unleashing

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enough energy to outshine galaxies we

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have no real metaphor for their power if

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the sun were to magically go supernova

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it would feel like you were being hit by

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the energy of a nuclear explosion every

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second for

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weeks while supern noi are the engines

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of creation forging the elements that

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enable life they also burn sterile whole

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regions of galaxies so what would happen

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if if one hit

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[Music]

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Earth there are roughly speaking two

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ways to make a supernova either the core

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of a massive star implodes or less

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common a white dwarf gains Mass to the

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point where it ignites explosive nuclear

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fusion the outcome is the same a

Full subtitles available in the video player

Key Vocabulary (18)

away A1 adverb

To be at a distance from a particular person, place, or thing. It is also used to indicate movement towards a different place or to describe being absent from a location.

extinction B2 noun

Extinction is the state or process of a species, family, or larger group being or becoming extinct, meaning it no longer has any living members. It can also refer to the act of making something, such as a fire, a feeling, or a practice, cease to exist.

ozone B2 verb

Ozone is a colorless gas found in the upper atmosphere that protects the Earth from harmful ultraviolet radiation. It is also produced at ground level as a pollutant when sunlight reacts with industrial emissions.

layer B2 noun

A layer is a single thickness, sheet, or level of a material that covers a surface or is placed between other things. It can refer to physical substances like paint and geological strata, or abstract levels of complexity and meaning.

close A1 verb

To stop a computer program, application, or digital window from running or being visible on the screen. It can also mean to physically shut a device, such as a laptop lid.

"I close every day."

light A1 adjective

Describes a space that has a lot of natural brightness or many windows. It also refers to colors that are pale or close to white rather than dark.

"This is very light."

gas A1 noun

Gas is a substance like air that is used as a fuel for heating or cooking in many homes. It is a state of matter that is neither solid nor liquid and flows easily through pipes.

"The gas is important."

star A1 noun

A star is a very large ball of burning gas in space that looks like a small point of light in the night sky. In a broader sense, it can also refer to a famous person in movies, music, or sports.

"The star is important."

enough A1 noun

The amount or quantity of something that is as much as is needed or required. It indicates that no more is necessary to achieve a goal or satisfy a desire.

"The enough is important."

radiation A1 noun

Radiation is energy that travels through space as waves or very small particles. It comes from natural sources like the sun and from machines like X-rays in hospitals.

stage A1 noun

A raised area or platform in a theater where actors, singers, or dancers perform for an audience. It can also refer to a specific point or period in a process or development.

life
years
supernova
earth
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