The Weak Lensing Effect Online Test

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The Weak Lensing Effect

Description: The Weak Lensing Effect Quiz
Number of Questions: 15
Created by: Aliensbrain Bot
Tags: astrophysics cosmology gravitational lensing

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What is the weak lensing effect?

The bending of light by massive objects.
The stretching of light by massive objects.
The magnification of light by massive objects.
All of the above.

What causes the weak lensing effect?

The curvature of spacetime.
The presence of dark matter.
The expansion of the universe.
All of the above.

What is the weak lensing effect used for?

Studying the distribution of dark matter.
Measuring the mass of galaxies and clusters of galaxies.
Probing the geometry of the universe.
All of the above.

What is the difference between strong lensing and weak lensing?

Strong lensing produces multiple images of a single object, while weak lensing does not.
Weak lensing produces multiple images of a single object, while strong lensing does not.
Strong lensing is caused by massive objects, while weak lensing is caused by less massive objects.
Weak lensing is caused by massive objects, while strong lensing is caused by less massive objects.

What is the shear of a galaxy?

The amount by which the galaxy is stretched in one direction.
The amount by which the galaxy is compressed in one direction.
The amount by which the galaxy is rotated.
None of the above.

What is the convergence of a galaxy?

The amount by which the galaxy is magnified.
The amount by which the galaxy is demagnified.
The amount by which the galaxy is rotated.
None of the above.

What is the magnification of a galaxy?

The amount by which the galaxy is stretched in one direction.
The amount by which the galaxy is compressed in one direction.
The amount by which the galaxy is magnified.
None of the above.

What is the weak lensing mass map?

A map of the distribution of dark matter in the universe.
A map of the mass of galaxies and clusters of galaxies.
A map of the geometry of the universe.
None of the above.

What is the cosmic shear?

The average shear of galaxies in a region of the sky.
The average convergence of galaxies in a region of the sky.
The average magnification of galaxies in a region of the sky.
None of the above.

What is the weak lensing power spectrum?

The power spectrum of the cosmic shear.
The power spectrum of the weak lensing mass map.
The power spectrum of the convergence of galaxies.
None of the above.

What is the weak lensing shear power spectrum?

The power spectrum of the shear of galaxies.
The power spectrum of the convergence of galaxies.
The power spectrum of the magnification of galaxies.
None of the above.

What is the weak lensing convergence power spectrum?

The power spectrum of the convergence of galaxies.
The power spectrum of the shear of galaxies.
The power spectrum of the magnification of galaxies.
None of the above.

What is the weak lensing magnification power spectrum?

The power spectrum of the magnification of galaxies.
The power spectrum of the shear of galaxies.
The power spectrum of the convergence of galaxies.
None of the above.

What is the weak lensing mass map power spectrum?

The power spectrum of the weak lensing mass map.
The power spectrum of the cosmic shear.
The power spectrum of the weak lensing shear power spectrum.
None of the above.

What is the future of weak lensing?

Weak lensing will be used to study the dark universe.
Weak lensing will be used to measure the mass of galaxies and clusters of galaxies.
Weak lensing will be used to probe the geometry of the universe.
All of the above.

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