Radiation astronomy/Microwaves/Quiz

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This image shows the variations in the lunar gravity field as measured by NASA's Gravity Recovery and Interior Laboratory (GRAIL) during the primary mapping mission from March to May 2012. Credit: NASA/JPL-Caltech/MIT/GSFC.

Microwave astronomy is a lecture from the astronomy department that is included in the course principles of radiation astronomy.

You are free to take this quiz based on microwave astronomy at any time.

To improve your score, read and study the lecture, the links contained within, listed under See also, External links, and in the {{principles of radiation astronomy}} template. This should give you adequate background to get 100 %.

As a "learning by doing" resource, this quiz helps you to assess your knowledge and understanding of the information, and it is a quiz you may take over and over as a learning resource to improve your knowledge, understanding, test-taking skills, and your score.

Suggestion: Have the lecture available in a separate window.

To master the information and use only your memory while taking the quiz, try rewriting the information from more familiar points of view, or be creative with association.

Enjoy learning by doing!

Quiz[edit]







  

1

Complete the text:

In the case of electric

radiation, the associated fluctuation in angular

is due to absorption of and decays stimulated by

photons (dominated by Cosmic Microwave Background (CMB) photons in the

interstellar

(ISM).

2

Yes or No, Locations exist which have a lower temperature than the CMB.

Yes
No

3

Complete the text:

Match up the letter with the frequency range possibilities below:
microwaves - L
SHF - M
UHF - N
EHF - O
RF - P
Submillimeters - Q
IR - R
Visible rays - S
UV - T
X-rays - U
γ-rays - V
30 PHz to 30 EHz

.
0.3 GHz to 300 GHz

.
300 GHz to 3 THz

.
790 THz to 30 PHz

.
300 MHz to 3 GHz

.
300 GHz to 430 THz

.
> 30 EHz

.
30 to 300 GHz

.
430 THz to 790 THz

.
3 kHz to 300 GHz

.
3 to 30 GHz

.

4

True or False, Radio rays have wavelengths of one millimeter or more.

TRUE
FALSE

5

Complete the text:

Astronomers place the submillimetre waveband between the

and

wavebands, typically taken to be between a few hundred micrometres and a millimetre.

6

Yes or No, Microwaves have wavelengths of one millimeter or more up to a meter.

Yes
No

7

Which types of radiation astronomy directly observe the rocky-object surface of Venus?

meteor astronomy
cosmic-ray astronomy
neutron astronomy
proton astronomy
beta-ray astronomy
neutrino astronomy
gamma-ray astronomy
X-ray astronomy
ultraviolet astronomy
visual astronomy
infrared astronomy
submillimeter astronomy
radio astronomy
radar astronomy
microwave astronomy
superluminal astronomy

8

Complete the text:

The peak emissivity is enhanced by about 23% for the

(WIM) and only 11 % for the

(WNM), although the peak frequency remains unchanged.

9

True or False, The position of the Sun can be determined directly with the use of microwave astronomy.

TRUE
FALSE

10

Complete the text:

The cosmic microwave background radiation is a

glow that fills the

in the

part of the

.


Hypotheses[edit]

  1. Microwaves may have been used more extensively to study the Solar System.

See also[edit]

External links[edit]

{{Principles of radiation astronomy}}