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Test your basic knowledge |
Astronomy Basics
Start Test
Study First
Subject
:
science
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Spectrum of electromagnetic radiation emitted by a self-luminous source
Oort Cloud
equinox
Sir Isaac Newton
emission spectrum
2. A rapidly spinning neutron star that produces radio waves
meteorite
pulsar
accretion
universal gravitation
3. A model of the solar system in which Earth and the other planets revolve around the sun
continuous spectrum
heliocentric
nebulae
blue shift
4. Planet with a solid - rocky crust; more dense; Inner planet. Mercury - Venus - Earth - Mars
Oort Cloud
chromatic abberation
terrestrial planet
solar eclipse
5. The comet discovered in 1705 that repeats itself every 76 years and last appeared in 1986.
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6. A faint star of enormous density
moon
white dwarf
perhelion
emission spectrum
7. The small - dense remains of a high-mass star after a supernova
astronomical unit (AU)
protostar
elliptical galaxy
neutron star
8. The distance between crests of waves - such as those of the electromagnetic spectrum
nebula
retrograde motion
wavelength
solar eclipse
9. A system of two stars that revolve around each other under their mutual gravitation
meteroid
binary star
apparent magnitude
apparent magnitude
10. The brightness of a star when viewed from Earth
perigee
absolute magnitude
apparent magnitude
red shift
11. A star that expands and cools once it runs out of hydrogen fuel
meteorite
blue shift
red giant
perhelion
12. Polish astronomer who produced a workable model of the solar system with the sun in the center (1473-1543)
Hertzsprung-Russel Diagram
Nicolaus Copernicus
white dwarf
heliocentric
13. The spectrum of electromagnetic radiation that has passed through a medium that absorbed radiation of certain wavelengths
meteor
precession
pulsar
absorption spectrum
14. Large group of stars - dust - and gas held together by gravity; can be elliptical - spiral - or irregular
galaxy
red giant
red dwarf
big bang theory
15. A star that ejects some of its material in the form of a cloud and become more luminous in the process
solar eclipse
planetesimal
nova
blue shift
16. The brightness of a star when viewed from Earth
red giant
apparent magnitude
planet
earth's tilt
17. When the northern or southern most point on earth receives the most sun because the earth is tilted toward the sun
electromagnetic spectrum
nebula
solstace
cepheid variable
18. Radiation left over from the beginning of the universe
big bang theory
supernova
background radiation
evolution
19. The distance between crests of waves - such as those of the electromagnetic spectrum
refracting telescope
precession
wavelength
equinox
20. The apparent westward motion of the planets with respect to the stars
continuous spectrum
solstace
moon
retrograde motion
21. The luminous cloud of particles surrounding the frozen nucleus of a comet
coma
perhelion
Hubble Space Telescope
radio telescope
22. Every object in the universe was attracted to every other object w/ a force that is directly proportional to the masses and proportional to distance between them
planet
nova
universal gravitation
red shift
23. A very small star with low temperature - reddish in color
retrograde motion
red dwarf
red giant
meteroid
24. A variable star that brightens and dims regularly - or pulses - and whose distance can be determined from its period of pulsation
earth's tilt
planetesimal
cepheid variable
quasar
25. The study of the spectra of stars by analyzing the spectral properties of the light they give off
constellation
irregular galaxy
spectroscopy
continuous spectrum
26. Any substance that cannot be broken down into simpler substances
neutron star
element
binary star
perhelion
27. The elliptical motion of a body as it orbits another body in space
Claudius Ptolemy
evolution
radio telescope
nova
28. The blocking of sunlight to the moon that occurs when Earth is directly between the sun and the moon
lunar eclipse
Tycho Brahe
binary star
radio telescope
29. A graph relating the temperature and brightness of stars
continuous spectrum
Nicolaus Copernicus
nebulae
Hertzsprung-Russel Diagram
30. Brahe's assistant - German astronomer who first discovered the three laws of planetary motion (1571-1630)
background radiation
evolution
Johannes Kepler
solar eclipse
31. All of the frequencies or wavelengths of electromagnetic radiation
background radiation
white dwarf
the big crunch
electromagnetic spectrum
32. The increase in wavelength of light due to an object moving away from the observer
parallax
red shift
Jovian planet
Claudius Ptolemy
33. An extremely bright star of very large diameter and low density
Johannes Kepler
spectroscopy
blue shift
supergiant
34. A shift toward the red end of the spectrum in the observed spectral lines of stars or galaxies showing objects are moving away and that the universe is expanding
cepheid variable
continuous spectrum
photon
red shift
35. The farther away a galaxy is - the faster it is moving away
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36. Spectrum of electromagnetic radiation emitted by a self-luminous source
quasar
nebulae
Claudius Ptolemy
emission spectrum
37. The rainbow effect when light is dispersed through lens
retrograde motion
constellation
apparent magnitude
chromatic abberation
38. A star that ejects some of its material in the form of a cloud and become more luminous in the process
refracting telescope
Tycho Brahe
element
nova
39. The theory that states that gravity will over come the expansion of the universe and bring everything together in an implosion
local group
blue shift
the big crunch
Oort Cloud
40. Any of the small solid extraterrestrial bodies that hits the earth's atmosphere
astronomical unit (AU)
absorption spectrum
Halley's Comet
meteor
41. The motion of a spinning body (as a top) in which it wobbles so that the axis of rotation sweeps out a cone
solar eclipse
spectroscopy
moon
precession
42. When the moon passes between earth and the sun - blocking the sunlight from reaching earth
Oort Cloud
lunar eclipse
reflecting telescope
solar eclipse
43. Change in the apparent frequency of a wave as observer and source move toward or away from each other
radio telescope
cepheid variable
doppler effect
comet
44. A galaxy with a bulge in the middle and arms that spiral outward in a pinwheel pattern
spiral galaxy
ellipse
main-sequence star
accretion
45. A faint star of enormous density
absorption spectrum
reflecting telescope
heliocentric
white dwarf
46. A star that expands and cools once it runs out of hydrogen fuel
neutron star
spiral galaxy
red giant
accretion
47. A large body in space that orbits a star and does not produce light of its own
the big crunch
planet
milky way galaxy
white dwarf
48. The blocking of sunlight to the moon that occurs when Earth is directly between the sun and the moon
Jovian planet
lunar eclipse
nebulae
refracting telescope
49. The comet discovered in 1705 that repeats itself every 76 years and last appeared in 1986.
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50. Brahe's assistant - German astronomer who first discovered the three laws of planetary motion (1571-1630)
red giant
Johannes Kepler
equinox
white dwarf