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Main-Sequence Stars and Stellar Evolution

Main-Sequence Stars and Stellar Evolution

Assessment

Interactive Video

Science, Physics

6th - 10th Grade

Practice Problem

Easy

Created by

Ethan Morris

Used 9+ times

FREE Resource

The video explores the life cycle of a low-mass star, starting from a nebula, progressing through stages like protostar, main sequence, and red giant, and ending as a white dwarf. It also discusses the theoretical black dwarf stage. The video emphasizes the vastness of the universe, with billions of stars and galaxies, and encourages viewers to engage with more content.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many stars are estimated to be in the Milky Way galaxy?

30 billion

3 trillion

300 billion

300 million

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the initial stage of a star called before hydrogen starts burning?

Protostar

White dwarf

Main-sequence star

Red giant

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What percentage of known stars are main-sequence stars?

100%

90%

70%

50%

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to a main-sequence star when it runs out of hydrogen?

It turns into a red giant

It becomes a protostar

It forms a black hole

It becomes a white dwarf

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the temperature of a red giant's outer layer?

40000 Kelvin

20000 Kelvin

10000 Kelvin

5000 Kelvin

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What celestial bodies will the Sun absorb as it becomes a red giant?

Venus and Earth

Mercury and Venus

Earth and Mars

Mars and Jupiter

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is formed when the outer shells of a red giant separate from its core?

A black hole

A neutron star

A supernova

A planetary nebula

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