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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 theory that states that gravity will over come the expansion of the universe and bring everything together in an implosion
ellipse
nova
nebula
the big crunch
2. The apparent change in position of an object when seen from different places
Sir Isaac Newton
absolute magnitude
supernova
parallax
3. A particle of electromagnetic radiation having zero mass and carrying a quantum of energy
blue shift
red dwarf
photon
refracting telescope
4. Spectrum of electromagnetic radiation emitted by a self-luminous source
light-year
emission spectrum
nova
coma
5. Polish astronomer who produced a workable model of the solar system with the sun in the center (1473-1543)
absorption spectrum
Claudius Ptolemy
Nicolaus Copernicus
phases of the moon
6. 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
parallax
solar eclipse
comet
absorption spectrum
7. An enormously bright - distant galaxy with a giant black hole at its center
comet
solar eclipse
quasar
Johannes Kepler
8. The comet discovered in 1705 that repeats itself every 76 years and last appeared in 1986.
9. Massive clouds of dust and gases where stars are born
meteorite
solar eclipse
nebulae
big bang theory
10. Any of the small solid extraterrestrial bodies that hits the earth's atmosphere
nova
absolute magnitude
meteor
lunar eclipse
11. A spherical region of comets that surrounds the solar system
universal gravitation
lunar eclipse
Oort Cloud
elliptical galaxy
12. A group of about 30 galaxies that includes the Milky Way
Hertzsprung-Russel Diagram
spectroscopy
local group
cepheid variable
13. A spherical region of comets that surrounds the solar system
asteroid
Oort Cloud
local group
electromagnetic spectrum
14. A very small star with low temperature - reddish in color
red dwarf
apogee
rotation
photon
15. A system of galaxies containing from several to thousands of member galaxies
Tycho Brahe
galaxy cluster
the big crunch
refracting telescope
16. A star that ejects some of its material in the form of a cloud and become more luminous in the process
white dwarf
photon
nova
precession
17. The distance between crests of waves - such as those of the electromagnetic spectrum
terrestrial planet
wavelength
constellation
Jovian planet
18. A large body in space that orbits a star and does not produce light of its own
galaxy
comet
pulsar
planet
19. A star that falls into the main sequence category on the H-are diagram
nova
Halley's Comet
main-sequence star
astronomy
20. The rainbow effect when light is dispersed through lens
astronomy
lunar eclipse
chromatic abberation
electromagnetic spectrum
21. The brilliant explosion of a dying supergiant star
light-year
supernova
lunar eclipse
big bang theory
22. A spectrum of light in which there are no gaps - so that each region blends directly into the next
continuous spectrum
white dwarf
asteroid
white dwarf
23. A very small star with low temperature - reddish in color
red dwarf
apparent magnitude
apogee
nebula
24. Chunk of rock or dust in space
white dwarf
absorption spectrum
meteroid
blue shift
25. The average distance between the Earth and the sun - or approximately 150000000 km
meteorite
planetesimal
nebula
astronomical unit (AU)
26. A rapidly spinning neutron star that produces radio waves
pulsar
Tycho Brahe
astronomical unit (AU)
elliptical galaxy
27. The two days of the year on which neither hemisphere is tilted toward or away from the sun
Oort Cloud
astronomy
meteorite
equinox
28. A star that falls into the main sequence category on the H-are diagram
main-sequence star
absorption spectrum
milky way galaxy
emission spectrum
29. Chunk of rock or dust in space
perhelion
Sir Isaac Newton
protostar
meteroid
30. Planet with a solid - rocky crust; more dense; Inner planet. Mercury - Venus - Earth - Mars
terrestrial planet
main-sequence star
doppler effect
nebula
31. The rainbow effect when light is dispersed through lens
galaxy
spiral galaxy
phases of the moon
chromatic abberation
32. A rapidly spinning neutron star that produces radio waves
moon
reflecting telescope
binary star
pulsar
33. A measure of the amount of light that a star actually emits
white dwarf
phases of the moon
absolute magnitude
blue shift
34. Astronomical telescope that picks up electromagnetic radiations in the radio-frequency range from extra-terrestrial sources
radio telescope
Sir Isaac Newton
light-year
Claudius Ptolemy
35. The apparent westward motion of the planets with respect to the stars
element
nebulae
retrograde motion
moon
36. The apparent change in position of an object when seen from different places
perhelion
parallax
solstace
moon
37. When the moon passes between earth and the sun - blocking the sunlight from reaching earth
light-year
solar eclipse
evolution
phases of the moon
38. Any of numerous small celestial bodies composed of rock and metal that move around the sun (mainly between the orbits of Mars and Jupiter)
galaxy cluster
asteroid
radio telescope
evolution
39. A group of stars that form a pattern in the sky
constellation
nebula
galaxy cluster
Oort Cloud
40. A contracting cloud of gas and dust with enough mass to form a star
meteroid
protostar
pulsar
Galileo Galilei
41. The brightness of a star when viewed from Earth
moon
apparent magnitude
light-year
irregular galaxy
42. A star that expands and cools once it runs out of hydrogen fuel
cepheid variable
Sir Isaac Newton
red giant
retrograde motion
43. Change in the apparent frequency of a wave as observer and source move toward or away from each other
red shift
white dwarf
doppler effect
black hole
44. 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
refracting telescope
galaxy cluster
red dwarf
45. 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
astronomy
accretion
perhelion
46. A galaxy with a bulge in the middle and arms that spiral outward in a pinwheel pattern
refracting telescope
red giant
geocentric
spiral galaxy
47. The motion of a spinning body (as a top) in which it wobbles so that the axis of rotation sweeps out a cone
Nicolaus Copernicus
apparent magnitude
ellipse
precession
48. A telescope that uses a curved mirror to collect and focus light
emission spectrum
rotation
reflecting telescope
neutron star
49. 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.
rotation
radio telescope
earth's tilt
Galileo Galilei
50. An immense cloud of gas (mainly hydrogen) and dust in interstellar space
nebula
Kuiper Belt
geocentric
electromagnetic spectrum