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Test your basic knowledge |
Astronomy Basics
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Subject
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science
Instructions:
Answer 50 questions in 15 minutes.
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Match each statement with the correct term.
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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. Large group of stars - dust - and gas held together by gravity; can be elliptical - spiral - or irregular
meteor
galaxy
Nicolaus Copernicus
planet
2. A region of the solar system that is just beyond the orbit of neptune and that contains small bodies made mostly of ice
Kuiper Belt
equinox
nebula
photon
3. The average distance between the Earth and the sun - or approximately 150000000 km
light-year
ellipse
Galileo Galilei
astronomical unit (AU)
4. Stony or metallic object that is the remains of a meteoroid that has reached the earth's surface
nebula
meteorite
elliptical galaxy
emission spectrum
5. Change in the apparent frequency of a wave as observer and source move toward or away from each other
ellipse
doppler effect
evolution
electromagnetic spectrum
6. A rapidly spinning neutron star that produces radio waves
pulsar
solar eclipse
light-year
phases of the moon
7. A system of two stars that revolve around each other under their mutual gravitation
Hertzsprung-Russel Diagram
Claudius Ptolemy
binary star
equinox
8. The brightness of a star when viewed from Earth
apparent magnitude
light-year
Claudius Ptolemy
absorption spectrum
9. Point in orbit that is closest to the sun - planet moves faster
red shift
irregular galaxy
perhelion
absorption spectrum
10. The motion of a spinning body (as a top) in which it wobbles so that the axis of rotation sweeps out a cone
Halley's Comet
photon
Nicolaus Copernicus
precession
11. The formation of a celestial object by the effect of gravity pulling together surrounding objects and gases
phases of the moon
accretion
supernova
heliocentric
12. A telescope that uses a curved mirror to collect and focus light
perhelion
rotation
planet
reflecting telescope
13. Remnant of a star that is so dense that nothing - not even light - can escape its gravity field
earth's tilt
black hole
supergiant
Kuiper Belt
14. Galaxy with no particular shape - contains new & old stars
binary star
retrograde motion
irregular galaxy
solar eclipse
15. An immense cloud of gas (mainly hydrogen) and dust in interstellar space
Claudius Ptolemy
perhelion
accretion
nebula
16. The place in the orbit of a planet where the planet is farthest from the sun
Galileo Galilei
aphelion
Oort Cloud
local group
17. Varying amounts of the lighted moon as seen from earth
phases of the moon
Tycho Brahe
spiral galaxy
milky way galaxy
18. 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
red dwarf
milky way galaxy
blue shift
universal gravitation
19. A particle of electromagnetic radiation having zero mass and carrying a quantum of energy
emission spectrum
photon
neutron star
precession
20. Spectrum of electromagnetic radiation emitted by a self-luminous source
solar eclipse
comet
neutron star
emission spectrum
21. Chunk of rock or dust in space
red shift
comet
meteroid
main-sequence star
22. Brahe's assistant - German astronomer who first discovered the three laws of planetary motion (1571-1630)
big bang theory
blue shift
quasar
Johannes Kepler
23. Any substance that cannot be broken down into simpler substances
Johannes Kepler
spectroscopy
equinox
element
24. A faint star of enormous density
reflecting telescope
white dwarf
pulsar
red giant
25. A very small star with low temperature - reddish in color
wavelength
emission spectrum
quasar
red dwarf
26. When the moon passes between earth and the sun - blocking the sunlight from reaching earth
phases of the moon
retrograde motion
solar eclipse
constellation
27. A group of stars that form a pattern in the sky
constellation
the big crunch
red shift
Johannes Kepler
28. 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
white dwarf
Jovian planet
white dwarf
29. The rainbow effect when light is dispersed through lens
elliptical galaxy
black hole
chromatic abberation
parallax
30. The brightness of a star when viewed from Earth
apparent magnitude
Hertzsprung-Russel Diagram
Hubble Space Telescope
radio telescope
31. The theory that states that gravity will over come the expansion of the universe and bring everything together in an implosion
parallax
electromagnetic spectrum
coma
the big crunch
32. An extremely bright star of very large diameter and low density
light-year
supergiant
element
comet
33. A variable star that brightens and dims regularly - or pulses - and whose distance can be determined from its period of pulsation
galaxy
coma
cepheid variable
Tycho Brahe
34. Point of moon's orbit when it is nearest the earth
earth's tilt
perigee
moon
meteorite
35. The study of the universe
astronomy
radio telescope
Kuiper Belt
aphelion
36. A group of about 30 galaxies that includes the Milky Way
big bang theory
nebula
local group
absolute magnitude
37. Chunk of rock or dust in space
aphelion
perhelion
comet
meteroid
38. The two days of the year on which neither hemisphere is tilted toward or away from the sun
nebula
absolute magnitude
equinox
Claudius Ptolemy
39. A galaxy with a bulge in the middle and arms that spiral outward in a pinwheel pattern
Halley's Comet
background radiation
spiral galaxy
electromagnetic spectrum
40. Planets with low densities and are huge gas giants. Jupiter - Saturn - Uranus - Neptune
perhelion
Jovian planet
white dwarf
continuous spectrum
41. Any of numerous small celestial bodies composed of rock and metal that move around the sun (mainly between the orbits of Mars and Jupiter)
chromatic abberation
binary star
asteroid
Tycho Brahe
42. The place in the orbit of a planet where the planet is farthest from the sun
Johannes Kepler
phases of the moon
perigee
aphelion
43. The apparent change in position of an object when seen from different places
Johannes Kepler
galaxy
parallax
meteroid
44. The apparent change in position of an object when seen from different places
refracting telescope
solstace
parallax
galaxy
45. Explained movement of planets with retrograde motion
meteor
nebula
Claudius Ptolemy
retrograde motion
46. Influenced by Copernicus; Built observatory and collected data on the locations of stars and planets for over 20 years
comet
apparent magnitude
absorption spectrum
Tycho Brahe
47. The decrease in wavelength of light due to an object moving away from the oberver
background radiation
Kuiper Belt
blue shift
Nicolaus Copernicus
48. The motion of a spinning body (as a top) in which it wobbles so that the axis of rotation sweeps out a cone
white dwarf
precession
element
doppler effect
49. Massive clouds of dust and gases where stars are born
cepheid variable
nebulae
supergiant
lunar eclipse
50. Massive clouds of dust and gases where stars are born
phases of the moon
coma
nebulae
elliptical galaxy
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