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. In Ptolemy's geocentric solar system - the large circle on which a planet's epicycle moved around the Earth.
Density Wave
deferent
epicycle
molecular clouds
2. The apparent magnitude a star would have if it were at a distance of 10 parsecs.
Absolute Magnitude
Thermal Equilibrium
Proton-proton chain
Kuiper belt
3. The movement of the Earth's crustal plates riding on top of the mantle.
Absorption Spectrum
interstellar dust
If it is in a denser medium - such as glass - it will move slower
plate tectonics
4. The crust of a meteorite caused by its entry into Earth's atmosphere
Coldest surface
matter dominated universe
asteroid
fusion crust
5. When one side of a body always faces the planet it revolves around
MOONS: larger than mercury
Largest diameter
synchronous rotation
If it is in a denser medium - such as glass - it will move slower
6. Highlands: rocks are made of lighter anorthosite (similar to old earth rocks) Maria: rocks made of heavy mare basalt (volcanic rock) everywhere else is loose regolith created by meteoric impact.
Chandrasekhar Limit
Emission Spectrum
Big Crunch
difference between maria and highlands of the moon.
7. Milky way galaxy is a member - a small poor cluster-about 30 galaxies
The Local Group
Continuous Spectrum
radiation dominated universe
Thermal Equilibrium
8. The law that syas light energy from a blackbody increases as (temperature^4)
Nucleus
HII Region
neutrino
Stephen-Boltzman Law
9. A phenomenon seen when the Earth passes through the orbit of a burned out comet
matter dominated universe
It does not have to expand into anything. It might just be that the 3 dimensions of space are getting bigger. It may also be that our 3 spatial dimensions are expanding into higher dimensions if such things exist.
meteor shower
Hipparchus
10. The mirror that gathers the light in a reflector
Extrasolar Planet
Primary Mirror
Filament
Jupiters red spot
11. The area behind a lens where images are resolved
Focal Plane
regolith
Seyfert galaxy
Filament
12. Venus
Make up of the terrestrial planets
Cosmological Principle
Roundest orbit
E=mc2
13. The oldest part of the Milky Way
Halo
chondrite
Olber's paradox
Refractor
14. A push or a pull
coma
Terrestrial Planets
force
mare basalt
15. Venus
meteorite
Thickest atmosphere
radiation pressure
Radiative Diffusion
16. Small moons that maintain the shape of rings around Saturn and Uranus
direct motion
Shepherd satellite
contrast northern lowlands and the southern highlands of mars...
Coronal Loop
17. Poitns of gravitational stability in the orbit of a planet
Lagrangian Razor
Jupiters red spot
Colestial Pole
critical density
18. A spectrum of light with energy at only a few wavelengths.
High Velocity Stars
Emission Spectrum
Electromagnetic Radiation: Radio
Annular Eclipse
19. The assumption that the universe is isotropic (same in all directions) and homogeneous (Same everywhere throughout)
weight
cosmological principle
Nucleus
Refractor
20. A repeated - periodic push or pull capable of summing into a larger push or pull
Gamma-ray Burst
Halo
resonance
Flat - Flat
21. The distance light travels in one year (=9.46x10^12km).
radio galaxy
molecular clouds
Light-Year
Synchrotron Rotation
22. The elementary building blocks from which protons and neutrons are formed.
conjunction
Vernal Equinox
quarks
Summer Solstice
23. The ratio of the actual density of the universe to the critical density. (actual density divided by the critical density
Precession
Molecular Clouds
accretion disk
density parameter
24. Extends to a distance of 50000AU. Same objects as in the Kuiper belt-when they fall in toward the sun they become comets. Debris from comets hitting the Earths atmosphere cause meteor showers.
Spectral Lines
slowest rotation
Kuiper belt
Oort Cloud
25. A representation of the changes in color and brightness of an evolving protostar.
differential rotation
CNO Cycle
meteorite
Hyashi track
26. Half of the longest diameter across an ellipse
Synchrotron Rotation
Celestial Sphere
Granules
semimajor axis
27. Relativity predicts that nothing can travel faster than the speed of light in a vacuum - How can it move slower?
If it is in a denser medium - such as glass - it will move slower
critical density
Penumbra
anorthosite
28. Radiation given off by electrons accelerating in a magnetic field
force
Synchrotron Rotation
Radiative Diffusion
Sidereal Day
29. 1μm 100 nm
Sc spiral galaxy
Focal Plane
Electromagnetic Radiation: Visible Light
neutrino
30. 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:
planetary nebula
Drake equation
Ole Roemer
Dark matter is located at center of clusters - pulling the cluster members into faster orbits--dark matter gravity keeps objects in galxies bound.
31. Cold aggregates of gas - large and contain a huge amount of matter - so cold that molecules stick together to form molecules.
