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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)
nebulae
element
Nicolaus Copernicus
Galileo Galilei
2. Change in the apparent frequency of a wave as observer and source move toward or away from each other
milky way galaxy
astronomical unit (AU)
doppler effect
evolution
3. Optical telescope that has a large convex lens that produces an image that is viewed through the eyepiece
light-year
refracting telescope
spectroscopy
moon
4. Optical telescope that has a large convex lens that produces an image that is viewed through the eyepiece
refracting telescope
Johannes Kepler
universal gravitation
Halley's Comet
5. The decrease in wavelength of light due to an object moving away from the oberver
wavelength
supergiant
ellipse
blue shift
6. An elongated circle - or oval shape - the shape of the planets orbit
planetesimal
ellipse
meteorite
parallax
7. The spectrum of electromagnetic radiation that has passed through a medium that absorbed radiation of certain wavelengths
Halley's Comet
Hubble Space Telescope
absorption spectrum
pulsar
8. English mathematician and physicist - discovered the law of universal gravitation
astronomical unit (AU)
red shift
terrestrial planet
Sir Isaac Newton
9. A model of the universe based on the assumption that the sun - moon - and planets all orbit Earth
apparent magnitude
red shift
geocentric
aphelion
10. 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
nebula
nebulae
precession
11. The distance between crests of waves - such as those of the electromagnetic spectrum
nebulae
Claudius Ptolemy
rotation
wavelength
12. The theory that states that gravity will over come the expansion of the universe and bring everything together in an implosion
Nicolaus Copernicus
absorption spectrum
continuous spectrum
the big crunch
13. The apparent change in position of an object when seen from different places
photon
parallax
accretion
Hubble Space Telescope
14. A galaxy with a bulge in the middle and arms that spiral outward in a pinwheel pattern
solar eclipse
Galileo Galilei
aphelion
spiral galaxy
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.
earth's tilt
Galileo Galilei
Claudius Ptolemy
supernova
16. One of the small asteroid-like bodies that formed the building blocks of the planets
astronomy
electromagnetic spectrum
planetesimal
Tycho Brahe
17. Any of the small solid extraterrestrial bodies that hits the earth's atmosphere
Oort Cloud
heliocentric
galaxy cluster
meteor
18. Any natural satellite of a planet
solstace
ellipse
earth's tilt
moon
19. A graph relating the temperature and brightness of stars
Nicolaus Copernicus
white dwarf
Hertzsprung-Russel Diagram
galaxy
20. Point in orbit that is closest to the sun - planet moves faster
red giant
absorption spectrum
reflecting telescope
perhelion
21. Remnant of a star that is so dense that nothing - not even light - can escape its gravity field
milky way galaxy
emission spectrum
wavelength
black hole
22. A star that falls into the main sequence category on the H-are diagram
equinox
main-sequence star
radio telescope
radio telescope
23. A group of stars that form a pattern in the sky
absolute magnitude
Kuiper Belt
constellation
aphelion
24. A faint star of enormous density
white dwarf
absolute magnitude
protostar
black hole
25. An extremely bright star of very large diameter and low density
Nicolaus Copernicus
supergiant
terrestrial planet
reflecting telescope
26. The comet discovered in 1705 that repeats itself every 76 years and last appeared in 1986.
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27. Any substance that cannot be broken down into simpler substances
element
absolute magnitude
moon
galaxy cluster
28. The study of the universe
electromagnetic spectrum
light-year
astronomy
reflecting telescope
29. The name of our galaxy - a spiral galaxy that contains about 400 billion stars
photon
milky way galaxy
electromagnetic spectrum
earth's tilt
30. The brilliant explosion of a dying supergiant star
refracting telescope
cepheid variable
refracting telescope
supernova
31. All of the frequencies or wavelengths of electromagnetic radiation
electromagnetic spectrum
wavelength
Hertzsprung-Russel Diagram
moon
32. A galaxy with a bulge in the middle and arms that spiral outward in a pinwheel pattern
coma
element
spiral galaxy
light-year
33. The formation of a celestial object by the effect of gravity pulling together surrounding objects and gases
chromatic abberation
accretion
astronomical unit (AU)
meteroid
34. A contracting cloud of gas and dust with enough mass to form a star
protostar
spiral galaxy
earth's tilt
Halley's Comet
35. The comet discovered in 1705 that repeats itself every 76 years and last appeared in 1986.
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36. When the moon passes between earth and the sun - blocking the sunlight from reaching earth
retrograde motion
solar eclipse
evolution
spectroscopy
37. 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
main-sequence star
perigee
asteroid
38. When the northern or southern most point on earth receives the most sun because the earth is tilted toward the sun
Sir Isaac Newton
white dwarf
doppler effect
solstace
39. A measure of the amount of light that a star actually emits
neutron star
pulsar
Sir Isaac Newton
absolute magnitude
40. Brahe's assistant - German astronomer who first discovered the three laws of planetary motion (1571-1630)
Johannes Kepler
Hubble Space Telescope
equinox
ellipse
41. A star that ejects some of its material in the form of a cloud and become more luminous in the process
earth's tilt
red dwarf
nova
equinox
42. The blocking of sunlight to the moon that occurs when Earth is directly between the sun and the moon
the big crunch
lunar eclipse
black hole
apogee
43. Point in orbit that is closest to the sun - planet moves faster
chromatic abberation
perhelion
perigee
milky way galaxy
44. All of the frequencies or wavelengths of electromagnetic radiation
continuous spectrum
electromagnetic spectrum
blue shift
Tycho Brahe
45. The brightness of a star when viewed from Earth
apogee
apparent magnitude
Galileo Galilei
astronomical unit (AU)
46. The two days of the year on which neither hemisphere is tilted toward or away from the sun
elliptical galaxy
supernova
equinox
pulsar
47. Varying amounts of the lighted moon as seen from earth
phases of the moon
Johannes Kepler
meteroid
apogee
48. Stony or metallic object that is the remains of a meteoroid that has reached the earth's surface
red giant
Hubble Space Telescope
meteorite
spiral galaxy
49. Radiation left over from the beginning of the universe
neutron star
background radiation
meteorite
solstace
50. 23.5° - the reason we have seasons
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