Use the scenario to answer the question.
An astronomer discovers a new galaxy using a telescope. The astronomer wants to investigate how the galaxy is moving relative to the Milky Way galaxy.
In one or two sentences, make a hypothesis about the movement of the galaxy and explain at least one way to test the hypothesis.
(2 points)
Short Answer Rubric (2 points)
Points Awarded Criteria
2
The answer is very clear.
The answer is fully supported by details.
There may be a few errors in grammar, usage, or mechanics. Errors do not interfere with meaning.
1
The answer is somewhat clear.
Details are weak or not related.
There are some errors in grammar, usage, and mechanics. Errors interfere with meaning.
0 The question is not answered.
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Hypothesis: The new galaxy is moving away from the Milky Way galaxy.
One way to test this hypothesis is by using the Doppler effect. The astronomer can analyze the spectrum of light emitted by the new galaxy, looking for a redshift, which would indicate that the galaxy is moving away from us.
Hypothesis: The new galaxy is moving away from the Milky Way galaxy.
One way to test this hypothesis is by measuring the redshift of the light coming from the new galaxy. If the light is redshifted, it indicates that the galaxy is moving away from us.
Hypothesis: The galaxy is moving away from the Milky Way galaxy.
One way to test this hypothesis is to measure the redshift of light coming from the galaxy. If the galaxy is moving away, the light waves will be stretched, resulting in a shift towards the red end of the spectrum. By analyzing the spectra of the galaxy's light, astronomers can determine its velocity and direction of motion relative to the Milky Way.