Metals
molecular clouds
Lagrangian Razor
Triple Alpha rocess
32. Disk dust grains are made of all the elements that are not in gaseous form in space which blocks starlight and causes interstellar extinction
interstellar dust
Rich vs poor clusters
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
Parallax
33. The organization of clusters of galaxies into sheets and strings
Flare
Supercluster
Cepheid Variable
Planck time
34. The layer of the sun just above the photosphere
Earth resurfaces itself due to erosion and plate tectonics - while the moon has neither.
300000 KM/sec
Chromosphere
Parsec
35. Originially thought to be stars emitting radio radiation but are now concluded to be nuclei of distant galaxies (same as radio galaxies aka emit streams of material)
tectonics of Venus
acceleration
Steady State Theory (Leads to Olber's Paradox)
quasar
36. A large and bright but cool star.
Red Giant
contrast northern lowlands and the southern highlands of mars...
Dark Matter
Cepheid Variable
37. Europa
Density Wave
MOONS: roundest shape
Halo
mass
38. Massive compact halo objects (MACHO) - weakly interacting massive particles (WIMPY's)
Electromagnetic Radiation
Hydrostatic Equilibrium
Dark matter candidates
rotation curve=winding dilemma?
39. An efficient - two-dimensional electronic light detector. Common in digital cameras - they revolutionized astronomical imaging
CCD
OB Associations
Electromagnetic Radiation: Gamma Ray
Dark Matter
40. A star fusing hydrogen to helium in it's core
direct motion
Main Sequence Stars
Steady State Theory (Leads to Olber's Paradox)
Gravitational Lens
41. 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
Hubble law
Extrasolar Planet
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.
Electromagnetic Radiation: Infrared
42. The apparent path of the Sun through the stars on the celestial sphere.
most moons
Electromagnetic Radiation: Gamma Ray
Nucleus
Ecliptic
43. A word used in astronomy to describe all elements besides hydrogen and helium
Metals
fewest moons
highlands
Color Index
44. When the Sun is farthest north of the celestial equator (about June 22)
Summer Solstice
Planetary Nebula
general star population
accretion disk
45. A planet orbiting about a distant star
Extrasolar Planet
Maria
Negative - Diverge - Less than 1
dark matter
46. Hydrogen and helium (mainly)
weight
Make up of the jovian planets
Hyashi track
Dwarf planets
47. An element of a highly efficient - two-dimensional electronic light detector
meteoriod
Cosmological Principle
Pixel
Doppler Shift
48. A collection of comets in the plane of the solar system - located beyond the orbit of Pluto
Penumbra
Shepherd satellite
Kuiper belt
protostar
49. When the Moon entirely blocks the Sun.
Perihelion
mapping the structure of Milky Way disk
Triple Alpha rocess
Total Eclipse
50. Large bulge - tightly wound spiral arms - relatively few h2 regions and are smooth
Dark Matter
Sa spiral galaxy
Geocentric
Refractor
Sorry!:) No result found.
Can you answer 50 questions in 15 minutes?
Let me suggest you:
Browse all subjects
Browse all tests
Most popular tests
Major Subjects
Tests & Exams
AP
CLEP
DSST
GRE
SAT
GMAT
Certifications
CISSP go to https://www.isc2.org/
PMP
ITIL
RHCE
MCTS
More...
IT Skills
Android Programming
Data Modeling
Objective C Programming
Basic Python Programming
Adobe Illustrator
More...
Business Skills
Advertising Techniques
Business Accounting Basics
Business Strategy
Human Resource Management
Marketing Basics
More...
Soft Skills
Body Language
People Skills
Public Speaking
Persuasion
Job Hunting And Resumes
More...
Vocabulary
GRE Vocab
SAT Vocab
TOEFL Essential Vocab
Basic English Words For All
Global Words You Should Know
Business English
More...
Languages
AP German Vocab
AP Latin Vocab
SAT Subject Test: French
Italian Survival
Norwegian Survival
More...
Engineering
Audio Engineering
Computer Science Engineering
Aerospace Engineering
Chemical Engineering
Structural Engineering
More...
Health Sciences
Basic Nursing Skills
Health Science Language Fundamentals
Veterinary Technology Medical Language
Cardiology
Clinical Surgery
More...
English
Grammar Fundamentals
Literary And Rhetorical Vocab
Elements Of Style Vocab
Introduction To English Major
Complete Advanced Sentences
Literature
Homonyms
More...
Math
Algebra Formulas
Basic Arithmetic: Measurements
Metric Conversions
Geometric Properties
Important Math Facts
Number Sense Vocab
Business Math
More...
Other Major Subjects
Science
Economics
History
Law
Performing-arts
Cooking
Logic & Reasoning
Trivia
Browse all subjects
Browse all tests
Most popular tests