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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. Brahe's assistant - German astronomer who first discovered the three laws of planetary motion (1571-1630)
big bang theory
Johannes Kepler
red giant
white dwarf
2. The blocking of sunlight to the moon that occurs when Earth is directly between the sun and the moon
lunar eclipse
meteor
red shift
protostar
3. An immense cloud of gas (mainly hydrogen) and dust in interstellar space
Claudius Ptolemy
red shift
nebula
big bang theory
4. Remnant of a star that is so dense that nothing - not even light - can escape its gravity field
nebulae
accretion
black hole
earth's tilt
5. Any substance that cannot be broken down into simpler substances
absorption spectrum
Jovian planet
planet
element
6. The apparent change in position of an object when seen from different places
galaxy cluster
main-sequence star
parallax
black hole
7. Any of the small solid extraterrestrial bodies that hits the earth's atmosphere
constellation
meteor
parallax
asteroid
8. A galaxy with a bulge in the middle and arms that spiral outward in a pinwheel pattern
continuous spectrum
Halley's Comet
absorption spectrum
spiral galaxy
9. The apparent change in position of an object when seen from different places
precession
meteor
parallax
aphelion
10. An immense cloud of gas (mainly hydrogen) and dust in interstellar space
nebula
continuous spectrum
background radiation
moon
11. The spectrum of electromagnetic radiation that has passed through a medium that absorbed radiation of certain wavelengths
astronomical unit (AU)
absorption spectrum
elliptical galaxy
red shift
12. The brightness of a star when viewed from Earth
reflecting telescope
apparent magnitude
white dwarf
the big crunch
13. A spherical region of comets that surrounds the solar system
Oort Cloud
Nicolaus Copernicus
meteor
absorption spectrum
14. A large body in space that orbits a star and does not produce light of its own
planet
Sir Isaac Newton
Hertzsprung-Russel Diagram
red giant
15. The theory that states that gravity will over come the expansion of the universe and bring everything together in an implosion
spectroscopy
the big crunch
universal gravitation
supergiant
16. A group of stars that form a pattern in the sky
binary star
planet
constellation
Jovian planet
17. A galaxy with a bulge in the middle and arms that spiral outward in a pinwheel pattern
continuous spectrum
spiral galaxy
retrograde motion
astronomy
18. An elongated circle - or oval shape - the shape of the planets orbit
black hole
perhelion
irregular galaxy
ellipse
19. The rainbow effect when light is dispersed through lens
geocentric
rotation
nebula
chromatic abberation
20. Stony or metallic object that is the remains of a meteoroid that has reached the earth's surface
meteorite
astronomical unit (AU)
elliptical galaxy
white dwarf
21. Large group of stars - dust - and gas held together by gravity; can be elliptical - spiral - or irregular
background radiation
galaxy
red shift
quasar
22. The blocking of sunlight to the moon that occurs when Earth is directly between the sun and the moon
equinox
Kuiper Belt
neutron star
lunar eclipse
23. 23.5° - the reason we have seasons
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24. A large cloud of dust and gas that can break apart into smaller pieces and form stars
nebula
spectroscopy
Galileo Galilei
parallax
25. Remnant of a star that is so dense that nothing - not even light - can escape its gravity field
Sir Isaac Newton
black hole
earth's tilt
Kuiper Belt
26. 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
supergiant
elliptical galaxy
Claudius Ptolemy
27. The spinning of Earth on its axis
rotation
apogee
light-year
cepheid variable
28. The rainbow effect when light is dispersed through lens
solstace
chromatic abberation
planetesimal
universal gravitation
29. The study of the spectra of stars by analyzing the spectral properties of the light they give off
irregular galaxy
spectroscopy
doppler effect
universal gravitation
30. A telescope that uses a curved mirror to collect and focus light
irregular galaxy
galaxy cluster
reflecting telescope
pulsar
31. When the northern or southern most point on earth receives the most sun because the earth is tilted toward the sun
earth's tilt
red shift
universal gravitation
solstace
32. Any substance that cannot be broken down into simpler substances
Tycho Brahe
binary star
element
galaxy cluster
33. The brilliant explosion of a dying supergiant star
equinox
doppler effect
absorption spectrum
supernova
34. When the northern or southern most point on earth receives the most sun because the earth is tilted toward the sun
Galileo Galilei
chromatic abberation
solstace
emission spectrum
35. A particle of electromagnetic radiation having zero mass and carrying a quantum of energy
Hubble's law
photon
spiral galaxy
Hubble Space Telescope
36. The decrease in wavelength of light due to an object moving away from the oberver
perigee
meteorite
blue shift
protostar
37. When the moon passes between earth and the sun - blocking the sunlight from reaching earth
solar eclipse
nova
lunar eclipse
rotation
38. One of the small asteroid-like bodies that formed the building blocks of the planets
red shift
planetesimal
background radiation
wavelength
39. Any natural satellite of a planet
retrograde motion
terrestrial planet
red shift
moon
40. A model of the universe based on the assumption that the sun - moon - and planets all orbit Earth
blue shift
geocentric
moon
accretion
41. An elongated circle - or oval shape - the shape of the planets orbit
Galileo Galilei
apogee
ellipse
supergiant
42. A spectrum of light in which there are no gaps - so that each region blends directly into the next
supernova
nebula
continuous spectrum
aphelion
43. A model of the solar system in which Earth and the other planets revolve around the sun
geocentric
galaxy
heliocentric
Oort Cloud
44. English mathematician and physicist - discovered the law of universal gravitation
elliptical galaxy
retrograde motion
equinox
Sir Isaac Newton
45. A system of galaxies containing from several to thousands of member galaxies
moon
Claudius Ptolemy
galaxy
galaxy cluster
46. Large group of stars - dust - and gas held together by gravity; can be elliptical - spiral - or irregular
galaxy
moon
nebulae
astronomy
47. The farther away a galaxy is - the faster it is moving away
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48. A group of about 30 galaxies that includes the Milky Way
ellipse
local group
cepheid variable
constellation
49. The brightness of a star when viewed from Earth
apparent magnitude
emission spectrum
binary star
neutron star
50. 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
radio telescope
black hole
big bang theory
continuous spectrum