Cosmic Microwave Background Radiation (CMBR)

In this lesson we will focus on the understanding of the cosmic microwave background radiation and how this provides evidence for the origins of the Universe.

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 2

Question 3

Question 4

Question 5

Q1.A source of waves shows a red-shift. This means that....

1/5

Q2.DIstant galaxies are redshifted. This means that...

2/5

Q3.The spectrum on the left shows the light emitted by a source on Earth. The spectrum on the right shows the same type of light emitted by a distant galaxy. From this evidence we can conclude... (choose 3)

Select three (3) boxes

3/5

Q4.Hubble discovered that...

4/5

Q5.Light from nearby galaxy was split into a visible spectrum, and the characteristic lines associated with sodium, normally in the yellow part of the spectrum, appeared in the orange part of the spectrum. From this, we can conclude...

5/5

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 2

Question 3

Question 4

Question 5

Q1.A source of waves shows a red-shift. This means that....

1/5

Q2.DIstant galaxies are redshifted. This means that...

2/5

Q3.The spectrum on the left shows the light emitted by a source on Earth. The spectrum on the right shows the same type of light emitted by a distant galaxy. From this evidence we can conclude... (choose 3)

Select three (3) boxes

3/5

Q4.Hubble discovered that...

4/5

Q5.Light from nearby galaxy was split into a visible spectrum, and the characteristic lines associated with sodium, normally in the yellow part of the spectrum, appeared in the orange part of the spectrum. From this, we can conclude...

5/5

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:

Cosmic Microwave Background Radiation (CMBR)

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

Question 1

Question 1

Question 1

Question 1

Question 1

Question 2

Question 3

Question 3

Question 3

Question 3

Question 4

Question 4

Question 5

Q1.In the equations v = fλ and f = 1/T, identify the units for each quantity in the grid.
velocity, v
frequency, f
λ, wavelength
T, period

1/5

Q2.Calculate the frequency of the CMBR if the wavelength is 3.0mm. (speed of light = 3.0 x 10⁸m/s)

2/5

Q3.Choose the correct times in history for these discoveries.
CMBR detected by Penzias and Wilson
measurement of red shift of galaxies by Hubble
discovery of accelerating expansion of the universe
Sun at the centre of the Solar System

3/5

Q4.The ancient light from the early universe set out on its journey 380,000 years after the Big Bang. It can now be detected in the ___________ region of the electromagnetic spectrum due to ______ shift as space has been ___________ .

4/5

Q5.If data and evidence do not agree with an accepted scientific idea/theory, ......... (Choose 3 that could complete the sentence.)

Select three (3) boxes

5/5

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:

Cosmic Microwave Background Radiation (CMBR)

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

Question 1

Question 1

Question 1

Question 1

Question 1

Question 2

Question 3

Question 3

Question 3

Question 3

Question 4

Question 4

Question 5

Q1.In the equations v = fλ and f = 1/T, identify the units for each quantity in the grid.
velocity, v
frequency, f
λ, wavelength
T, period

1/5

Q2.Calculate the frequency of the CMBR if the wavelength is 3.0mm. (speed of light = 3.0 x 10⁸m/s)

2/5

Q3.Choose the correct times in history for these discoveries.
CMBR detected by Penzias and Wilson
measurement of red shift of galaxies by Hubble
discovery of accelerating expansion of the universe
Sun at the centre of the Solar System

3/5

Q4.The ancient light from the early universe set out on its journey 380,000 years after the Big Bang. It can now be detected in the ___________ region of the electromagnetic spectrum due to ______ shift as space has been ___________ .

4/5

Q5.If data and evidence do not agree with an accepted scientific idea/theory, ......... (Choose 3 that could complete the sentence.)

Select three (3) boxes

5/5

Lesson summary: Cosmic Microwave Background Radiation (CMBR)

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