Radiation astronomy/Spectroscopy/Quiz

From Wikiversity
Jump to navigation Jump to search
WMAP 3-year Power spectrum of CMB is compared to recent measurements of BOOMERanG, CBI, VSA and ACBAR. Credit: NASA/WMAP Science Team. {{free media}}

Spectroscopy is a lecture and part of the radiation astronomy department course on the principles of radiation astronomy.

You are free to take this quiz based on neutron 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 | edit source]

  

1 True or False, The focus of the Submillimeter Wave Astronomy Satellite is five spectral lines from water, isotopic water, isotopic carbon dioxide, molecular oxygen, and neutral carbon.

TRUE
FALSE

2 The orange band from molecular calcium chloride is observed in the spectra of many stars of what type?

3 True or False, Neutron spectroscopy has detected hydrogen and thereby water on the Moon.

TRUE
FALSE

4 Which of the following are radiation astronomy phenomena associated with the gaseous-object Neptune?

Voyager 2
blue rays
clouds
neutron emission
polar coronal holes
meteor emission
rotation

5 One of the substances discovered in the tail of Halley's comet by spectroscopic analysis is the toxic gas

6 True or False, Early spectroscopy of the Sun using estimates of line intensities concluded that the Sun is largely composed of deuterium.

TRUE
FALSE

7 "The spectrum of gaseous methane at 77 K in the 1.1-2.6 µm region [is] a benchmark for"

8 Yes or No, The chemical element radium has been mapped by a gamma-ray spectrometer over the rocky surface of the Moon.

Yes
No

9 Which of the following are radiation astronomy phenomena associated with the Sun?

ultraviolet emission
X-ray emission
gamma-ray emission
neutron emission
7Be emission
meteor emission

10 Which of the following are green radiation astronomy phenomena associated with the Sun?

the color of the upper rim as seen from Earth
an excess brightness at or near the edge of the Sun
the iron XIV green line
neutron emission
polar coronal holes
meteor emission
changes in the line-blanketing

11 Which of the following are characteristic of solar green astronomy?

limb faculae
polar coronal holes
black body temperature of the photosphere
the electron neutrino
iron (Fe XIV) green line
neutrons

12 Which of the following are radiation astronomy phenomena associated with the rocky-object Io?

surface regions reflecting or emitting violet or purple
an excess brightness at or near the edge
red regions that may be phosphorus
neutron emission
polar coronal holes
meteor emission
rotation

13 Which of the following are radiation astronomy phenomena associated with the apparent liquid-object Earth?

rain
snow
hail
neutron emission
polar coronal holes
meteor emission
rotation

14 Which of the following are radiation astronomy phenomena associated with the plasma-object the Sun?

coronal clouds
H1- ions
X-rays
neutron emission
polar coronal holes
meteor emission
rotation

15 Which of the following radiation astronomy phenomena are associated with the rocky object Mercury?

apparent impact craters
an excess brightness at or near the edge
the iron XIV line
neutron emission
polar coronal holes
meteor emission
changes in the line-blanketing

16 Complete the text:

Match up the item letter with each of the possibilities below:
synchrotron X-rays - A
power law - B
inverse Compton - C
thermal Bremsstrahlung - D
black body - E
cyclotron - F
Supergiant Fast X-ray Transients

Galactic diffuse emission

.
Crab nebula

.
continuum

.
accretion disk

.
strongly magnetized neutron stars

.

17 Which of the following is not a characteristic of X-rays associated with neutron stars?

X-ray jets
X-ray binary
emission peaks indicative of neutron decay
X-ray burster
a low-mass X-ray binary

18 Complete the text:

Match up the item letter with each of the possibilities below:
Meteors - A
Cosmic rays - B
Neutrons - C
Protons - D
Electrons - E
Positrons - F
Gamma rays - G
Superluminals - H
X-ray jets

the index of refraction is often greater than 1 just below a resonance frequency

.
iron, nickel, cobalt, and traces of iridium

.
Sagittarius X-1

.
escape from a typical hard low-mass X-ray binary

.
collisions with argon atoms

.
X-rays are emitted as they slow down

.
Henry Moseley using X-ray spectra

.


Hypotheses[edit | edit source]

  1. More technical questions concerning aspects of spectroscopy may be good.

See also[edit | edit source]

External links[edit | edit source]

{{Radiation astronomy resources}}