Exoplanets and Brown Dwarfs

Exoplanets and Brown Dwarfs

Assessment

Flashcard

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Chemistry

11th Grade

Hard

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15 questions

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1.

FLASHCARD

Front

What is the minimum mass needed for a star to form?

Back

0.075 times the Sun’s mass.

2.

FLASHCARD

Front

At what mass do brown dwarfs start fusing lithium?

Back

65 times Jupiter's mass.

3.

FLASHCARD

Front

What was the mass of Teide 1 compared to Jupiter?

Back

50 times the mass of Jupiter.

4.

FLASHCARD

Front

What is the nearest star to the Sun?

Back

Proxima Centauri.

5.

FLASHCARD

Front

What are 'Super Earths'?

Back

Planets smaller than Mercury but bigger than Earth's Moon.

6.

FLASHCARD

Front

What is a brown dwarf?

Back

A substellar object that is too massive to be a planet but not massive enough to sustain hydrogen fusion like a star.

7.

FLASHCARD

Front

What is the difference between a planet and a brown dwarf?

Back

Planets do not undergo fusion, while brown dwarfs can fuse deuterium and lithium.

8.

FLASHCARD

Front

What is the significance of the habitable zone?

Back

The region around a star where conditions may be right for liquid water to exist on a planet's surface.

9.

FLASHCARD

Front

What is the role of mass in determining a celestial body's classification?

Back

Mass determines whether an object is classified as a planet, brown dwarf, or star based on its ability to undergo nuclear fusion.

10.

FLASHCARD

Front

What is the definition of an exoplanet?

Back

A planet that orbits a star outside our solar system.

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