SUBJECTS
|
BROWSE
|
CAREER CENTER
|
POPULAR
|
JOIN
|
LOGIN
Business Skills
|
Soft Skills
|
Basic Literacy
|
Certifications
About
|
Help
|
Privacy
|
Terms
|
Email
Search
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. 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
comet
absolute magnitude
aphelion
background radiation
2. A model of the universe based on the assumption that the sun - moon - and planets all orbit Earth
background radiation
supernova
supergiant
geocentric
3. A galaxy shaped like a flattened ball - containing only old stars
elliptical galaxy
phases of the moon
Galileo Galilei
ellipse
4. The apparent westward motion of the planets with respect to the stars
Hertzsprung-Russel Diagram
Claudius Ptolemy
earth's tilt
retrograde motion
5. When the moon passes between earth and the sun - blocking the sunlight from reaching earth
nebula
earth's tilt
solar eclipse
chromatic abberation
6. Influenced by Copernicus; Built observatory and collected data on the locations of stars and planets for over 20 years
doppler effect
blue shift
black hole
Tycho Brahe
7. A galaxy with a bulge in the middle and arms that spiral outward in a pinwheel pattern
Kuiper Belt
spiral galaxy
irregular galaxy
apogee
8. Planets with low densities and are huge gas giants. Jupiter - Saturn - Uranus - Neptune
lunar eclipse
nebula
Jovian planet
chromatic abberation
9. The luminous cloud of particles surrounding the frozen nucleus of a comet
irregular galaxy
absorption spectrum
universal gravitation
coma
10. Optical telescope that has a large convex lens that produces an image that is viewed through the eyepiece
elliptical galaxy
parallax
refracting telescope
elliptical galaxy
11. The spinning of Earth on its axis
planetesimal
astronomy
solar eclipse
rotation
12. A star that expands and cools once it runs out of hydrogen fuel
red giant
continuous spectrum
black hole
Hubble Space Telescope
13. The theory that states that gravity will over come the expansion of the universe and bring everything together in an implosion
the big crunch
constellation
supernova
Galileo Galilei
14. All of the frequencies or wavelengths of electromagnetic radiation
electromagnetic spectrum
apogee
terrestrial planet
photon
15. Remnant of a star that is so dense that nothing - not even light - can escape its gravity field
black hole
Tycho Brahe
red giant
galaxy cluster
16. When the moon passes between earth and the sun - blocking the sunlight from reaching earth
solar eclipse
pulsar
planetesimal
white dwarf
17. The name of our galaxy - a spiral galaxy that contains about 400 billion stars
milky way galaxy
galaxy
local group
accretion
18. Galaxy with no particular shape - contains new & old stars
absorption spectrum
irregular galaxy
black hole
galaxy cluster
19. A star that ejects some of its material in the form of a cloud and become more luminous in the process
Sir Isaac Newton
background radiation
nova
black hole
20. A spectrum of light in which there are no gaps - so that each region blends directly into the next
Tycho Brahe
Oort Cloud
solar eclipse
continuous spectrum
21. The most distant point in the orbit of the moon
electromagnetic spectrum
apogee
supernova
nebulae
22. A system of two stars that revolve around each other under their mutual gravitation
binary star
supergiant
irregular galaxy
accretion
23. The rainbow effect when light is dispersed through lens
precession
heliocentric
chromatic abberation
Johannes Kepler
24. The increase in wavelength of light due to an object moving away from the observer
red shift
Johannes Kepler
parallax
nebulae
25. 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
electromagnetic spectrum
big bang theory
black hole
background radiation
26. A particle of electromagnetic radiation having zero mass and carrying a quantum of energy
photon
meteorite
astronomical unit (AU)
doppler effect
27. An immense cloud of gas (mainly hydrogen) and dust in interstellar space
heliocentric
nebula
moon
Johannes Kepler
28. Stony or metallic object that is the remains of a meteoroid that has reached the earth's surface
geocentric
blue shift
nebula
meteorite
29. Explained movement of planets with retrograde motion
Claudius Ptolemy
pulsar
precession
coma
30. An elongated circle - or oval shape - the shape of the planets orbit
meteorite
ellipse
phases of the moon
earth's tilt
31. Remnant of a star that is so dense that nothing - not even light - can escape its gravity field
terrestrial planet
precession
black hole
accretion
32. 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
Kuiper Belt
precession
universal gravitation
electromagnetic spectrum
33. 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.
binary star
wavelength
Galileo Galilei
constellation
34. The brightness of a star when viewed from Earth
Kuiper Belt
heliocentric
Jovian planet
apparent magnitude
35. Massive clouds of dust and gases where stars are born
main-sequence star
phases of the moon
asteroid
nebulae
36. The luminous cloud of particles surrounding the frozen nucleus of a comet
supergiant
moon
coma
apparent magnitude
37. Point of moon's orbit when it is nearest the earth
Hertzsprung-Russel Diagram
perigee
big bang theory
equinox
38. A model of the solar system in which Earth and the other planets revolve around the sun
nebula
absorption spectrum
local group
heliocentric
39. Varying amounts of the lighted moon as seen from earth
neutron star
solar eclipse
Oort Cloud
phases of the moon
40. A faint star of enormous density
radio telescope
main-sequence star
white dwarf
Galileo Galilei
41. The comet discovered in 1705 that repeats itself every 76 years and last appeared in 1986.
42. An extremely bright star of very large diameter and low density
element
supergiant
absolute magnitude
red shift
43. A region of the solar system that is just beyond the orbit of neptune and that contains small bodies made mostly of ice
parallax
Galileo Galilei
Hubble Space Telescope
Kuiper Belt
44. A spherical region of comets that surrounds the solar system
white dwarf
Oort Cloud
Jovian planet
irregular galaxy
45. Any of the small solid extraterrestrial bodies that hits the earth's atmosphere
quasar
Jovian planet
nebulae
meteor
46. Radiation left over from the beginning of the universe
comet
Galileo Galilei
background radiation
blue shift
47. A rapidly spinning neutron star that produces radio waves
pulsar
lunar eclipse
continuous spectrum
blue shift
48. A very small star with low temperature - reddish in color
ellipse
red dwarf
Halley's Comet
apogee
49. The place in the orbit of a planet where the planet is farthest from the sun
accretion
evolution
supergiant
aphelion
50. Light distance travels in one year (9.5 trillion km)
Nicolaus Copernicus
meteroid
light-year
red shift