CAPA Chapter 6 Test Questions with Correct Answers
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CAPA Chapter 6 Test Questions with Correct Answers
What does 'angular resolution' measure?
A) The angular size of the smallest features that the telescope can see.
B) The brightness of an image.
C) The size of an image.
D) The number of electromagnetic waves captured by an image.
E) The ...
capa chapter 6 test questions with correct answers
what does angular resolution measure
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CAPA Chapter 6 Test Questions
with Correct Answers
What does 'angular resolution' measure?
A) The angular size of the smallest features that the telescope can see.
B) The brightness of an image.
C) The size of an image.
D) The number of electromagnetic waves captured by an image.
E) The average size of the galaxies found in the image. - Answer- A) The angular size
of the smallest features that the telescope can see.
Which of the following is always true about images captured with X-ray telescopes?
A) They are always blue.
B) They are always shown with colors that are NOT the true colors of the objects that
were photographed.
C) They always have very high angular resolution.
D) They show us light with extremely long wavelengths.
E) They always are made with adaptive optics. - Answer- B) They are always shown
with colors that are NOT the true colors of the objects that were photographed.
Which of the following forms of light can be observed with telescopes at sea level?
Select all that apply.
A) infrared light.
B) Visible light.
C) Ultraviolet light.
D) X-rays.
E) Radio waves. - Answer- A) infrared light.
B) Visible light.
E) Radio waves.
If your eyes were sensitive only to X-rays, the world would appear _______.
A) Brighter than normal because X-rays carry more energy than visible light photons.
B) Green, yellow, and orange, because those are the colors of X-rays.
C) Blurry, because they couldn't focus X-rays that well.
D) Grey, black, and white, like medical X-ray images.
E) Dark, because X-ray light does not reach Earth's surface. - Answer- E) Dark,
because X-ray light does not reach Earth's surface.
, If you had only one telescope and wanted to take both visible-light and ultraviolet
pictures of stars, where should you locate your telescope?
A) In a desert.
B) In an airplane.
C) On Earth's surface.
D) In space.
E) On a tall mountain. - Answer- D) In space.
What do astronomers mean by 'light pollution'?
A) It is the excess of sunlight scattered by the Earth's atmosphere at dusk or dawn.
B) It is a term used to describe the appearance of the sky in regions that are crowded
with stars.
C) It is a type of air pollution created by lightweight gases such as hydrogen and helium.
D) It is light from human sources that makes it difficult to see the stars at night.
E) It means contamination of light caused by chemicals in Earth's atmosphere. -
Answer- D) It is light from human sources that makes it difficult to see the stars at night.
Which of the following effects is caused by atmospheric turbulence?
A) twinkling of stars.
B) light pollution.
C) dimming of stars.
D) diffraction of light.
E) magnification of images. - Answer- A) twinkling of stars.
The first image on the left shows what appears to be a single star. The second image
on the right shows the same object, now revealed to be two distinct stars. What is the
difference between the two photos?
A) The second image was taken with a telescope that has greater light-collecting area.
B) The first image was taken by a space telescope while the second one was obtained
with a ground-based telescope.
C) The second image comes from a radio telescope while the first image comes from a
visible-light photo.
D) The second image was taken by two telescopes rather than one.
E) The second image has netter (smaller) angular resolution than the first image. -
Answer- E) The second image has netter (smaller) angular resolution than the first
image.
Suppose that two stars are separated in the sky by 0.1 arcsecond. If you look at them
with a telescope that has an angular resolution of 0.6 arcsecond, what will you see?
A) Nothing at all, only darkness.
B) Both stars will be seen only if they have different colors.
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