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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. A continuous spectrum of light missing energy at a few wave lengths.
Extrasolar Planet
plate tectonics
Absorption Spectrum
Red Giant Branch Star
2. The elementary building blocks from which protons and neutrons are formed.
Blackbody Curve
quarks
Halo
Io (jupiters moon)
3. Is there water on the moon?
Yes - frozen at the poles- remains protected from the suns rays
Grand design spirals
Electromagnetic Radiation: Microwave
gravity
4. Stars orvits do not define the spiral patterns - instead they are density waves that move at slower speeds (arms are defined by young O and B stars and gas clouds)
Resolving Power
asteroid
highlands
How is winding dilemma solved?
5. A crystalline patter found in iron meteorites
widmanstatten pattern
Spectroscopy
mare basalt
Main Sequence Stars
6. Matter so dense that even light cannot escape its gravity
Black Hole
gravity
supernova
Thermal Equilibrium
7. The organized effort to find life elsewhere in the universe. (Search for Extra-Terrestrial Intelligence)
SETI
Sa spiral galaxy
Big Crunch
Sc spiral galaxy
8. Hydrogen and helium (mainly)
Rich vs poor clusters
Make up of the jovian planets
Wein's Law
semimajor axis
9. A crystalline patter found in iron meteorites
Yes - frozen at the poles- remains protected from the suns rays
Oort cloud
widmanstatten pattern
Celestial Sphere
10. Venus (retrograde)
slowest rotation
Bulge
HII Region
bulge
11. The Big Bang says that the universe has not existed forever. It had a distinct beginning about 14 billion years ago called the 'Big Bang'. Therefore light from any object more than 14 billion light years away has not had time to reach us. The other p
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12. A small spherical dark nebula
Bok Globule
Energy Level
Light: travels like a wave - detected like a particle
Positive - Converge - Greater than 1
13. The relation that tells how light dims with distance.
Sb spiral galaxy
Maria
Sunspot cycle
Inverse Square Law
14. When the Sun is farthest north of the celestial equator (about June 22)
planetary nebula
Summer Solstice
density
Filament
15. The instant of time after the Big Bang when space and time obtained their characteristics. (t=10^-43 sec when gravity freezes out-instant when gravity started existing as a separate force)
Bulge
hottest surface
Drake equation
Planck time
16. Dark - reddish - low-pressure bands in Jupiter's atmosphere
Open Cluster
Dark matter is located at center of clusters - pulling the cluster members into faster orbits--dark matter gravity keeps objects in galxies bound.
Plague
belt
17. All wavelengths of light emitted by a blackbody.
Precession
Plank's Law
nova
Blackbody Curve
18. The part of the Milky way that has on-going star formation
Celestial Equator
Jovian Planets
Disk
resonance
19. All possible types of energy that can be emitted and absorbed by atoms.
If it is in a denser medium - such as glass - it will move slower
Electromagnetic Radiation
Light-Year
Io (jupiters moon)
20. The rotation of a star or planet at different speeds at its equator and poles
Enke gap
gravity
differential rotation
smallest diameter
21. Largest moon in solar system - two differenet types of terrain - darker terrain is older - NOT ACTIVE SURFACE
Ganymede (Jupiter)
Nebula
radio lobe
MOONS: roundest shape
22. The study of the universe as a whole.
weight
molecular clouds
slowest rotation
cosmology
23. The measure of a variable star's apparent magnitude as it brightens and dims with time
Halo
Light Curve
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.
24. The sinking of denser elements to the center of a young molten planet
Dark matter is located at center of clusters - pulling the cluster members into faster orbits--dark matter gravity keeps objects in galxies bound.
Kuiper belt
chemical differentiation
Electromagnetic Radiation: X-Ray
25. Small bulges - loosely wound - massive arms - arms have many H2 regions and look very lumpy
MOONS: larger than mercury
High Velocity Stars
Sc spiral galaxy
The Local Group
26. 30AU to 50Au from sun - consists of ancietn premordial objects made of frozen ice and dust-35000 objects or more that are larger than 100 km in diameter and many more smaller than this
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.
greehouse effects
Terrestrial Planets
Kuiper belt
27. The mirror that gathers the light in a reflector
Primary Mirror
self-propagating star formation
weight
Europa (Jupiters moon)
28. What is the universe expanding into?
solar nebula
Filament
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.
Bulge
29. What are the three possible geometries of the universe?
Electromagnetic Radiation: Radio
Brown dwarf
Open - flat - and closed.
Winter Solstice
30. A star that erratically and explosively brightens and dims
Nova
mare basalt
semimajor axis
Focal Length
31. The class of all objects having high energy radiation coming from their nuclei. Active Galactic Nucleus- Blazars - Quasars - Radio and Emit synchrotron radiation
AGN
Reflector
Neutron Star
Heliocentric
32. Any class of objects with a uniform luminosity used to determine distance.
standard candle
Ecliptic
Apollo asteroids
Europa (Jupiters moon)
33. A particle of light
blazar
radio lobe
Photon
contrast northern lowlands and the southern highlands of mars...
34. 1μm 100 nm
plate tectonics
Winter Solstice
Electromagnetic Radiation
Electromagnetic Radiation: Visible Light
35. When the Moon entirely blocks the Sun.
general star population
Absorption Spectrum
Jupiters red spot
Total Eclipse
36. The seasonal shifting of a nearby star's position relative to more distant objects.
Halo
3 reasons we orbit satellites to observe universe
Parallax
Resolving Power
37. A huge sphere of tenuous gas surrounding the nucleus of a comet
reflection star clusters
Hubble law
Energy Level
coma
38. A force exerted by reflecting sunlight
Bulge
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.
supernova
radiation pressure
39. The location of a supermassive black hole
supernova
Spectral Lines
greatest elongation
Nucleus
40. What causes the zones and belts on jupiter and saturn?
OB Associations
Negative - Diverge - Less than 1
High and low pressure which stretch into bands due to the rapid differential rotation. deeper - darker colors are in the belts and zones are lighter
Flocculent spirals
41. 100 nm 10 nm
nucleus
neutrino
Celestial Equator
Electromagnetic Radiation: Ultraviolet Light
42. 1 mm 1μm
300000 KM/sec
Planck time
Bok Globule
Electromagnetic Radiation: Infrared
43. A logarithmically scaled value for the measured brightness of a star.
Main Sequence Stars
great dark spots
The Local Group
Apparent Magnitude
44. A representation of the changes in color and brightness of an evolving protostar.
Brown dwarf
Hyashi track
Coldest surface
Electromagnetic Radiation: Microwave
45. The rate of expansion of the universe.
Inverse Square Law
cosmological principle
Negative - Diverge - Less than 1
Hubble constant
46. Europa
Olber's paradox
anorthosite
MOONS: roundest shape
Limb darkening
47. A faint - remarkably uniform distribution of radiation in space
Cosmic Microwave Background
Apollo asteroids
Dark matter is located at center of clusters - pulling the cluster members into faster orbits--dark matter gravity keeps objects in galxies bound.
Corona
48. A prominence seen against the disk of the sun
Sa spiral galaxy
Filament
quasar
Electron
49. A very distant - star-like object with huge - broad emission lines. Probably the nucleus of a distant active galaxy.
quasar
Liquid metallic hydrogen
Olber's paradox
scarp
50. Light scattered through the atmosphere that degrades astronomical images
Parallax
critical density
acceleration
Light Pollution