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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 elliptical motion of a body as it orbits another body in space
evolution
universal gravitation
perhelion
solar eclipse
2. Brahe's assistant - German astronomer who first discovered the three laws of planetary motion (1571-1630)
Johannes Kepler
red shift
electromagnetic spectrum
Nicolaus Copernicus
3. The blocking of sunlight to the moon that occurs when Earth is directly between the sun and the moon
binary star
geocentric
lunar eclipse
pulsar
4. When the moon passes between earth and the sun - blocking the sunlight from reaching earth
the big crunch
protostar
solar eclipse
evolution
5. A spherical region of comets that surrounds the solar system
neutron star
comet
phases of the moon
Oort Cloud
6. Any of numerous small celestial bodies composed of rock and metal that move around the sun (mainly between the orbits of Mars and Jupiter)
perigee
radio telescope
asteroid
solar eclipse
7. The apparent westward motion of the planets with respect to the stars
retrograde motion
Oort Cloud
absolute magnitude
big bang theory
8. The name of our galaxy - a spiral galaxy that contains about 400 billion stars
supernova
milky way galaxy
Oort Cloud
electromagnetic spectrum
9. Any of numerous small celestial bodies composed of rock and metal that move around the sun (mainly between the orbits of Mars and Jupiter)
main-sequence star
asteroid
absolute magnitude
Jovian planet
10. Point in orbit that is closest to the sun - planet moves faster
cepheid variable
perhelion
milky way galaxy
galaxy
11. Any of the small solid extraterrestrial bodies that hits the earth's atmosphere
meteor
heliocentric
lunar eclipse
white dwarf
12. Large group of stars - dust - and gas held together by gravity; can be elliptical - spiral - or irregular
galaxy
nebulae
lunar eclipse
comet
13. 23.5° - the reason we have seasons
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14. Explained movement of planets with retrograde motion
geocentric
Claudius Ptolemy
photon
astronomy
15. Optical telescope that has a large convex lens that produces an image that is viewed through the eyepiece
irregular galaxy
refracting telescope
accretion
phases of the moon
16. An extremely bright star of very large diameter and low density
Kuiper Belt
background radiation
supernova
supergiant
17. The place in the orbit of a planet where the planet is farthest from the sun
galaxy
aphelion
elliptical galaxy
binary star
18. The motion of a spinning body (as a top) in which it wobbles so that the axis of rotation sweeps out a cone
refracting telescope
quasar
Halley's Comet
precession
19. A telescope that uses a curved mirror to collect and focus light
phases of the moon
quasar
nebula
reflecting telescope
20. A telescope that uses a curved mirror to collect and focus light
reflecting telescope
aphelion
geocentric
solstace
21. A star that falls into the main sequence category on the H-are diagram
reflecting telescope
main-sequence star
Nicolaus Copernicus
element
22. A star that ejects some of its material in the form of a cloud and become more luminous in the process
nova
coma
neutron star
white dwarf
23. The farther away a galaxy is - the faster it is moving away
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24. A system of two stars that revolve around each other under their mutual gravitation
binary star
absolute magnitude
evolution
Galileo Galilei
25. The decrease in wavelength of light due to an object moving away from the oberver
supergiant
Johannes Kepler
radio telescope
blue shift
26. A faint star of enormous density
terrestrial planet
white dwarf
moon
planetesimal
27. Polish astronomer who produced a workable model of the solar system with the sun in the center (1473-1543)
background radiation
Nicolaus Copernicus
solar eclipse
planetesimal
28. The apparent westward motion of the planets with respect to the stars
lunar eclipse
comet
retrograde motion
nova
29. A large cloud of dust and gas that can break apart into smaller pieces and form stars
nebula
phases of the moon
red shift
Hubble's law
30. 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
local group
equinox
universal gravitation
blue shift
31. Any natural satellite of a planet
emission spectrum
main-sequence star
big bang theory
moon
32. Influenced by Copernicus; Built observatory and collected data on the locations of stars and planets for over 20 years
red giant
Sir Isaac Newton
Tycho Brahe
blue shift
33. One of the small asteroid-like bodies that formed the building blocks of the planets
planetesimal
supernova
light-year
Hertzsprung-Russel Diagram
34. Varying amounts of the lighted moon as seen from earth
Nicolaus Copernicus
phases of the moon
universal gravitation
element
35. The apparent change in position of an object when seen from different places
Claudius Ptolemy
parallax
spectroscopy
red shift
36. The average distance between the Earth and the sun - or approximately 150000000 km
astronomical unit (AU)
astronomy
Nicolaus Copernicus
Claudius Ptolemy
37. Astronomical telescope that picks up electromagnetic radiations in the radio-frequency range from extra-terrestrial sources
red giant
radio telescope
supernova
planet
38. A particle of electromagnetic radiation having zero mass and carrying a quantum of energy
evolution
photon
nebulae
white dwarf
39. The most distant point in the orbit of the moon
black hole
chromatic abberation
apogee
spectroscopy
40. The increase in wavelength of light due to an object moving away from the observer
red shift
Hubble's law
protostar
coma
41. A group of about 30 galaxies that includes the Milky Way
planetesimal
constellation
parallax
local group
42. Change in the apparent frequency of a wave as observer and source move toward or away from each other
doppler effect
Jovian planet
Johannes Kepler
Hertzsprung-Russel Diagram
43. The study of the spectra of stars by analyzing the spectral properties of the light they give off
supergiant
comet
absolute magnitude
spectroscopy
44. 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
elliptical galaxy
comet
nova
moon
45. A region of the solar system that is just beyond the orbit of neptune and that contains small bodies made mostly of ice
solstace
Kuiper Belt
spectroscopy
Claudius Ptolemy
46. The spinning of Earth on its axis
Halley's Comet
rotation
planet
red giant
47. The luminous cloud of particles surrounding the frozen nucleus of a comet
milky way galaxy
coma
solar eclipse
refracting telescope
48. The rainbow effect when light is dispersed through lens
chromatic abberation
equinox
geocentric
astronomical unit (AU)
49. The increase in wavelength of light due to an object moving away from the observer
red shift
reflecting telescope
the big crunch
Jovian planet
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
Tycho Brahe
big bang theory
solstace
Jovian planet