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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. Polish astronomer who produced a workable model of the solar system with the sun in the center (1473-1543)
nebula
continuous spectrum
background radiation
Nicolaus Copernicus
2. Any of the small solid extraterrestrial bodies that hits the earth's atmosphere
Oort Cloud
red shift
galaxy
meteor
3. When the moon passes between earth and the sun - blocking the sunlight from reaching earth
asteroid
Sir Isaac Newton
ellipse
solar eclipse
4. Change in the apparent frequency of a wave as observer and source move toward or away from each other
retrograde motion
doppler effect
perigee
aphelion
5. The place in the orbit of a planet where the planet is farthest from the sun
precession
aphelion
geocentric
the big crunch
6. The brightness of a star when viewed from Earth
apparent magnitude
Hubble Space Telescope
Johannes Kepler
red giant
7. A large cloud of dust and gas that can break apart into smaller pieces and form stars
terrestrial planet
evolution
protostar
nebula
8. Large group of stars - dust - and gas held together by gravity; can be elliptical - spiral - or irregular
big bang theory
apogee
galaxy
perhelion
9. The brilliant explosion of a dying supergiant star
geocentric
big bang theory
milky way galaxy
supernova
10. The study of the universe
aphelion
astronomy
doppler effect
cepheid variable
11. A measure of the amount of light that a star actually emits
supernova
absolute magnitude
Oort Cloud
light-year
12. A galaxy shaped like a flattened ball - containing only old stars
neutron star
black hole
elliptical galaxy
Hubble's law
13. A telescope that uses a curved mirror to collect and focus light
background radiation
continuous spectrum
red dwarf
reflecting telescope
14. Italian astronomer - mathematician - and physicist. His telescopes proved the sun is the center of the solar system and that the planets/moon move. He was persecuted for supporting Copernicus' ideas.
Galileo Galilei
Halley's Comet
refracting telescope
lunar eclipse
15. Varying amounts of the lighted moon as seen from earth
moon
ellipse
emission spectrum
phases of the moon
16. The study of the universe
emission spectrum
supergiant
astronomy
geocentric
17. Planet with a solid - rocky crust; more dense; Inner planet. Mercury - Venus - Earth - Mars
blue shift
main-sequence star
terrestrial planet
meteroid
18. Point of moon's orbit when it is nearest the earth
electromagnetic spectrum
Hertzsprung-Russel Diagram
refracting telescope
perigee
19. A star that expands and cools once it runs out of hydrogen fuel
aphelion
meteroid
chromatic abberation
red giant
20. The formation of a celestial object by the effect of gravity pulling together surrounding objects and gases
Hubble's law
spiral galaxy
Johannes Kepler
accretion
21. The theory that states that gravity will over come the expansion of the universe and bring everything together in an implosion
meteroid
aphelion
the big crunch
moon
22. A graph relating the temperature and brightness of stars
Hertzsprung-Russel Diagram
phases of the moon
doppler effect
background radiation
23. Spectrum of electromagnetic radiation emitted by a self-luminous source
white dwarf
retrograde motion
emission spectrum
Claudius Ptolemy
24. The increase in wavelength of light due to an object moving away from the observer
red shift
Halley's Comet
planet
parallax
25. The decrease in wavelength of light due to an object moving away from the oberver
comet
rotation
the big crunch
blue shift
26. 23.5° - the reason we have seasons
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27. The small - dense remains of a high-mass star after a supernova
Halley's Comet
neutron star
wavelength
Jovian planet
28. Light distance travels in one year (9.5 trillion km)
spectroscopy
light-year
supergiant
accretion
29. Chunk of rock or dust in space
planetesimal
meteroid
precession
perigee
30. A variable star that brightens and dims regularly - or pulses - and whose distance can be determined from its period of pulsation
Claudius Ptolemy
nebula
cepheid variable
perigee
31. Planet with a solid - rocky crust; more dense; Inner planet. Mercury - Venus - Earth - Mars
heliocentric
terrestrial planet
the big crunch
lunar eclipse
32. A region of the solar system that is just beyond the orbit of neptune and that contains small bodies made mostly of ice
continuous spectrum
Tycho Brahe
asteroid
Kuiper Belt
33. A star that expands and cools once it runs out of hydrogen fuel
red giant
milky way galaxy
Galileo Galilei
blue shift
34. Any substance that cannot be broken down into simpler substances
comet
element
binary star
spiral galaxy
35. A galaxy shaped like a flattened ball - containing only old stars
elliptical galaxy
comet
equinox
chromatic abberation
36. A system of galaxies containing from several to thousands of member galaxies
geocentric
refracting telescope
galaxy cluster
background radiation
37. The name of our galaxy - a spiral galaxy that contains about 400 billion stars
constellation
retrograde motion
reflecting telescope
milky way galaxy
38. The two days of the year on which neither hemisphere is tilted toward or away from the sun
spectroscopy
black hole
Johannes Kepler
equinox
39. A model of the universe based on the assumption that the sun - moon - and planets all orbit Earth
big bang theory
geocentric
local group
local group
40. The comet discovered in 1705 that repeats itself every 76 years and last appeared in 1986.
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41. Influenced by Copernicus; Built observatory and collected data on the locations of stars and planets for over 20 years
chromatic abberation
Tycho Brahe
rotation
spectroscopy
42. 23.5° - the reason we have seasons
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43. A model of the solar system in which Earth and the other planets revolve around the sun
quasar
Johannes Kepler
elliptical galaxy
heliocentric
44. A star that falls into the main sequence category on the H-are diagram
lunar eclipse
nebulae
main-sequence star
Sir Isaac Newton
45. Planets with low densities and are huge gas giants. Jupiter - Saturn - Uranus - Neptune
Jovian planet
main-sequence star
refracting telescope
main-sequence star
46. One of the small asteroid-like bodies that formed the building blocks of the planets
Halley's Comet
aphelion
planetesimal
doppler effect
47. Point of moon's orbit when it is nearest the earth
perigee
doppler effect
evolution
geocentric
48. A spherical region of comets that surrounds the solar system
absorption spectrum
Oort Cloud
electromagnetic spectrum
comet
49. A measure of the amount of light that a star actually emits
red shift
absorption spectrum
absolute magnitude
Hertzsprung-Russel Diagram
50. 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
red shift
elliptical galaxy
galaxy cluster
Jovian planet