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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. Point in orbit that is closest to the sun - planet moves faster
local group
Kuiper Belt
radio telescope
perhelion
2. A group of about 30 galaxies that includes the Milky Way
Johannes Kepler
geocentric
local group
background radiation
3. Remnant of a star that is so dense that nothing - not even light - can escape its gravity field
black hole
spectroscopy
cepheid variable
Hertzsprung-Russel Diagram
4. The apparent westward motion of the planets with respect to the stars
meteor
precession
retrograde motion
protostar
5. The luminous cloud of particles surrounding the frozen nucleus of a comet
irregular galaxy
element
coma
refracting telescope
6. A group of about 30 galaxies that includes the Milky Way
comet
red shift
local group
reflecting telescope
7. A galaxy with a bulge in the middle and arms that spiral outward in a pinwheel pattern
blue shift
meteor
spiral galaxy
local group
8. The two days of the year on which neither hemisphere is tilted toward or away from the sun
galaxy cluster
Kuiper Belt
blue shift
equinox
9. Point in orbit that is closest to the sun - planet moves faster
planetesimal
meteroid
perhelion
red dwarf
10. Galaxy with no particular shape - contains new & old stars
supergiant
big bang theory
irregular galaxy
radio telescope
11. The spectrum of electromagnetic radiation that has passed through a medium that absorbed radiation of certain wavelengths
meteor
ellipse
absorption spectrum
precession
12. A model of the solar system in which Earth and the other planets revolve around the sun
constellation
heliocentric
chromatic abberation
binary star
13. A very small star with low temperature - reddish in color
red dwarf
absolute magnitude
asteroid
elliptical galaxy
14. A galaxy with a bulge in the middle and arms that spiral outward in a pinwheel pattern
galaxy
red shift
cepheid variable
spiral galaxy
15. The name of our galaxy - a spiral galaxy that contains about 400 billion stars
doppler effect
Sir Isaac Newton
milky way galaxy
astronomy
16. The distance between crests of waves - such as those of the electromagnetic spectrum
element
spiral galaxy
coma
wavelength
17. The place in the orbit of a planet where the planet is farthest from the sun
evolution
Nicolaus Copernicus
photon
aphelion
18. A particle of electromagnetic radiation having zero mass and carrying a quantum of energy
constellation
photon
galaxy cluster
absolute magnitude
19. Any of numerous small celestial bodies composed of rock and metal that move around the sun (mainly between the orbits of Mars and Jupiter)
Nicolaus Copernicus
asteroid
absorption spectrum
ellipse
20. The blocking of sunlight to the moon that occurs when Earth is directly between the sun and the moon
meteorite
lunar eclipse
coma
Tycho Brahe
21. The study of the universe
spiral galaxy
light-year
astronomy
solar eclipse
22. The average distance between the Earth and the sun - or approximately 150000000 km
constellation
wavelength
astronomical unit (AU)
chromatic abberation
23. 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
neutron star
big bang theory
meteroid
Galileo Galilei
24. A variable star that brightens and dims regularly - or pulses - and whose distance can be determined from its period of pulsation
coma
Galileo Galilei
cepheid variable
Sir Isaac Newton
25. A model of the universe based on the assumption that the sun - moon - and planets all orbit Earth
planetesimal
geocentric
moon
white dwarf
26. A star that falls into the main sequence category on the H-are diagram
cepheid variable
comet
nebulae
main-sequence star
27. An enormously bright - distant galaxy with a giant black hole at its center
galaxy cluster
quasar
the big crunch
red dwarf
28. When the northern or southern most point on earth receives the most sun because the earth is tilted toward the sun
neutron star
evolution
blue shift
solstace
29. Polish astronomer who produced a workable model of the solar system with the sun in the center (1473-1543)
Nicolaus Copernicus
nova
Halley's Comet
Johannes Kepler
30. A galaxy shaped like a flattened ball - containing only old stars
retrograde motion
neutron star
elliptical galaxy
Claudius Ptolemy
31. Remnant of a star that is so dense that nothing - not even light - can escape its gravity field
red dwarf
galaxy
parallax
black hole
32. The luminous cloud of particles surrounding the frozen nucleus of a comet
protostar
Galileo Galilei
coma
Johannes Kepler
33. A faint star of enormous density
white dwarf
nebula
main-sequence star
Halley's Comet
34. A region of the solar system that is just beyond the orbit of neptune and that contains small bodies made mostly of ice
Halley's Comet
Kuiper Belt
Hubble's law
radio telescope
35. 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
reflecting telescope
earth's tilt
red shift
milky way galaxy
36. Massive clouds of dust and gases where stars are born
nebulae
red giant
neutron star
light-year
37. An enormously bright - distant galaxy with a giant black hole at its center
perigee
quasar
spectroscopy
perhelion
38. Radiation left over from the beginning of the universe
big bang theory
terrestrial planet
background radiation
emission spectrum
39. 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.
spiral galaxy
parallax
Galileo Galilei
protostar
40. Optical telescope that has a large convex lens that produces an image that is viewed through the eyepiece
refracting telescope
nebula
Galileo Galilei
planetesimal
41. The spinning of Earth on its axis
red giant
solstace
rotation
reflecting telescope
42. Massive clouds of dust and gases where stars are born
milky way galaxy
nebulae
emission spectrum
Jovian planet
43. A telescope that uses a curved mirror to collect and focus light
constellation
meteorite
reflecting telescope
continuous spectrum
44. A spherical region of comets that surrounds the solar system
pulsar
Hubble's law
Oort Cloud
nebula
45. A star that expands and cools once it runs out of hydrogen fuel
astronomy
red giant
universal gravitation
terrestrial planet
46. An extremely bright star of very large diameter and low density
reflecting telescope
supergiant
pulsar
element
47. A galaxy shaped like a flattened ball - containing only old stars
elliptical galaxy
white dwarf
parallax
spiral galaxy
48. A group of stars that form a pattern in the sky
ellipse
black hole
elliptical galaxy
constellation
49. A contracting cloud of gas and dust with enough mass to form a star
perhelion
red shift
electromagnetic spectrum
protostar
50. A large cloud of dust and gas that can break apart into smaller pieces and form stars
spectroscopy
quasar
nebula
Sir Isaac Newton