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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 blocking of sunlight to the moon that occurs when Earth is directly between the sun and the moon
Tycho Brahe
element
equinox
lunar eclipse
2. English mathematician and physicist - discovered the law of universal gravitation
galaxy
perigee
Sir Isaac Newton
geocentric
3. All of the frequencies or wavelengths of electromagnetic radiation
quasar
Kuiper Belt
astronomy
electromagnetic spectrum
4. A group of about 30 galaxies that includes the Milky Way
local group
Hubble's law
accretion
lunar eclipse
5. 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
Nicolaus Copernicus
astronomy
universal gravitation
red shift
6. A group of stars that form a pattern in the sky
constellation
phases of the moon
reflecting telescope
background radiation
7. Optical telescope that has a large convex lens that produces an image that is viewed through the eyepiece
doppler effect
geocentric
refracting telescope
accretion
8. An immense cloud of gas (mainly hydrogen) and dust in interstellar space
nebula
apparent magnitude
planetesimal
electromagnetic spectrum
9. Point of moon's orbit when it is nearest the earth
Oort Cloud
quasar
perigee
Sir Isaac Newton
10. Polish astronomer who produced a workable model of the solar system with the sun in the center (1473-1543)
chromatic abberation
Sir Isaac Newton
astronomical unit (AU)
Nicolaus Copernicus
11. An extremely bright star of very large diameter and low density
supergiant
retrograde motion
black hole
photon
12. One of the small asteroid-like bodies that formed the building blocks of the planets
main-sequence star
nebula
meteorite
planetesimal
13. 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
Jovian planet
Oort Cloud
apparent magnitude
14. The study of the spectra of stars by analyzing the spectral properties of the light they give off
pulsar
red shift
spectroscopy
milky way galaxy
15. The spectrum of electromagnetic radiation that has passed through a medium that absorbed radiation of certain wavelengths
absorption spectrum
spectroscopy
evolution
cepheid variable
16. Explained movement of planets with retrograde motion
aphelion
irregular galaxy
supernova
Claudius Ptolemy
17. The name of our galaxy - a spiral galaxy that contains about 400 billion stars
doppler effect
element
milky way galaxy
asteroid
18. Brahe's assistant - German astronomer who first discovered the three laws of planetary motion (1571-1630)
planet
Johannes Kepler
perhelion
astronomical unit (AU)
19. A very small star with low temperature - reddish in color
red dwarf
supergiant
red giant
geocentric
20. A large cloud of dust and gas that can break apart into smaller pieces and form stars
phases of the moon
the big crunch
Sir Isaac Newton
nebula
21. 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
meteorite
heliocentric
big bang theory
accretion
22. Any substance that cannot be broken down into simpler substances
element
Galileo Galilei
local group
retrograde motion
23. Astronomical telescope that picks up electromagnetic radiations in the radio-frequency range from extra-terrestrial sources
radio telescope
elliptical galaxy
Hubble Space Telescope
astronomical unit (AU)
24. When the moon passes between earth and the sun - blocking the sunlight from reaching earth
solar eclipse
local group
background radiation
planet
25. A faint star of enormous density
Jovian planet
coma
white dwarf
background radiation
26. A faint star of enormous density
white dwarf
nova
solstace
galaxy
27. Influenced by Copernicus; Built observatory and collected data on the locations of stars and planets for over 20 years
irregular galaxy
pulsar
Tycho Brahe
meteroid
28. The brightness of a star when viewed from Earth
red dwarf
milky way galaxy
apparent magnitude
perigee
29. The small - dense remains of a high-mass star after a supernova
terrestrial planet
accretion
apparent magnitude
neutron star
30. The motion of a spinning body (as a top) in which it wobbles so that the axis of rotation sweeps out a cone
light-year
Hubble Space Telescope
supernova
precession
31. A galaxy shaped like a flattened ball - containing only old stars
photon
elliptical galaxy
moon
irregular galaxy
32. The formation of a celestial object by the effect of gravity pulling together surrounding objects and gases
rotation
terrestrial planet
constellation
accretion
33. The rainbow effect when light is dispersed through lens
light-year
heliocentric
chromatic abberation
astronomical unit (AU)
34. Any of the small solid extraterrestrial bodies that hits the earth's atmosphere
meteor
perigee
blue shift
neutron star
35. The small - dense remains of a high-mass star after a supernova
chromatic abberation
astronomy
neutron star
meteor
36. The distance between crests of waves - such as those of the electromagnetic spectrum
spiral galaxy
white dwarf
wavelength
quasar
37. The elliptical motion of a body as it orbits another body in space
equinox
evolution
main-sequence star
doppler effect
38. The increase in wavelength of light due to an object moving away from the observer
red shift
absolute magnitude
apogee
galaxy cluster
39. The farther away a galaxy is - the faster it is moving away
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40. An elongated circle - or oval shape - the shape of the planets orbit
ellipse
meteorite
continuous spectrum
comet
41. Varying amounts of the lighted moon as seen from earth
universal gravitation
radio telescope
terrestrial planet
phases of the moon
42. The luminous cloud of particles surrounding the frozen nucleus of a comet
Halley's Comet
coma
element
meteroid
43. An extremely bright star of very large diameter and low density
constellation
Sir Isaac Newton
cepheid variable
supergiant
44. Any natural satellite of a planet
Halley's Comet
white dwarf
nebula
moon
45. When the northern or southern most point on earth receives the most sun because the earth is tilted toward the sun
rotation
solstace
Jovian planet
apogee
46. Point in orbit that is closest to the sun - planet moves faster
binary star
perhelion
emission spectrum
radio telescope
47. Radiation left over from the beginning of the universe
Kuiper Belt
background radiation
retrograde motion
evolution
48. The increase in wavelength of light due to an object moving away from the observer
Hertzsprung-Russel Diagram
red shift
Kuiper Belt
Johannes Kepler
49. Varying amounts of the lighted moon as seen from earth
blue shift
galaxy
local group
phases of the moon
50. A telescope that uses a curved mirror to collect and focus light
reflecting telescope
Kuiper Belt
phases of the moon
lunar eclipse