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Questions 1 - 4 are to be completed while doing the "Shifting Light Spectra Lab Activity" on page 2 of the lesson.



On the Shifting Light Spectra page, change the distance from "Stationary" to "Farther". Which of the following describes what happens to the spectral lines and what does it indicates.

(2 points)
Responses

Spectral lines shift towards the blue end of the spectrum, indicating the item is moving closer
Spectral lines shift towards the blue end of the spectrum, indicating the item is moving closer

Spectral lines shift towards the blue end of the spectrum, indicating the item is moving away
Spectral lines shift towards the blue end of the spectrum, indicating the item is moving away

Spectral lines shift towards the red end of the spectrum, indicating the item is moving away
Spectral lines shift towards the red end of the spectrum, indicating the item is moving away

Spectral lines shift towards the red end of the spectrum, indicating the item is moving closer
Spectral lines shift towards the red end of the spectrum, indicating the item is moving closer
Question 2
Now change the distance to "Closer". Which of the following describes what happens to the spectral lines and what does it indicates.(2 points)
Responses

Spectral lines shift towards the red end of the spectrum, indicating the item is moving away
Spectral lines shift towards the red end of the spectrum, indicating the item is moving away

Spectral lines shift towards the blue end of the spectrum, indicating the item is moving away
Spectral lines shift towards the blue end of the spectrum, indicating the item is moving away

Spectral lines shift towards the blue end of the spectrum, indicating the item is moving closer
Spectral lines shift towards the blue end of the spectrum, indicating the item is moving closer

Spectral lines shift towards the red end of the spectrum, indicating the item is moving closer
Spectral lines shift towards the red end of the spectrum, indicating the item is moving closer
Question 3
Click on "Explore Further" button at the bottom of the page. Click on the different galaxies and explore their spectral shifts. Which galaxy has a blueshift?(2 points)
Responses

Galaxy 1
Galaxy 1

Galaxy 2
Galaxy 2

Galaxy 3
Galaxy 3

Galaxy 4
Galaxy 4
Question 4
When you complete exploring each galaxy, hit the "continue" button at the bottom of the page. Answer the following question:

You have studied the spectra of four sample galaxies and found that three of the four demonstrate red shift. Astronomer Edwin Hubble discovered that only a very few nearby galaxies are moving toward us, demonstrating blue shift. More distant galaxies are all moving away from us, demonstrating red shift as in this example. What does the red shift indicate?

(2 points)
Responses

The universe is diverging and expanding, which supports the big bang theory.
The universe is diverging and expanding, which supports the big bang theory.

The universe is converging and shrinking, which supports the big bang theory.
The universe is converging and shrinking, which supports the big bang theory.

The universe is diverging and expanding, which contradicts the big bang theory.
The universe is diverging and expanding, which contradicts the big bang theory.

The universe is converging and shrinking, which contradicts the big bang theory.
The universe is converging and shrinking, which contradicts the big bang theory.
Question 5
Read page 4 of the lesson and answer the following question: Which galaxy will collide with ours (the Milky Way) in approximately four billion years?(2 points)
Responses

Comet Galaxy
Comet Galaxy

Bode's Galaxy
Bode's Galaxy

Andromeda Galaxy
Andromeda Galaxy

Antennae Galaxy
Antennae Galaxy
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1 answer

Here are the answers based on the concepts of spectral shifts in light:

Question 1: When the distance is changed from "Stationary" to "Farther":

  • Correct Response: Spectral lines shift towards the red end of the spectrum, indicating the item is moving away.

Question 2: When the distance is changed to "Closer":

  • Correct Response: Spectral lines shift towards the blue end of the spectrum, indicating the item is moving closer.

Question 3: To determine which galaxy has a blueshift, you would typically click through the galaxies in the “Explore Further” section. The correct answer can vary based on the specific data presented in that section, but if you have explored the galaxies and identified one that exhibits blueshift:

  • Correct Response: (Select the galaxy that shows a blueshift, e.g., Galaxy 1, Galaxy 2, etc.)

Question 4: What does the red shift indicate?

  • Correct Response: The universe is diverging and expanding, which supports the big bang theory.

Question 5: Which galaxy will collide with ours (the Milky Way) in approximately four billion years?

  • Correct Response: Andromeda Galaxy.

Make sure to verify the specific outcomes of Questions 3 based on what you observed during the lab activity.