Question 1

Large doses of _______________ light can cause sunburn and skin cancers.

Accepted Answer

The answer of Large doses of _______________ light can cause...

Question 2

Match between columns
                        Premises: Very Large Array
Keck Observatory
James Webb Space Telescope
Yerkes Observatory
Arecibo Telescope
HST
Chandra
SOFIA

Accepted Answer

The Answer of A space telescope that detects X-rays and is...

Question 3

It is a common misconception that the purpose of an astronomical telescope is to _______________ images .

Accepted Answer

The answer of It is a common misconception that the...

Question 4

What are the three factors which can limit the resolving power of a telescope?

Accepted Answer

The answer of What are the three factors which can...

Question 5

What must be used to maintain the optics and operation of an infrared telescope?

Accepted Answer

Infrared telescopes rely on cooled infrared detectors to function properly. Without proper cooling, the detectors would produce noise that would overwhelm any faint signals they were meant to detect. Coolant is used to maintain the temperature of the detector and instrument.

Question 6

A lens called the _______________ is typically used to magnify the image and make it convenient to view distant objects.

Accepted Answer

The answer of A lens called the _______________ is typically...

Question 7

Explain the difference between cosmic rays and electromagnetic radiation, and how cosmic particles are captured.

Accepted Answer

The answer of Explain the difference between cosmic rays and...

Question 8

The Very Large Array radio telescope in New Mexico is an example of the use of which astronomical technique?

Accepted Answer

The Very Large Array radio telescope uses interferometry, which involves combining signals from multiple telescopes to create a single, high-resolution image. This technique allows astronomers to achieve a higher angular resolution than would be possible with a single telescope, making it ideal for studying objects such as distant galaxies and quasars.

Question 9

A spectrograph spreads out light according to ____ to form a spectrum.

Accepted Answer

A spectrograph spreads out light according to wavelength to form a spectrum.

Question 10

All large astronomical telescopes built since the start of the 20th century have been _______________ telescopes.

Accepted Answer

The answer of All large astronomical telescopes built since the...

Question 11

Why is magnifying power the least important of the three powers of a telescope?

Accepted Answer

The answer of Why is magnifying power the least important...

Question 12

What are the advantages of putting telescopes in space?  Provide specific examples of three current space telescopes.

Accepted Answer

The answer of What are the advantages of putting telescopes...

Question 13

Optical telescopes are intended for the study of _______________ light.

Accepted Answer

The answer of Optical telescopes are intended for the study...

Question 14

One way to measure and compare the strength of the radio signal at various places in the sky is to produce a(n) _______________ in which each color marks areas of similar radio intensity.

Accepted Answer

The answer of One way to measure and compare the...

Question 15

Why aren't optical or radio telescopes used in particle astronomy, which studies cosmic waves and gravity waves?

Accepted Answer

The answer of Why aren't optical or radio telescopes used...

Question 16

What technique often requires the use of a laser guide star?

Accepted Answer

The answer of What technique often requires the use of...

Question 17

Built in 1963, the _______________ telescope in Puerto Rico is the largest single radio dish in the world.

Accepted Answer

The answer of Built in 1963, the _______________ telescope in...

Question 18

A optical distortion of refracting telescopes called _______________ causes a separation of colors, such as when you focus on one color, the other colors in an image are blurred.

Accepted Answer

The answer of A optical distortion of refracting telescopes called...

Question 19

Light-gathering power is proportional to the _______________ of the telescope primary lens or mirror.

Accepted Answer

The answer of Light-gathering power is proportional to the _______________...

Question 20

Which form of radiation has the lowest frequency?

Accepted Answer

The answer of Which form of radiation has the lowest...

Quiz 6: Light and Telescopes