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Test your basic knowledge |
Astronomy Basics
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Study First
Subject
:
science
Instructions:
Answer 50 questions in 15 minutes.
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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 name of our galaxy - a spiral galaxy that contains about 400 billion stars
Sir Isaac Newton
nebula
milky way galaxy
Hertzsprung-Russel Diagram
2. 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
nova
precession
comet
nebulae
3. Any substance that cannot be broken down into simpler substances
perigee
blue shift
element
white dwarf
4. A galaxy shaped like a flattened ball - containing only old stars
elliptical galaxy
supergiant
galaxy cluster
Jovian planet
5. The decrease in wavelength of light due to an object moving away from the oberver
blue shift
heliocentric
astronomical unit (AU)
spiral galaxy
6. 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
supergiant
milky way galaxy
supergiant
7. Spectrum of electromagnetic radiation emitted by a self-luminous source
electromagnetic spectrum
Oort Cloud
Hertzsprung-Russel Diagram
emission spectrum
8. The rainbow effect when light is dispersed through lens
chromatic abberation
galaxy
Jovian planet
Oort Cloud
9. The apparent westward motion of the planets with respect to the stars
Jovian planet
retrograde motion
Oort Cloud
Hubble's law
10. A group of about 30 galaxies that includes the Milky Way
chromatic abberation
white dwarf
retrograde motion
local group
11. The two days of the year on which neither hemisphere is tilted toward or away from the sun
nova
equinox
emission spectrum
Halley's Comet
12. Polish astronomer who produced a workable model of the solar system with the sun in the center (1473-1543)
absorption spectrum
big bang theory
constellation
Nicolaus Copernicus
13. A group of stars that form a pattern in the sky
constellation
equinox
absorption spectrum
white dwarf
14. The spinning of Earth on its axis
meteroid
Kuiper Belt
galaxy
rotation
15. The luminous cloud of particles surrounding the frozen nucleus of a comet
red shift
irregular galaxy
coma
constellation
16. Light distance travels in one year (9.5 trillion km)
radio telescope
light-year
Tycho Brahe
milky way galaxy
17. The apparent change in position of an object when seen from different places
terrestrial planet
parallax
light-year
Sir Isaac Newton
18. A measure of the amount of light that a star actually emits
nebulae
doppler effect
meteroid
absolute magnitude
19. A faint star of enormous density
white dwarf
solar eclipse
supergiant
supergiant
20. 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
red shift
geocentric
Halley's Comet
perigee
21. A region of the solar system that is just beyond the orbit of neptune and that contains small bodies made mostly of ice
chromatic abberation
big bang theory
earth's tilt
Kuiper Belt
22. An enormously bright - distant galaxy with a giant black hole at its center
planet
comet
red dwarf
quasar
23. Planet with a solid - rocky crust; more dense; Inner planet. Mercury - Venus - Earth - Mars
terrestrial planet
apparent magnitude
black hole
irregular galaxy
24. A system of two stars that revolve around each other under their mutual gravitation
precession
binary star
irregular galaxy
geocentric
25. Massive clouds of dust and gases where stars are born
radio telescope
nebulae
precession
doppler effect
26. A very small star with low temperature - reddish in color
red dwarf
apparent magnitude
Oort Cloud
geocentric
27. 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
aphelion
local group
retrograde motion
universal gravitation
28. The study of the spectra of stars by analyzing the spectral properties of the light they give off
red giant
chromatic abberation
emission spectrum
spectroscopy
29. A graph relating the temperature and brightness of stars
Hertzsprung-Russel Diagram
nova
Hubble Space Telescope
terrestrial planet
30. A group of about 30 galaxies that includes the Milky Way
perhelion
local group
planetesimal
refracting telescope
31. The increase in wavelength of light due to an object moving away from the observer
red shift
local group
lunar eclipse
comet
32. The brightness of a star when viewed from Earth
supernova
black hole
Johannes Kepler
apparent magnitude
33. Brahe's assistant - German astronomer who first discovered the three laws of planetary motion (1571-1630)
pulsar
red shift
protostar
Johannes Kepler
34. Optical telescope that has a large convex lens that produces an image that is viewed through the eyepiece
reflecting telescope
perhelion
refracting telescope
blue shift
35. Influenced by Copernicus; Built observatory and collected data on the locations of stars and planets for over 20 years
Tycho Brahe
constellation
astronomical unit (AU)
Hertzsprung-Russel Diagram
36. When the moon passes between earth and the sun - blocking the sunlight from reaching earth
blue shift
coma
solar eclipse
Johannes Kepler
37. Varying amounts of the lighted moon as seen from earth
elliptical galaxy
phases of the moon
nebula
blue shift
38. The spinning of Earth on its axis
red shift
lunar eclipse
rotation
supergiant
39. Change in the apparent frequency of a wave as observer and source move toward or away from each other
cepheid variable
doppler effect
red shift
accretion
40. Any natural satellite of a planet
geocentric
moon
continuous spectrum
coma
41. 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
heliocentric
perigee
constellation
universal gravitation
42. The brilliant explosion of a dying supergiant star
perigee
supernova
meteor
radio telescope
43. A variable star that brightens and dims regularly - or pulses - and whose distance can be determined from its period of pulsation
blue shift
heliocentric
elliptical galaxy
cepheid variable
44. The elliptical motion of a body as it orbits another body in space
evolution
precession
Galileo Galilei
wavelength
45. Any of the small solid extraterrestrial bodies that hits the earth's atmosphere
ellipse
Sir Isaac Newton
meteor
Hubble's law
46. The brightness of a star when viewed from Earth
photon
apparent magnitude
emission spectrum
accretion
47. Optical telescope that has a large convex lens that produces an image that is viewed through the eyepiece
refracting telescope
Halley's Comet
cepheid variable
perhelion
48. A model of the solar system in which Earth and the other planets revolve around the sun
perhelion
Hubble Space Telescope
refracting telescope
heliocentric
49. Massive clouds of dust and gases where stars are born
supernova
nebulae
Kuiper Belt
quasar
50. A spectrum of light in which there are no gaps - so that each region blends directly into the next
meteroid
electromagnetic spectrum
continuous spectrum
Jovian planet
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