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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. The entity from which the whole universe is postulated to have come from.
Geocentric
Seyfert galaxy
cosmic singularity
Ionization
2. Flat disk with gas - dust - H2 regions - molecular clouds - dust young stars and remnants of old planetary nebula and supernova remnants. stars spin together with similar velocities called differential rotation
Synchrotron Rotation
Limb darkening
critical density
disk
3. Ganymede
MOONS: largest size
Blackbody Curve
OB Associations
Gamma ray bursts
4. Theory virtually demands that the geometry of the universe be ______. Results of measuring lumps in the cosmic background radiation indicate that the universe geometry is ________.
Flat - Flat
Astronomical Unit
High Velocity Stars
Doppler Shift
5. A galaxy emitting large amounts of energy at long wavelengths.
greatest elongation
radio galaxy
nova
Magnification
6. The state of having a balance between inward and outard pressures in a gas--the inward force from gravity is balanced by the outward force from heat.
Ganymede (Jupiter)
Hydrostatic Equilibrium
planetary nebula
Ecliptic
7. 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.
open star clusters
Gravitational Lens
Cosmological Principle
Main Sequence
8. A crystalline patter found in iron meteorites
widmanstatten pattern
disk
Ammonia - methane - and water
fastest rotation
9. The dark - relativley smooth areas on the moon; Latin for sea
Sc spiral galaxy
retrograde motion
Maria
Energy Level
10. Venus
Roundest orbit
Apollo asteroids
difference between maria and highlands of the moon.
slowest rotation
11. Hot cells of gas that rise and fall in the hotosphere
Granules
Enke gap
Supercluster
Plank's Law
12. First accurately measured the speed of light in a vacuum
aurora
Ole Roemer
aphelion
self-propagating star formation
13. Ancient stream channels - flood planes - and sedimentary-type rock. Frozen water is found in the polar ice caps and in the soil.
fastest rotation
Biologicla life created the recycling of nitrogen - co2 - and the production of oxygen. Oxygen is heavier so the atmosphere held onto it easier than hydrogen and helium.
cosmological principle
evidence of water on mars
14. The trapping of heat by carbon dioxide or other gases in the Earth's atmosphere.
Total Eclipse
Focal Plane
Drake equation
greehouse effects
15. A small and dim but hot star.
Hyashi track
Secondary Mirror
White Dwarf
Light Gathering Power
16. The north-south line passing directly overhead through the zenith.
Convection
Meridian
Make up of the jovian planets
Electromagnetic Radiation: Gamma Ray
17. Moon in less than the angular diameter of the Sun.
Photon
Red Giant Branch Star
general star population
Annular Eclipse
18. Dark areas on the sun that are cooler than the surrounding photosphere
dark matter
gravity
Perihelion
Sunspots
19. Mercury and venus
Penumbra
fewest moons
Hubble constant
Blackbody
20. The oldest part of the Milky Way
weight
Halo
Differential Rotation
Ground State
21. A younger cluster of stars - found in the galaxy disk
cosmological principle
semimajor axis
Open Cluster
Precession
22. A particle of light.
Photon
Jovian Planets
Energy Level
evidence of water on mars
23. Formed rapidly - collapsed slower into disk shape - star birth rate is low but lasts longer and ongoing - contain higher mass blue stars.
Celestial Equator
solar nebula
contrast northern lowlands and the southern highlands of mars...
shape and color of SPIRAL galaxies
24. Radiation given off by electrons accelerating in a magnetic field
Absolute Magnitude
Synchrotron Rotation
meteor
regolith
25. A large and bright but cool star.
Stephen-Boltzman Law
A family of radiant energy- includes light
Red Giant
Make up of the terrestrial planets
26. A star that blows itself apart
MOONS: largest size
Largest diameter
Red Giant
Supernova (You can be my supernova girl)
27. The time when the universe cooled sufficiently for atoms to exist. radiation dominated= first 300000 years - THEN era of recombination turns into matter dominated for next.
