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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. The study of the universe
astronomy
Hertzsprung-Russel Diagram
Johannes Kepler
elliptical galaxy
2. Explained movement of planets with retrograde motion
perhelion
Galileo Galilei
Claudius Ptolemy
elliptical galaxy
3. A region of the solar system that is just beyond the orbit of neptune and that contains small bodies made mostly of ice
Kuiper Belt
moon
perhelion
evolution
4. Optical telescope that has a large convex lens that produces an image that is viewed through the eyepiece
supergiant
Sir Isaac Newton
solstace
refracting telescope
5. A variable star that brightens and dims regularly - or pulses - and whose distance can be determined from its period of pulsation
cepheid variable
solar eclipse
lunar eclipse
coma
6. An elongated circle - or oval shape - the shape of the planets orbit
precession
ellipse
Jovian planet
big bang theory
7. 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
moon
Sir Isaac Newton
milky way galaxy
8. The theory that states that gravity will over come the expansion of the universe and bring everything together in an implosion
the big crunch
Oort Cloud
rotation
Galileo Galilei
9. A spherical region of comets that surrounds the solar system
Hertzsprung-Russel Diagram
Oort Cloud
irregular galaxy
nebulae
10. The apparent westward motion of the planets with respect to the stars
universal gravitation
meteroid
reflecting telescope
retrograde motion
11. The elliptical motion of a body as it orbits another body in space
absolute magnitude
Sir Isaac Newton
doppler effect
evolution
12. An enormously bright - distant galaxy with a giant black hole at its center
spectroscopy
red dwarf
element
quasar
13. An extremely bright star of very large diameter and low density
supergiant
white dwarf
element
nebula
14. A variable star that brightens and dims regularly - or pulses - and whose distance can be determined from its period of pulsation
protostar
cepheid variable
photon
nebulae
15. The increase in wavelength of light due to an object moving away from the observer
red shift
Kuiper Belt
neutron star
radio telescope
16. A galaxy with a bulge in the middle and arms that spiral outward in a pinwheel pattern
perigee
emission spectrum
radio telescope
spiral galaxy
17. A very small star with low temperature - reddish in color
moon
binary star
pulsar
red dwarf
18. The decrease in wavelength of light due to an object moving away from the oberver
neutron star
Johannes Kepler
blue shift
aphelion
19. A rapidly spinning neutron star that produces radio waves
apparent magnitude
aphelion
retrograde motion
pulsar
20. 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
Halley's Comet
element
geocentric
21. Radiation left over from the beginning of the universe
planetesimal
protostar
ellipse
background radiation
22. The formation of a celestial object by the effect of gravity pulling together surrounding objects and gases
accretion
nebulae
nebula
nova
23. 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
astronomy
chromatic abberation
comet
milky way galaxy
24. A star that expands and cools once it runs out of hydrogen fuel
red giant
moon
apogee
nebulae
25. Point in orbit that is closest to the sun - planet moves faster
Jovian planet
astronomy
nova
perhelion
26. Varying amounts of the lighted moon as seen from earth
big bang theory
spectroscopy
phases of the moon
constellation
27. 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
spectroscopy
perhelion
red shift
supergiant
28. A star that falls into the main sequence category on the H-are diagram
main-sequence star
apogee
lunar eclipse
parallax
29. Planets with low densities and are huge gas giants. Jupiter - Saturn - Uranus - Neptune
earth's tilt
Oort Cloud
galaxy
Jovian planet
30. 23.5° - the reason we have seasons
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31. A galaxy with a bulge in the middle and arms that spiral outward in a pinwheel pattern
spiral galaxy
earth's tilt
Sir Isaac Newton
refracting telescope
32. The rainbow effect when light is dispersed through lens
chromatic abberation
parallax
irregular galaxy
lunar eclipse
33. Any substance that cannot be broken down into simpler substances
Jovian planet
solstace
neutron star
element
34. Stony or metallic object that is the remains of a meteoroid that has reached the earth's surface
element
heliocentric
meteorite
Kuiper Belt
35. Explained movement of planets with retrograde motion
asteroid
Hubble's law
Claudius Ptolemy
radio telescope
36. A very small star with low temperature - reddish in color
comet
red dwarf
apparent magnitude
wavelength
37. The luminous cloud of particles surrounding the frozen nucleus of a comet
ellipse
absolute magnitude
coma
perhelion
38. The blocking of sunlight to the moon that occurs when Earth is directly between the sun and the moon
chromatic abberation
lunar eclipse
refracting telescope
protostar
39. A telescope that uses a curved mirror to collect and focus light
Oort Cloud
terrestrial planet
Sir Isaac Newton
reflecting telescope
40. When the moon passes between earth and the sun - blocking the sunlight from reaching earth
equinox
black hole
solar eclipse
red shift
41. Polish astronomer who produced a workable model of the solar system with the sun in the center (1473-1543)
Nicolaus Copernicus
Claudius Ptolemy
cepheid variable
perigee
42. All of the frequencies or wavelengths of electromagnetic radiation
black hole
pulsar
electromagnetic spectrum
phases of the moon
43. The comet discovered in 1705 that repeats itself every 76 years and last appeared in 1986.
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44. The farther away a galaxy is - the faster it is moving away
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45. English mathematician and physicist - discovered the law of universal gravitation
Hubble's law
constellation
local group
Sir Isaac Newton
46. A large body in space that orbits a star and does not produce light of its own
evolution
nova
reflecting telescope
planet
47. Point of moon's orbit when it is nearest the earth
galaxy
moon
perigee
accretion
48. A contracting cloud of gas and dust with enough mass to form a star
protostar
phases of the moon
Tycho Brahe
pulsar
49. A group of stars that form a pattern in the sky
constellation
Hubble Space Telescope
red shift
blue shift
50. The name of our galaxy - a spiral galaxy that contains about 400 billion stars
milky way galaxy
earth's tilt
quasar
continuous spectrum