SUBJECTS
|
BROWSE
|
CAREER CENTER
|
POPULAR
|
JOIN
|
LOGIN
Business Skills
|
Soft Skills
|
Basic Literacy
|
Certifications
About
|
Help
|
Privacy
|
Terms
|
Email
Search
Test your basic knowledge |
Cosmology
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. When the Sun is farthest north of the celestial equator (about June 22)
Summer Solstice
self-propagating star formation
Perihelion
Eclipses of the Moons of Jupiter
2. The cosmological principle is the assumption that the universe is isotropic and homogeneous.The Big Bang assumes it to be a correct principle so that what we observe is exactly like What is too far away to be observed.
cosmic fireball
greehouse effects
Electromagnetic Radiation
Cosmological Principle
3. Mercury - Venus - Earth - Mars
Reflector
Celestial Equator
least dense
Terrestrial Planets
4. The apparent path of the Sun through the stars on the celestial sphere.
Grand design spirals
Atomic Number
Ecliptic
greatest elongation
5. Ancient stream channels - flood planes - and sedimentary-type rock. Frozen water is found in the polar ice caps and in the soil.
shape and color of ELLIPTICAL galaxies
Reflector
Black Hole
evidence of water on mars
6. The amount an image is enlarged by a telescope
Magnification
Dwarf planets
Bulge
Big Crunch
7. The linear correlation between the rate of the expansion of the universe and distance. Says that as galaxies get farther away in space - the speed with which they recede from us increases. So we can measure the amount of recessional velocity and use
coma
Cassegrain Focus
Void
Hubble law
8. A particle of light
Cosmic Microwave Background (CMB)
Photon
Light Pollution
Observations of distant type Ia supernovae indicate that the expansion of the universe is speeding up with time - not slowing down! So there must be a force causing this.
9. Either Io -Europa - Ganymede - or Callisto
Red Giant Branch Star
Galilean satellite
Red Giant
Density Wave
10. The apparent path of the Sun through the stars on the celestial sphere.
Ecliptic
Autumnal Equinox
Seeing
Apparent Magnitude
11. A planet orbiting about a distant star
Electromagnetic Radiation: X-Ray
Autumnal Equinox
Extrasolar Planet
Absolute Magnitude
12. Jupiter
most moons
Corona
Gravity only pulls matter back together. Therefore - if gravity is the only force that operates on cosmic scales then the expansion of the universe should decrease with time. The critical density is the value of matter density sufficient to halt the
deferent
13. The process similar to conduction by which energy moves from the solar core to the convective layer
Winter Solstice
Gamma ray bursts
regolith
Radiative Diffusion
14. A phenomenon seen when the Earth passes through the orbit of a burned out comet
Extrasolar Planet
Electromagnetic Radiation: X-Ray
meteor shower
Earth resurfaces itself due to erosion and plate tectonics - while the moon has neither.
15. Wave- only waves cause an interference pattern when passing through a double slit - particle- only particles deposit energy at specific locations (the way an image builds up on digital camera)
Light: travels like a wave - detected like a particle
epicycle
greatest elongation
Electromagnetic Radiation
16. A two-filter measure of the color - and hence temperature - of a star.
Color Index
Particle Horizon
Red Giant Branch Star
Emission Spectrum
17. Jupiter - Saturn - Uranus - Neptune
Jovian Planets
Eyepiece Lens
disk
great red spot
18. A planet that is closer to the sun than the earth
least dense
inferior planets
Spectral Lines
Electromagnetic Radiation: Gamma Ray
19. An element of a highly efficient - two-dimensional electronic light detector
Pixel
Geocentric
aphelion
protostar
20. VENUS
Clouds of sufuric acid (very inhospitable and brightest object in the sky) - process called greenhouse affect traps radiation making it 900 degrees at times - spins with retrograde rotation (sun rises in west) and takes 58.4 days for it to set. Thick
MOONS: most geologically active
open star clusters
contrast northern lowlands and the southern highlands of mars...
21. The powdered stone fragments that make up the lunar 'soil'
planetary nebula
regolith
Plank's Law
greatest elongation
22. Places in the asteroid belt - caused by resonance with Jupiter - where there are no asteroids
Kirkwood gaps
mare basalt
blazar
Chandrasekhar Limit
23. Clouds of low density gas often found glowing faintly on either side of an AGN.
Wein's Law
Kuiper belt
Neutron Star
radio lobe
24. The fate of the universe if it is closed. The universe expanding as much as possible and then retracting
Big Crunch
Annular Eclipse
accretion
Jovian Planets
25. The family of radiant energy that includes light as a subset
Parsec
most eccentric orbit
coma
Electromagnetic Radiation
26. The rotation period of the Earth measured relative to the Sun.
bulge
A family of radiant energy- includes light
nova
Synodic Day
27. The location in an H-are diagram of a star cluster - where stars have just left the main sequence. Used to estimate the cluster age.
