1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kirill [66]
3 years ago
15

A star appears to be red in the night sky. Is the star traveling toward the earth or away from the earth? How do we know this? (

Hint: Think about the Doppler effect)
Biology
1 answer:
neonofarm [45]3 years ago
7 0

<u>Answer:</u>

<em>The star is travelling away from the earth.</em>

<u>Explanation:</u>

<em>A star’s temperature largely determines its color. </em>Stars with higher temperature have a bluish color and stars with low temperature appear red in color.  But the color of star that we observe from the earth is different from its actual color.

<em>This variation in color is due to Doppler effect. </em>When the movement of  a star is towards the earth the frequency shifts to the higher frequency region and when the movement is away from the earth the frequency of the light emitted will shift to the lower frequency region. <em>Color of light depends on the frequency. </em>

The color corresponding to the <em>lower frequency region</em> is red and color corresponding to <em>high frequency region</em> is blue. <em>So when the star moves away from the earth it appears red in color.</em>

You might be interested in
a student uses a metric ruler to measure the length of a lizard. Which of these is the students using a gather data?
Damm [24]
Ummmm.....The metric ruler
5 0
3 years ago
The cell carries out normal functions during
Alenkinab [10]

Answer:

A cell carries out it's normal functions during mitosis

6 0
3 years ago
Start with the temperature at 25 ºC and the pH at 7. Do not vary these parameters while testing for substrate (Initial Lactose)
UNO [17]

Answer:

The results show that the increase in the substrate concentration is increasing the rate of the reaction. We can see that the reaction rate has increased to 2.88mM/min. After this even if we increase the substrate concentration

5 0
2 years ago
In humans a gene that has been identifoef as causing a type of skin cancer is the
Gennadij [26K]
It Is The Melanoma Gene .
4 0
3 years ago
A resource is being used by a population.
Ber [7]

i believe the answer to be B

8 0
3 years ago
Other questions:
  • Equilibrium is best defined as a state of _____
    14·2 answers
  • What structures do eukaryotes have that prokaryotes do not?
    5·1 answer
  • How many mL of water would be displaced by 408 g of lead
    8·2 answers
  • Pls help me,Pls help me ,pls help me
    15·1 answer
  • Describe the role of an enzyme. Describe how an enzyme interacts with its substrate.​
    8·1 answer
  • Kevin and his grandparents live in Michigan north of the equator they we're planning vacation to Argentina South America south o
    14·1 answer
  • Label the water Cycle Using
    9·1 answer
  • A growling stomach and the stimulation of hunger represent the
    15·1 answer
  • Please Help
    6·1 answer
  • 3. What are two benefits of using the International System<br> of Units?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!