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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. Stony or metallic object that is the remains of a meteoroid that has reached the earth's surface
meteorite
elliptical galaxy
evolution
astronomical unit (AU)
2. 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
planetesimal
comet
cepheid variable
rotation
3. Radiation left over from the beginning of the universe
nebula
background radiation
black hole
rotation
4. 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
coma
Galileo Galilei
big bang theory
emission spectrum
5. Point of moon's orbit when it is nearest the earth
perigee
astronomy
spectroscopy
meteroid
6. Chunk of rock or dust in space
constellation
meteroid
heliocentric
meteorite
7. The farther away a galaxy is - the faster it is moving away
8. Polish astronomer who produced a workable model of the solar system with the sun in the center (1473-1543)
nebulae
nova
Nicolaus Copernicus
meteroid
9. The rainbow effect when light is dispersed through lens
nebula
solar eclipse
refracting telescope
chromatic abberation
10. The elliptical motion of a body as it orbits another body in space
continuous spectrum
radio telescope
perhelion
evolution
11. A space telescope and camera named for a famous astronaut (Edward Hubble) used to study space elements
white dwarf
wavelength
astronomical unit (AU)
Hubble Space Telescope
12. Light distance travels in one year (9.5 trillion km)
radio telescope
astronomy
parallax
light-year
13. The study of the universe
astronomy
Hubble Space Telescope
Jovian planet
planetesimal
14. Any of numerous small celestial bodies composed of rock and metal that move around the sun (mainly between the orbits of Mars and Jupiter)
spiral galaxy
Jovian planet
electromagnetic spectrum
asteroid
15. A variable star that brightens and dims regularly - or pulses - and whose distance can be determined from its period of pulsation
red shift
milky way galaxy
cepheid variable
absolute magnitude
16. Point in orbit that is closest to the sun - planet moves faster
parallax
perhelion
Hubble Space Telescope
apogee
17. A group of about 30 galaxies that includes the Milky Way
elliptical galaxy
quasar
local group
planet
18. An elongated circle - or oval shape - the shape of the planets orbit
astronomy
reflecting telescope
ellipse
solar eclipse
19. The average distance between the Earth and the sun - or approximately 150000000 km
meteroid
Tycho Brahe
astronomical unit (AU)
Hubble's law
20. 23.5° - the reason we have seasons
21. The formation of a celestial object by the effect of gravity pulling together surrounding objects and gases
Hubble's law
Sir Isaac Newton
solstace
accretion
22. The increase in wavelength of light due to an object moving away from the observer
accretion
planetesimal
Nicolaus Copernicus
red shift
23. A star that falls into the main sequence category on the H-are diagram
main-sequence star
spectroscopy
asteroid
parallax
24. Any substance that cannot be broken down into simpler substances
element
perigee
the big crunch
nova
25. The two days of the year on which neither hemisphere is tilted toward or away from the sun
emission spectrum
equinox
planet
Nicolaus Copernicus
26. A star that ejects some of its material in the form of a cloud and become more luminous in the process
nova
earth's tilt
local group
milky way galaxy
27. English mathematician and physicist - discovered the law of universal gravitation
Hertzsprung-Russel Diagram
Sir Isaac Newton
heliocentric
rotation
28. Astronomical telescope that picks up electromagnetic radiations in the radio-frequency range from extra-terrestrial sources
comet
precession
white dwarf
radio telescope
29. Planet with a solid - rocky crust; more dense; Inner planet. Mercury - Venus - Earth - Mars
terrestrial planet
meteroid
reflecting telescope
nebula
30. The study of the spectra of stars by analyzing the spectral properties of the light they give off
spectroscopy
red shift
equinox
continuous spectrum
31. The spectrum of electromagnetic radiation that has passed through a medium that absorbed radiation of certain wavelengths
chromatic abberation
Hubble's law
absorption spectrum
Tycho Brahe
32. Large group of stars - dust - and gas held together by gravity; can be elliptical - spiral - or irregular
solar eclipse
geocentric
galaxy
background radiation
33. A contracting cloud of gas and dust with enough mass to form a star
electromagnetic spectrum
protostar
galaxy cluster
blue shift
34. The spectrum of electromagnetic radiation that has passed through a medium that absorbed radiation of certain wavelengths
electromagnetic spectrum
absorption spectrum
constellation
astronomy
35. A spherical region of comets that surrounds the solar system
coma
ellipse
Oort Cloud
protostar
36. Any natural satellite of a planet
blue shift
evolution
solstace
moon
37. The name of our galaxy - a spiral galaxy that contains about 400 billion stars
rotation
milky way galaxy
Kuiper Belt
retrograde motion
38. A telescope that uses a curved mirror to collect and focus light
light-year
continuous spectrum
reflecting telescope
radio telescope
39. Polish astronomer who produced a workable model of the solar system with the sun in the center (1473-1543)
Nicolaus Copernicus
cepheid variable
local group
Jovian planet
40. Remnant of a star that is so dense that nothing - not even light - can escape its gravity field
black hole
solar eclipse
terrestrial planet
Nicolaus Copernicus
41. A region of the solar system that is just beyond the orbit of neptune and that contains small bodies made mostly of ice
doppler effect
Kuiper Belt
supernova
lunar eclipse
42. A large cloud of dust and gas that can break apart into smaller pieces and form stars
perhelion
supergiant
nebula
geocentric
43. 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
lunar eclipse
electromagnetic spectrum
nova
comet
44. A star that expands and cools once it runs out of hydrogen fuel
apogee
comet
red giant
moon
45. A particle of electromagnetic radiation having zero mass and carrying a quantum of energy
pulsar
elliptical galaxy
photon
comet
46. Explained movement of planets with retrograde motion
supernova
comet
Claudius Ptolemy
apogee
47. Stony or metallic object that is the remains of a meteoroid that has reached the earth's surface
Kuiper Belt
Hubble's law
supergiant
meteorite
48. All of the frequencies or wavelengths of electromagnetic radiation
electromagnetic spectrum
moon
wavelength
background radiation
49. 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
local group
red shift
milky way galaxy
50. The apparent change in position of an object when seen from different places
binary star
local group
absolute magnitude
parallax