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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. A galaxy shaped like a flattened ball - containing only old stars
elliptical galaxy
the big crunch
phases of the moon
Tycho Brahe
2. The motion of a spinning body (as a top) in which it wobbles so that the axis of rotation sweeps out a cone
precession
elliptical galaxy
Tycho Brahe
absolute magnitude
3. The spinning of Earth on its axis
rotation
geocentric
Jovian planet
solstace
4. A spectrum of light in which there are no gaps - so that each region blends directly into the next
geocentric
continuous spectrum
quasar
pulsar
5. The decrease in wavelength of light due to an object moving away from the oberver
retrograde motion
blue shift
terrestrial planet
accretion
6. A telescope that uses a curved mirror to collect and focus light
the big crunch
Sir Isaac Newton
Johannes Kepler
reflecting telescope
7. Galaxy with no particular shape - contains new & old stars
spiral galaxy
irregular galaxy
black hole
binary star
8. 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.
meteorite
Galileo Galilei
asteroid
retrograde motion
9. An extremely bright star of very large diameter and low density
nova
solar eclipse
accretion
supergiant
10. Massive clouds of dust and gases where stars are born
solar eclipse
absolute magnitude
nebulae
evolution
11. Influenced by Copernicus; Built observatory and collected data on the locations of stars and planets for over 20 years
Tycho Brahe
accretion
quasar
Johannes Kepler
12. Any natural satellite of a planet
moon
black hole
terrestrial planet
spiral galaxy
13. The theory that the universe originated 20 billion years ago from the cataclysmic explosion of a small mass of matter at extremely high density and temperature
big bang theory
apparent magnitude
electromagnetic spectrum
local group
14. A group of stars that form a pattern in the sky
geocentric
Oort Cloud
constellation
milky way galaxy
15. A variable star that brightens and dims regularly - or pulses - and whose distance can be determined from its period of pulsation
irregular galaxy
meteor
red dwarf
cepheid variable
16. Change in the apparent frequency of a wave as observer and source move toward or away from each other
Jovian planet
doppler effect
white dwarf
phases of the moon
17. English mathematician and physicist - discovered the law of universal gravitation
Sir Isaac Newton
element
the big crunch
planet
18. A model of the universe based on the assumption that the sun - moon - and planets all orbit Earth
solar eclipse
universal gravitation
retrograde motion
geocentric
19. Explained movement of planets with retrograde motion
apogee
Claudius Ptolemy
nebula
nebula
20. The theory that states that gravity will over come the expansion of the universe and bring everything together in an implosion
the big crunch
constellation
doppler effect
evolution
21. The elliptical motion of a body as it orbits another body in space
nebula
evolution
elliptical galaxy
perigee
22. The study of the universe
heliocentric
evolution
apogee
astronomy
23. A system of galaxies containing from several to thousands of member galaxies
evolution
galaxy cluster
emission spectrum
nebula
24. The place in the orbit of a planet where the planet is farthest from the sun
Sir Isaac Newton
aphelion
electromagnetic spectrum
phases of the moon
25. Spectrum of electromagnetic radiation emitted by a self-luminous source
Galileo Galilei
black hole
apogee
emission spectrum
26. 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
radio telescope
equinox
apparent magnitude
27. A measure of the amount of light that a star actually emits
emission spectrum
Oort Cloud
absolute magnitude
black hole
28. Varying amounts of the lighted moon as seen from earth
galaxy cluster
moon
phases of the moon
Johannes Kepler
29. Radiation left over from the beginning of the universe
cepheid variable
background radiation
geocentric
absorption spectrum
30. The study of the spectra of stars by analyzing the spectral properties of the light they give off
phases of the moon
spectroscopy
milky way galaxy
retrograde motion
31. The spectrum of electromagnetic radiation that has passed through a medium that absorbed radiation of certain wavelengths
apogee
Jovian planet
big bang theory
absorption spectrum
32. A galaxy shaped like a flattened ball - containing only old stars
elliptical galaxy
ellipse
Jovian planet
local group
33. A model of the solar system in which Earth and the other planets revolve around the sun
heliocentric
nebula
spiral galaxy
lunar eclipse
34. The farther away a galaxy is - the faster it is moving away
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35. An immense cloud of gas (mainly hydrogen) and dust in interstellar space
nebula
rotation
wavelength
Galileo Galilei
36. Point in orbit that is closest to the sun - planet moves faster
red shift
geocentric
perhelion
cepheid variable
37. The apparent westward motion of the planets with respect to the stars
elliptical galaxy
radio telescope
phases of the moon
retrograde motion
38. Massive clouds of dust and gases where stars are born
supergiant
wavelength
meteorite
nebulae
39. A large cloud of dust and gas that can break apart into smaller pieces and form stars
nebula
main-sequence star
doppler effect
wavelength
40. Any of numerous small celestial bodies composed of rock and metal that move around the sun (mainly between the orbits of Mars and Jupiter)
coma
asteroid
meteroid
geocentric
41. Chunk of rock or dust in space
Jovian planet
comet
meteroid
white dwarf
42. Any of numerous small celestial bodies composed of rock and metal that move around the sun (mainly between the orbits of Mars and Jupiter)
main-sequence star
Tycho Brahe
pulsar
asteroid
43. Change in the apparent frequency of a wave as observer and source move toward or away from each other
supergiant
Sir Isaac Newton
doppler effect
continuous spectrum
44. Planet with a solid - rocky crust; more dense; Inner planet. Mercury - Venus - Earth - Mars
terrestrial planet
milky way galaxy
meteroid
Nicolaus Copernicus
45. The comet discovered in 1705 that repeats itself every 76 years and last appeared in 1986.
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46. An elongated circle - or oval shape - the shape of the planets orbit
ellipse
pulsar
meteorite
continuous spectrum
47. When the moon passes between earth and the sun - blocking the sunlight from reaching earth
astronomical unit (AU)
Galileo Galilei
light-year
solar eclipse
48. 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
Hubble Space Telescope
solstace
spectroscopy
red shift
49. Polish astronomer who produced a workable model of the solar system with the sun in the center (1473-1543)
nova
refracting telescope
Nicolaus Copernicus
heliocentric
50. A star that ejects some of its material in the form of a cloud and become more luminous in the process
doppler effect
main-sequence star
nova
emission spectrum