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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 group of about 30 galaxies that includes the Milky Way
planet
local group
big bang theory
protostar
2. The distance between crests of waves - such as those of the electromagnetic spectrum
meteroid
irregular galaxy
Claudius Ptolemy
wavelength
3. Polish astronomer who produced a workable model of the solar system with the sun in the center (1473-1543)
Hubble Space Telescope
absolute magnitude
chromatic abberation
Nicolaus Copernicus
4. English mathematician and physicist - discovered the law of universal gravitation
red dwarf
evolution
nebula
Sir Isaac Newton
5. A galaxy shaped like a flattened ball - containing only old stars
meteroid
perhelion
main-sequence star
elliptical galaxy
6. Polish astronomer who produced a workable model of the solar system with the sun in the center (1473-1543)
Nicolaus Copernicus
meteroid
accretion
blue shift
7. When the moon passes between earth and the sun - blocking the sunlight from reaching earth
light-year
Jovian planet
solar eclipse
absorption spectrum
8. A spectrum of light in which there are no gaps - so that each region blends directly into the next
white dwarf
Kuiper Belt
Johannes Kepler
continuous spectrum
9. Point in orbit that is closest to the sun - planet moves faster
irregular galaxy
perhelion
main-sequence star
white dwarf
10. The two days of the year on which neither hemisphere is tilted toward or away from the sun
earth's tilt
blue shift
equinox
nova
11. Space object made of dust and rock particles mixed with frozen water - methane - and ammonia that forms a bright coma as it approaches the Sun
equinox
red shift
cepheid variable
comet
12. A spectrum of light in which there are no gaps - so that each region blends directly into the next
continuous spectrum
cepheid variable
astronomical unit (AU)
geocentric
13. An enormously bright - distant galaxy with a giant black hole at its center
Hubble Space Telescope
quasar
neutron star
perhelion
14. A variable star that brightens and dims regularly - or pulses - and whose distance can be determined from its period of pulsation
neutron star
astronomical unit (AU)
Hubble's law
cepheid variable
15. A galaxy with a bulge in the middle and arms that spiral outward in a pinwheel pattern
supernova
astronomical unit (AU)
spiral galaxy
continuous spectrum
16. A faint star of enormous density
white dwarf
galaxy cluster
doppler effect
terrestrial planet
17. Point of moon's orbit when it is nearest the earth
photon
blue shift
perigee
binary star
18. An enormously bright - distant galaxy with a giant black hole at its center
quasar
apparent magnitude
phases of the moon
nebula
19. A model of the solar system in which Earth and the other planets revolve around the sun
red shift
emission spectrum
galaxy cluster
heliocentric
20. The increase in wavelength of light due to an object moving away from the observer
blue shift
red shift
Kuiper Belt
Hertzsprung-Russel Diagram
21. A measure of the amount of light that a star actually emits
element
nebula
absolute magnitude
red shift
22. A region of the solar system that is just beyond the orbit of neptune and that contains small bodies made mostly of ice
moon
asteroid
cepheid variable
Kuiper Belt
23. Change in the apparent frequency of a wave as observer and source move toward or away from each other
Johannes Kepler
pulsar
doppler effect
planetesimal
24. An elongated circle - or oval shape - the shape of the planets orbit
astronomical unit (AU)
radio telescope
supergiant
ellipse
25. A particle of electromagnetic radiation having zero mass and carrying a quantum of energy
Kuiper Belt
photon
blue shift
white dwarf
26. Any of the small solid extraterrestrial bodies that hits the earth's atmosphere
rotation
big bang theory
meteor
lunar eclipse
27. The study of the universe
astronomy
pulsar
supergiant
absorption spectrum
28. A faint star of enormous density
red giant
white dwarf
red shift
the big crunch
29. 23.5° - the reason we have seasons
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30. The blocking of sunlight to the moon that occurs when Earth is directly between the sun and the moon
lunar eclipse
spectroscopy
planetesimal
Nicolaus Copernicus
31. Optical telescope that has a large convex lens that produces an image that is viewed through the eyepiece
pulsar
quasar
the big crunch
refracting telescope
32. 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
terrestrial planet
wavelength
radio telescope
universal gravitation
33. A galaxy with a bulge in the middle and arms that spiral outward in a pinwheel pattern
lunar eclipse
light-year
comet
spiral galaxy
34. The average distance between the Earth and the sun - or approximately 150000000 km
chromatic abberation
astronomical unit (AU)
the big crunch
parallax
35. The brightness of a star when viewed from Earth
nebula
ellipse
terrestrial planet
apparent magnitude
36. A telescope that uses a curved mirror to collect and focus light
lunar eclipse
local group
reflecting telescope
chromatic abberation
37. An elongated circle - or oval shape - the shape of the planets orbit
binary star
black hole
white dwarf
ellipse
38. Massive clouds of dust and gases where stars are born
nebulae
astronomical unit (AU)
spiral galaxy
wavelength
39. Planets with low densities and are huge gas giants. Jupiter - Saturn - Uranus - Neptune
local group
red giant
Jovian planet
cepheid variable
40. English mathematician and physicist - discovered the law of universal gravitation
Sir Isaac Newton
galaxy
solstace
apogee
41. A particle of electromagnetic radiation having zero mass and carrying a quantum of energy
photon
universal gravitation
ellipse
milky way galaxy
42. 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
red shift
white dwarf
red giant
43. Optical telescope that has a large convex lens that produces an image that is viewed through the eyepiece
irregular galaxy
the big crunch
refracting telescope
red dwarf
44. A large cloud of dust and gas that can break apart into smaller pieces and form stars
nebula
galaxy cluster
pulsar
astronomy
45. A graph relating the temperature and brightness of stars
cepheid variable
black hole
Hertzsprung-Russel Diagram
background radiation
46. A spherical region of comets that surrounds the solar system
Oort Cloud
solar eclipse
meteorite
emission spectrum
47. The brightness of a star when viewed from Earth
geocentric
absolute magnitude
apparent magnitude
ellipse
48. When the northern or southern most point on earth receives the most sun because the earth is tilted toward the sun
meteorite
refracting telescope
absorption spectrum
solstace
49. A group of stars that form a pattern in the sky
Halley's Comet
comet
constellation
perigee
50. A contracting cloud of gas and dust with enough mass to form a star
protostar
asteroid
neutron star
equinox