Seyfert galaxy
force
Dark Matter
Turn off Point
28. Disk dust grains are made of all the elements that are not in gaseous form in space which blocks starlight and causes interstellar extinction
Jupiters red spot
thinnest atmosphere
cosmological principle
interstellar dust
29. The nuclei of very distant galaxies. Likely a manifestation of supermassive black holes
Quasar
Parsec
radio galaxy
Galilean satellite
30. A collection of comets in the plane of the solar system - located beyond the orbit of Pluto
Sb spiral galaxy
tectonics of Mars
2 Reasons Why there are Supermassive Black holes at the center of every Galaxy
Kuiper belt
31. The study of the universe as a whole.
hottest surface
Cassegrain Focus
Perihelion
cosmology
32. An efficient - two-dimensional electronic light detector. Common in digital cameras - they revolutionized astronomical imaging
Electromagnetic Radiation: Microwave
Spectroscopic parallax
CCD
In an expanding universe all galaxies see all other galaxies that are not gravitationally bound to them receding away. This is what we see in the Hubble Law. We infer that the Hubble law also holds true for all other galaxies.
33. Centered on the sun.
AGN
Proton-proton chain
Heliocentric
How is winding dilemma solved?
34. Material that shoots rapidly out into space. Flares cause Auroras
In an expanding universe all galaxies see all other galaxies that are not gravitationally bound to them receding away. This is what we see in the Hubble Law. We infer that the Hubble law also holds true for all other galaxies.
Geocentric
Degeneracy
Flare
35. The gap etween saturn's A and B rings
MOONS: thickest atmosphere
Cassini division
Largest diameter
Electromagnetic Radiation: Infrared
36. An entity that is likely in the nucleus of most - if not all - galaxies.
Positive - Converge - Greater than 1
Precession
supermassive black hole
aphelion
37. N=are*Fp(Ne)(Fl)(Fi)(Fc)(L) N: number of civilizations possible to communicate with are*: rate solar-like stars are created Fp: fraction of stars with planets Ne: number of planets like ours Fl: fraction of planets with life Fi: intelligent life Fc:
Drake equation
Celestial Equator
opposition
Jupiters red spot
38. Galaxies whose nuclei emit jets of materil at high speeds. material comes from supermassive black holes
radio galaxy
conjunction
meteorite
cosmological principle
39. The layer of the sun just above the photosphere
open star clusters
Chromosphere
Eclipses of the Moons of Jupiter
Red Giant Branch Star
40. When material is heated and moves taking the heat energy with it
Flocculent spirals
Convection
Filament
plate tectonics
41. A bridge of material held in position above the solar surface. They can remain for hours even days
Prominence
MOONS: roundest shape
Sc spiral galaxy
Synodic Day
42. A bright area of higher temperature that often proceeds the formation of sunspots.
Nebula
planetary nebula
Synchrotron Rotation
Plague
43. Sulfurous volcanoes - pools of liquid sulfur - surface resembles cheese pizza ACTIVE SURFACE
reflection star clusters
Io (jupiters moon)
Molecular Clouds
Plague
44. When the Sun is farthest south of the celestial equator (About December 22)
blazar
If it is in a denser medium - such as glass - it will move slower
condensation temperature
Winter Solstice
45. Formed rapidly - collapsed slower into disk shape - star birth rate is low but lasts longer and ongoing - contain higher mass blue stars.
Planetary Nebula
Asymptotic giant Branch Star
shape and color of SPIRAL galaxies
Plank's Law
46. Saturn
Proton-proton chain
Liquid metallic hydrogen
least dense
Void
47. 10^2 nm 10^7 nm
Liquid metallic hydrogen
Electromagnetic Radiation: Gamma Ray
Inverse Square Law
Flare
48. The faint glow of light left over from the Big Bang. cosmic microwave background are the photons that remain after the big bang that have not turned into matter.
Radio Galaxy
CMB
Colestial Pole
Light-Year
49. A large and bright but cool star.
differential rotation
Sunspot cycle
Nucleus
Red Giant
50. Places in the asteroid belt - caused by resonance with Jupiter - where there are no asteroids
In an expanding universe all galaxies see all other galaxies that are not gravitationally bound to them receding away. This is what we see in the Hubble Law. We infer that the Hubble law also holds true for all other galaxies.
Kirkwood gaps
Cassini division
conjunction