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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. An extremely bright star of very large diameter and low density
supergiant
astronomical unit (AU)
meteroid
Sir Isaac Newton
2. Point in orbit that is closest to the sun - planet moves faster
protostar
perhelion
photon
phases of the moon
3. Any of numerous small celestial bodies composed of rock and metal that move around the sun (mainly between the orbits of Mars and Jupiter)
asteroid
milky way galaxy
moon
background radiation
4. The theory that states that gravity will over come the expansion of the universe and bring everything together in an implosion
nebula
the big crunch
Halley's Comet
lunar eclipse
5. The luminous cloud of particles surrounding the frozen nucleus of a comet
coma
reflecting telescope
Jovian planet
red shift
6. A very small star with low temperature - reddish in color
red dwarf
nova
red giant
apogee
7. A measure of the amount of light that a star actually emits
absolute magnitude
continuous spectrum
white dwarf
coma
8. A group of stars that form a pattern in the sky
Johannes Kepler
meteorite
galaxy
constellation
9. Stony or metallic object that is the remains of a meteoroid that has reached the earth's surface
reflecting telescope
meteorite
Kuiper Belt
accretion
10. The distance between crests of waves - such as those of the electromagnetic spectrum
retrograde motion
Claudius Ptolemy
Nicolaus Copernicus
wavelength
11. Planets with low densities and are huge gas giants. Jupiter - Saturn - Uranus - Neptune
phases of the moon
constellation
lunar eclipse
Jovian planet
12. A faint star of enormous density
meteroid
emission spectrum
neutron star
white dwarf
13. Brahe's assistant - German astronomer who first discovered the three laws of planetary motion (1571-1630)
Johannes Kepler
emission spectrum
meteroid
black hole
14. An immense cloud of gas (mainly hydrogen) and dust in interstellar space
meteor
Hertzsprung-Russel Diagram
perhelion
nebula
15. Planet with a solid - rocky crust; more dense; Inner planet. Mercury - Venus - Earth - Mars
solstace
terrestrial planet
elliptical galaxy
black hole
16. The most distant point in the orbit of the moon
cepheid variable
solar eclipse
Hubble's law
apogee
17. The most distant point in the orbit of the moon
rotation
electromagnetic spectrum
lunar eclipse
apogee
18. A spectrum of light in which there are no gaps - so that each region blends directly into the next
meteroid
Claudius Ptolemy
solar eclipse
continuous spectrum
19. The study of the universe
radio telescope
astronomy
Galileo Galilei
planetesimal
20. The increase in wavelength of light due to an object moving away from the observer
precession
red shift
planetesimal
earth's tilt
21. Influenced by Copernicus; Built observatory and collected data on the locations of stars and planets for over 20 years
white dwarf
reflecting telescope
Tycho Brahe
terrestrial planet
22. A large cloud of dust and gas that can break apart into smaller pieces and form stars
nebula
perhelion
accretion
Tycho Brahe
23. A variable star that brightens and dims regularly - or pulses - and whose distance can be determined from its period of pulsation
cepheid variable
nova
supernova
galaxy
24. A galaxy shaped like a flattened ball - containing only old stars
terrestrial planet
wavelength
elliptical galaxy
irregular galaxy
25. One of the small asteroid-like bodies that formed the building blocks of the planets
chromatic abberation
red shift
planetesimal
planet
26. Polish astronomer who produced a workable model of the solar system with the sun in the center (1473-1543)
Nicolaus Copernicus
doppler effect
solar eclipse
local group
27. Planet with a solid - rocky crust; more dense; Inner planet. Mercury - Venus - Earth - Mars
main-sequence star
terrestrial planet
white dwarf
radio telescope
28. The blocking of sunlight to the moon that occurs when Earth is directly between the sun and the moon
rotation
lunar eclipse
moon
the big crunch
29. The brightness of a star when viewed from Earth
apparent magnitude
white dwarf
planetesimal
quasar
30. An elongated circle - or oval shape - the shape of the planets orbit
equinox
ellipse
local group
Johannes Kepler
31. Explained movement of planets with retrograde motion
elliptical galaxy
Claudius Ptolemy
supergiant
nebulae
32. Remnant of a star that is so dense that nothing - not even light - can escape its gravity field
nebulae
evolution
neutron star
black hole
33. A star that ejects some of its material in the form of a cloud and become more luminous in the process
nova
quasar
big bang theory
wavelength
34. A spherical region of comets that surrounds the solar system
emission spectrum
Oort Cloud
red shift
nova
35. Brahe's assistant - German astronomer who first discovered the three laws of planetary motion (1571-1630)
evolution
Johannes Kepler
white dwarf
nova
36. A particle of electromagnetic radiation having zero mass and carrying a quantum of energy
red shift
element
photon
earth's tilt
37. 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
nebula
light-year
universal gravitation
parallax
38. The decrease in wavelength of light due to an object moving away from the oberver
blue shift
constellation
planet
Kuiper Belt
39. A contracting cloud of gas and dust with enough mass to form a star
doppler effect
pulsar
parallax
protostar
40. An enormously bright - distant galaxy with a giant black hole at its center
white dwarf
astronomy
aphelion
quasar
41. Radiation left over from the beginning of the universe
meteorite
constellation
doppler effect
background radiation
42. 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
Oort Cloud
meteor
planetesimal
43. The comet discovered in 1705 that repeats itself every 76 years and last appeared in 1986.
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44. Large group of stars - dust - and gas held together by gravity; can be elliptical - spiral - or irregular
Sir Isaac Newton
galaxy
astronomical unit (AU)
retrograde motion
45. A group of about 30 galaxies that includes the Milky Way
local group
nebulae
meteorite
astronomy
46. Radiation left over from the beginning of the universe
background radiation
milky way galaxy
electromagnetic spectrum
heliocentric
47. Massive clouds of dust and gases where stars are born
astronomy
nebulae
doppler effect
white dwarf
48. The elliptical motion of a body as it orbits another body in space
Galileo Galilei
cepheid variable
evolution
Oort Cloud
49. The brilliant explosion of a dying supergiant star
planet
binary star
supernova
white dwarf
50. A model of the solar system in which Earth and the other planets revolve around the sun
constellation
Hubble's law
element
heliocentric