Nebula
Supernova (You can be my supernova girl)
Electromagnetic Radiation: Radio
era of recombination
28. Ganymede and Titan
MOONS: larger than mercury
condensation temperature
Nowhere visible to us. If there are higher dimension then the center would be visible to someone who lives in one. If there are no higher dimensions then the center does not exist.
Electron
29. The shadow area behind the Earth or Moon where the Sun is completely obscured.
zone
meteor shower
Umbra
inferior planets
30. A representation of the changes in color and brightness of an evolving protostar.
Dark matter is located at center of clusters - pulling the cluster members into faster orbits--dark matter gravity keeps objects in galxies bound.
E=mc2
Hyashi track
Flocculent spirals
31. The 'edge' of the universe. Light beyond this has not reached us yet.
weight
partile horizon
plate tectonics
fewest moons
32. A term referring to Earth-like planets
neutrino
Oort Cloud
terrestrial planet
Spectroscopic parallax
33. Thick rigid crust - no longer has plate tectonics but still has convective hot spots that create earth-like volcanoes except that last for billions of years because of lack of tectonics.
Big Bang
tectonics of Mars
The Big Bang Theory
nucleus
34. Atmosphere blocks high energy wavelengths - atmosphere blurs optical radiation - atmosphere absorbs some radiation at all wavelengths even when it gets through.
CCD
Nowhere visible to us. If there are higher dimension then the center would be visible to someone who lives in one. If there are no higher dimensions then the center does not exist.
3 reasons we orbit satellites to observe universe
Parsec
35. A highly variable galaxy nucleus of which BL Lac is one. Their light is highly energetic and their spectra are featureless. (face on)
aurora
blazar
Focal Plane
semimajor axis
36. The 11 or 22 period on the sun durin which sunspots increase - decrease - change polarity - increase and decrease again.
Apparent Magnitude
Oort cloud
Sunspot cycle
mass
37. A measure of the seasonal shifting of a star's position against farther stars or galaxies. The closer the star - the greater is the angular distance it shifts. We use it to find distances to stars that are up to 1000 pc away.
Nebula
Focal Length
mapping the structure of Milky Way disk
Parallax
38. The crust of a meteorite caused by its entry into Earth's atmosphere
fusion crust
Void
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
SETI
39. A faint - remarkably uniform distribution of radiation in space
Cosmic Microwave Background
Neutron Star
Ammonia - methane - and water
thinnest atmosphere
40. After stars form they pump light energy into surrounding gas causing it to heat up and glow (H2=ionized hydrogen - H1= neutral hydrogen in molcular couds)
H2 Regions
E=mc2
2 Reasons Why there are Supermassive Black holes at the center of every Galaxy
Electromagnetic Radiation: Ultraviolet Light
41. A logarithmically scaled value for the measured brightness of a star.
Terrestrial Planets
Apparent Magnitude
synchrotron radiation
Flocculent spirals
42. The mix of pure photon energy that emerged at the start of the universe.
Focal Plane
difference between maria and highlands of the moon.
cosmic fireball
Roundest orbit
43. How is the Hubble Law consistent with an expanding universe?
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.
Supercluster
Chromosphere
Filament
44. An object that may remain after a star explodes
Neutron Star
CNO Cycle
Ganymede (Jupiter)
fusion crust
45. Saturn
Superior planets
Photon
least dense
general star population
46. An energetic event taking place in the early universe
disk
Gamma-ray Burst
Coronal Loop
isotropic
47. The rock that makes up the lunar highlands
Heliocentric
Biologicla life created the recycling of nitrogen - co2 - and the production of oxygen. Oxygen is heavier so the atmosphere held onto it easier than hydrogen and helium.
Chromosphere
anorthosite
48. A fusion process in which a carbon atom transmutes to oxygen and back - creating a helium atom in the process
homogeneous
CNO Cycle
Bok Globule
Spectroscopy
49. Matter that reveals itself only through its gravitational attraction.
Electromagnetic Radiation: Gamma Ray
Metals
retrograde motion
dark matter
50. Is there water on the moon?
era of recombination
Yes - frozen at the poles- remains protected from the suns rays
Interstellar Extinction
mare basalt