Case Study: S.Chandrasekhar

Subrahmanyan Chandrasekhar - black holes and x-ray telescopes.

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Quiz:

Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Question 1

Question 1

Question 1

Question 2

Question 2

Question 3

Question 3

Question 4

Question 4

Question 4

Question 5

Question 5

Question 5

Question 5

Question 6

Question 6

Question 6

Question 7

Question 8

Question 8

Question 9

Question 9

Q1.Match the celestial object up with the descriptions.

Earth

The Sun

The Milky Way

The Solar System

Nebula

1/9

Q2.Select the stage of a star's life cycle that immediately precedes a supernova explosion.

2/9

Q3.Calculate (to 2 significant figures) the wavelength of microwaves with a frequency of 2.5 x 10⁹Hz. (speed of light = 3.0 x 10⁸m/s)

3/9

Q4.As a dwarf planet moves further from the Sun, which option is correct?

4/9

Q5.The elements formed in a red supergiant could include... (use a periodic table if you need to)

5/9

Q6.A distant galaxy has an extremely high value of red shift. Which of these could NOT be true about the galaxy? (Choose 2)

Select two (2) boxes

6/9

Q7.Dark matter and dark energy are ideas for...

7/9

Q8.The two pieces of scientific data that are evidence for supporting a Big Bang origin of the universe are: (choose 2)

Select two (2) boxes

8/9

Q9.Put these in order of size, largest first.

iron atom

galaxy

universe

Earth

the object that makes a black hole

Sun

human

hydrogen nucleus

9/9

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Question 1

Question 1

Question 1

Question 2

Question 2

Question 3

Question 3

Question 4

Question 4

Question 4

Question 5

Question 5

Question 5

Question 5

Question 6

Question 6

Question 6

Question 7

Question 8

Question 8

Question 9

Question 9

Q1.Match the celestial object up with the descriptions.

Earth

The Sun

The Milky Way

The Solar System

Nebula

1/9

Q2.Select the stage of a star's life cycle that immediately precedes a supernova explosion.

2/9

Q3.Calculate (to 2 significant figures) the wavelength of microwaves with a frequency of 2.5 x 10⁹Hz. (speed of light = 3.0 x 10⁸m/s)

3/9

Q4.As a dwarf planet moves further from the Sun, which option is correct?

4/9

Q5.The elements formed in a red supergiant could include... (use a periodic table if you need to)

5/9

Q6.A distant galaxy has an extremely high value of red shift. Which of these could NOT be true about the galaxy? (Choose 2)

Select two (2) boxes

6/9

Q7.Dark matter and dark energy are ideas for...

7/9

Q8.The two pieces of scientific data that are evidence for supporting a Big Bang origin of the universe are: (choose 2)

Select two (2) boxes

8/9

Q9.Put these in order of size, largest first.

iron atom

galaxy

universe

Earth

the object that makes a black hole

Sun

human

hydrogen nucleus

9/9

Video

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Worksheet

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This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

S. Chandrasekhar

This quiz will test your understanding of the topic in the lesson, and prior knowledge from earlier in this topic.

Question 1

Question 2

Question 2

Question 2

Question 3

Question 3

Question 4

Question 4

Question 5

Question 5

Question 6

Q1.In which country was Chandra born?

1/6

Q2.Which option best describes Chandra's most significant discovery?

2/6

Q3.The order of the stages of a star's life that ends in a neutron star is...

nebula

red supergiant

protostar

supernova

main sequence

3/6

Q4.An X-ray observatory must be placed in orbit above the Earth because....

4/6

Q5.It is worthwhile to observe astronomical events in the X-ray region of the spectrum because...

5/6

Q6.The Sun's mass is 2.0 x 10³⁰kg. The Chandrasekhar limit in solar masses is 1.4. Calculate the Chandrasekhar limit in kg.

6/6

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

S. Chandrasekhar

This quiz will test your understanding of the topic in the lesson, and prior knowledge from earlier in this topic.

Question 1

Question 2

Question 2

Question 2

Question 3

Question 3

Question 4

Question 4

Question 5

Question 5

Question 6

Q1.In which country was Chandra born?

1/6

Q2.Which option best describes Chandra's most significant discovery?

2/6

Q3.The order of the stages of a star's life that ends in a neutron star is...

nebula

red supergiant

protostar

supernova

main sequence

3/6

Q4.An X-ray observatory must be placed in orbit above the Earth because....

4/6

Q5.It is worthwhile to observe astronomical events in the X-ray region of the spectrum because...

5/6

Q6.The Sun's mass is 2.0 x 10³⁰kg. The Chandrasekhar limit in solar masses is 1.4. Calculate the Chandrasekhar limit in kg.

6/6

Lesson summary: Case Study: S.Chandrasekhar

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