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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. The spinning of Earth on its axis
rotation
binary star
solar eclipse
meteor
2. 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
geocentric
heliocentric
reflecting telescope
universal gravitation
3. 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.
perigee
Galileo Galilei
radio telescope
solstace
4. The study of the spectra of stars by analyzing the spectral properties of the light they give off
apparent magnitude
spectroscopy
Claudius Ptolemy
Johannes Kepler
5. A star that falls into the main sequence category on the H-are diagram
protostar
galaxy cluster
main-sequence star
wavelength
6. A model of the solar system in which Earth and the other planets revolve around the sun
local group
Jovian planet
protostar
heliocentric
7. The decrease in wavelength of light due to an object moving away from the oberver
quasar
blue shift
solar eclipse
continuous spectrum
8. A region of the solar system that is just beyond the orbit of neptune and that contains small bodies made mostly of ice
nova
planetesimal
Kuiper Belt
photon
9. The most distant point in the orbit of the moon
astronomy
meteorite
Hubble's law
apogee
10. Massive clouds of dust and gases where stars are born
photon
comet
nebulae
apogee
11. Influenced by Copernicus; Built observatory and collected data on the locations of stars and planets for over 20 years
elliptical galaxy
Tycho Brahe
chromatic abberation
radio telescope
12. A system of galaxies containing from several to thousands of member galaxies
astronomy
galaxy cluster
binary star
red shift
13. The name of our galaxy - a spiral galaxy that contains about 400 billion stars
photon
light-year
milky way galaxy
rotation
14. A system of two stars that revolve around each other under their mutual gravitation
reflecting telescope
binary star
supergiant
Oort Cloud
15. 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
emission spectrum
reflecting telescope
parallax
16. A large cloud of dust and gas that can break apart into smaller pieces and form stars
big bang theory
moon
nebula
perhelion
17. A variable star that brightens and dims regularly - or pulses - and whose distance can be determined from its period of pulsation
supergiant
reflecting telescope
cepheid variable
Kuiper Belt
18. Any of the small solid extraterrestrial bodies that hits the earth's atmosphere
doppler effect
Claudius Ptolemy
meteor
precession
19. The luminous cloud of particles surrounding the frozen nucleus of a comet
coma
earth's tilt
Galileo Galilei
rotation
20. Change in the apparent frequency of a wave as observer and source move toward or away from each other
Nicolaus Copernicus
doppler effect
neutron star
nebula
21. One of the small asteroid-like bodies that formed the building blocks of the planets
universal gravitation
meteorite
big bang theory
planetesimal
22. 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
red giant
electromagnetic spectrum
big bang theory
heliocentric
23. The spinning of Earth on its axis
meteroid
rotation
light-year
astronomical unit (AU)
24. When the moon passes between earth and the sun - blocking the sunlight from reaching earth
the big crunch
solar eclipse
solstace
main-sequence star
25. Optical telescope that has a large convex lens that produces an image that is viewed through the eyepiece
nebulae
Halley's Comet
milky way galaxy
refracting telescope
26. Polish astronomer who produced a workable model of the solar system with the sun in the center (1473-1543)
spiral galaxy
binary star
neutron star
Nicolaus Copernicus
27. 23.5° - the reason we have seasons
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28. Any of numerous small celestial bodies composed of rock and metal that move around the sun (mainly between the orbits of Mars and Jupiter)
earth's tilt
apparent magnitude
solar eclipse
asteroid
29. Planet with a solid - rocky crust; more dense; Inner planet. Mercury - Venus - Earth - Mars
apogee
Hertzsprung-Russel Diagram
terrestrial planet
Sir Isaac Newton
30. Large group of stars - dust - and gas held together by gravity; can be elliptical - spiral - or irregular
galaxy
spectroscopy
protostar
astronomical unit (AU)
31. Radiation left over from the beginning of the universe
moon
white dwarf
background radiation
Oort Cloud
32. Brahe's assistant - German astronomer who first discovered the three laws of planetary motion (1571-1630)
Johannes Kepler
meteorite
protostar
main-sequence star
33. An immense cloud of gas (mainly hydrogen) and dust in interstellar space
nebula
Nicolaus Copernicus
local group
solstace
34. Varying amounts of the lighted moon as seen from earth
parallax
phases of the moon
Oort Cloud
ellipse
35. The farther away a galaxy is - the faster it is moving away
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36. Astronomical telescope that picks up electromagnetic radiations in the radio-frequency range from extra-terrestrial sources
coma
irregular galaxy
binary star
radio telescope
37. A star that ejects some of its material in the form of a cloud and become more luminous in the process
photon
Sir Isaac Newton
nova
moon
38. The study of the spectra of stars by analyzing the spectral properties of the light they give off
red giant
spectroscopy
red giant
Oort Cloud
39. A faint star of enormous density
white dwarf
Galileo Galilei
absorption spectrum
apogee
40. The average distance between the Earth and the sun - or approximately 150000000 km
Claudius Ptolemy
Hertzsprung-Russel Diagram
pulsar
astronomical unit (AU)
41. The formation of a celestial object by the effect of gravity pulling together surrounding objects and gases
photon
accretion
refracting telescope
red giant
42. All of the frequencies or wavelengths of electromagnetic radiation
parallax
reflecting telescope
electromagnetic spectrum
doppler effect
43. Any natural satellite of a planet
heliocentric
moon
radio telescope
white dwarf
44. The comet discovered in 1705 that repeats itself every 76 years and last appeared in 1986.
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45. A contracting cloud of gas and dust with enough mass to form a star
moon
protostar
milky way galaxy
supernova
46. A spectrum of light in which there are no gaps - so that each region blends directly into the next
continuous spectrum
earth's tilt
coma
element
47. 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
elliptical galaxy
rotation
Jovian planet
red shift
48. A large cloud of dust and gas that can break apart into smaller pieces and form stars
red shift
nebula
white dwarf
evolution
49. Galaxy with no particular shape - contains new & old stars
absorption spectrum
doppler effect
planetesimal
irregular galaxy
50. 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
universal gravitation
Oort Cloud
wavelength
elliptical galaxy