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All About Telescopes Trivia Quiz

Are you sure that you know as much as you think you know about telescopes?

A multiple-choice quiz by ohlavash. Estimated time: 3 mins.

Author
ohlavash

Time
3 mins

Type
Multiple Choice

Quiz #
232,369

Updated
Dec 03 21

# Qns
10

Difficulty
Tough

Avg Score
6 / 10

Plays
638

One at a Time - Single Page - Timed Game

Question 1 of 10

1. What is the most important thing to consider when choosing a telescope? Hint

aperture

length

size

brand

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Question 2 of 10

2. Who invented the first telescope? Hint

Hans Lippershey

Leonardo DaVinci

Galileo Galilei

Ptolemy

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Question 3 of 10

3. Refracting telescopes use lenses to magnify an image.

True

False

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Question 4 of 10

4. What type of telescope uses both lenses and mirrors to magnify the image? Hint

catadioptric system

refracting

reflecting

double telescope

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Question 5 of 10

5. To focus more light, and to create a brighter image, the mirrors in the telescope tube should be which of these? Hint

bigger

thinner

thicker

smaller

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Question 6 of 10

6. The magnification of the object is dependent largely on which of these? Hint

the primary mirror

size of the scope

eye-piece

the thickness of the mirror

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Question 7 of 10

7. Which of the following is a telescope that is not based on visible light rays? Hint

catadioptric system

refracting

radio telescope

reflecting

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Question 8 of 10

8. Radio telescope waves are generally processed by which of these? Hint

the human eye

NASA officials

sound

a computer

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Question 9 of 10

9. A convex lens is thin in the middle, thick around the edges and makes parallel rays of light diverge.

True

False

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Question 10 of 10

10. What type of telescope is the Hubble? Hint

refracting

reflecting

catadioptric system

radio

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Quiz Answer Key and Fun Facts

1. What is the most important thing to consider when choosing a telescope?

Answer: aperture

Although the biggest telescope may seem to be the best, don't bet on it. Aperture refers to a telescopes main optical lens or mirror. This relates directly to the light gathering and maximum resolving power of a telescope.

2. Who invented the first telescope?

Answer: Hans Lippershey

The first telescopes used for astronomy were used by Galileo Galilei. Before his time they were used for navigation.

3. Refracting telescopes use lenses to magnify an image.

Answer: True

The lenses for refracting telescopes are specially ground so that the edges are thinner than in the middle.

4. What type of telescope uses both lenses and mirrors to magnify the image?

Answer: catadioptric system

In the 1930s, another type of telescope was put to use at some observatories. Using both mirrors and lenses, this telescope can make the image clearer.

5. To focus more light, and to create a brighter image, the mirrors in the telescope tube should be which of these?

Answer: bigger

Besides that, the bigger the telescope, the easier it will be to distinguish between two separate images.

6. The magnification of the object is dependent largely on which of these?

Answer: eye-piece

Although the size of the scope does matter, the most important factor is the magnification of the eye-piece.

7. Which of the following is a telescope that is not based on visible light rays?

Answer: radio telescope

A radio telescope looks a little like a telescope. The tube and eyepiece are not present, although the educated observer will see that the essentials are there. There is a concave reflecting device at one end, and there is a point at which the waves can be concentrated to form an image. An example could be a satellite dish on your roof.

8. Radio telescope waves are generally processed by which of these?

Answer: a computer

The radio waves, after processing, can generate detailed images of the surface area and composition of the objects upon which they are directed.

9. A convex lens is thin in the middle, thick around the edges and makes parallel rays of light diverge.

Answer: False

The difference between concave and convex lenses is: concave lenses make rays of light diverge and are thinner in the center than around the edges. Convex lenses make them converge and are thinner around the edges than in the middle.

10. What type of telescope is the Hubble?

Answer: reflecting

Since the Hubble's launch in 1990, it has helped to triple our knowledge about the universe.

Source: Author ohlavash

This quiz was reviewed by FunTrivia editor crisw before going online.
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