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Blue Shift and Redshift Concepts

Blue Shift and Redshift Concepts

Assessment

Interactive Video

Physics, Science, Other

9th - 10th Grade

Practice Problem

Hard

Created by

Patricia Brown

FREE Resource

The video tutorial by Alex Miner introduces the concepts of redshift and blueshift, explaining how waves emitted by a moving source affect frequency. The Doppler effect is discussed, highlighting its application to sound and light waves. In astronomy, blue shift occurs when a star moves towards Earth, while redshift happens when it moves away. The cosmological redshift equation is introduced to calculate wavelength shifts. The video also covers the universe's expansion, leading to redshifts, and mentions blue shifts in local galaxies like Andromeda.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to the frequency of waves emitted by a source moving towards an observer?

The frequency fluctuates randomly.

The frequency increases.

The frequency decreases.

The frequency remains the same.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which effect explains the change in frequency of waves due to the motion of the source?

Photoelectric effect

Zeeman effect

Doppler effect

Compton effect

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the term used for a shorter wavelength of light that results in a higher frequency?

Redshift

Blueshift

Greenshift

Yellowsift

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which star is noted for having the greatest blue shift?

Star A-171

Star I-450

Star B-300

Star C-200

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the velocity range of a star moving towards Earth that results in a blue shift?

500 to 1000 km/s

10000 to 15000 km/s

1000 to 5000 km/s

5000 to 10000 km/s

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What equation is used to calculate the wavelength shift in cosmological redshift?

F=ma

P=IV

v = c * (delta lambda / lambda_o)

E=mc^2

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the cosmological redshift equation, what does 'c' represent?

Speed of sound

Speed of light

Speed of the observer

Speed of the source

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