Explain how the Doppler effect is used to estimate the speeds of far-off objects.
4th Quarter 4th Summative in Physical Science

Quiz
•
English
•
12th Grade
•
Easy
CINHS DEPARTMENT
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The Doppler effect is used to estimate the speeds of far-off objects by analyzing the frequency shift of waves emitted or reflected by these objects.
The Doppler effect is used to estimate the speeds of far-off objects by measuring their temperature changes.
The Doppler effect is used to estimate the speeds of far-off objects by observing their color changes.
The Doppler effect is used to estimate the speeds of far-off objects by analyzing their gravitational pull.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Describe the concept of redshift and how it is related to the distance of celestial objects.
Redshift decreases as the distance of celestial objects increases
Redshift is related to the distance of celestial objects as the redshift value increases with the distance of the object from Earth.
Celestial objects closer to Earth have higher redshift values
Redshift is not related to the distance of celestial objects
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the cosmic distance ladder and how does it help in determining the distances of far-off objects?
The cosmic distance ladder helps in determining the distances of far-off objects by providing a step-by-step approach using different methods to measure distances accurately.
The cosmic distance ladder is a metaphorical ladder that astronomers use to visualize distances in space.
The cosmic distance ladder is a physical ladder used to climb to space and measure distances directly.
The cosmic distance ladder relies solely on theoretical calculations without any observational data.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Discuss the role of parallax in measuring the distances to nearby stars.
Parallax is only applicable to measuring distances within our solar system, not to stars.
Parallax is a method used to measure the brightness of stars, not their distances.
Parallax is used in measuring the distances to nearby stars by observing the apparent shift in position of the star from two different points in Earth's orbit around the Sun, allowing astronomers to calculate the distance using trigonometry.
Parallax is a technique that relies on the color of stars, not their position.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do astronomers use standard candles to estimate the distances to galaxies?
By tasting the brightness of the candles
By counting the number of candles in the galaxy
By measuring the weight of the candles
By comparing the intrinsic brightness of standard candles with the observed brightness and applying the inverse square law of light.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Explain the significance of Hubble's law in determining the distances of galaxies.
Hubble's law is used to determine the color of galaxies
Hubble's law helps in calculating the age of galaxies
Hubble's law is related to the rotation speed of galaxies
Hubble's law allows astronomers to determine galaxy distances by relating their recessional velocities to their distances from Earth.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are some of the challenges faced in accurately estimating the distances of objects in the universe?
Interstellar dust, black hole interference, Doppler shift
Quantum entanglement, magnetic field interference, cosmic microwave background
Dark matter effects, atmospheric distortion, time dilation
Cosmic expansion, gravitational lensing, limited telescope resolution
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