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. The 11 or 22 period on the sun durin which sunspots increase - decrease - change polarity - increase and decrease again.
Sunspot cycle
roche limit
300000 KM/sec
asteroid
2. Radiation given off by electrons accelerating in a magnetic field
supernova
greatest elongation
Oort cloud
Synchrotron Rotation
3. The oldest part of the Milky Way
chondrite
difference between maria and highlands of the moon.
Halo
Photon
4. Saturn
least dense
Cepheid variables
shape and color of ELLIPTICAL galaxies
isotropic
5. The organization of clusters of galaxies into sheets and strings
Electromagnetic Radiation: Infrared
300000 KM/sec
Supercluster
difference between maria and highlands of the moon.
6. A volume of space where few - if any - galaxies are located
density waves
Void
comet
Black Hole
7. Mercury - Venus - Earth - Mars
Terrestrial Planets
Color Index
Halo
The Local Group
8. Jupiter
Largest diameter
Electromagnetic Radiation: Infrared
Negative - Diverge - Less than 1
Hyashi track
9. A bright area of higher temperature that often proceeds the formation of sunspots.
Jovian Planets
Celestial Equator
contrast northern lowlands and the southern highlands of mars...
Plague
10. When particles are compressed to an unnatural state where their pressure is not related to their temperature
Degeneracy
Plank's Law
shape and color of ELLIPTICAL galaxies
accretion disk
11. A technique using computer-controlled mirrors to sharpen images distorted by the atmosphere
reflection star clusters
roche limit
Granules
Active Optics
12. The location of a supermassive black hole
Nucleus
Superior planets
The Local Group
Brown dwarf
13. When massive objects bend space and time enough to create multiple images of an object located behind them
Gravitational Lens
Ground State
Earth resurfaces itself due to erosion and plate tectonics - while the moon has neither.
hottest surface
14. The mix of pure photon energy that emerged at the start of the universe.
H2 Regions
shape and color of ELLIPTICAL galaxies
cosmic fireball
tectonics of Venus
15. Half of the longest diameter across an ellipse
shape and color of SPIRAL galaxies
H-are Diagram
Parallax
semimajor axis
16. Norhern lowlands- darker in color and have far fewer craters as if an ancient sea or ice field covered them. southern highlands- much higher in density of craters.
Penumbra
contrast northern lowlands and the southern highlands of mars...
roche limit
Globular Cluster
17. A small spherical dark nebula
Zenith
Seeing
Yes - frozen at the poles- remains protected from the suns rays
Bok Globule
18. The organized effort to find life elsewhere in the universe. (Search for Extra-Terrestrial Intelligence)
planetesimal
SETI
radiation pressure
Positive - Converge - Greater than 1
19. Small bulges - loosely wound - massive arms - arms have many H2 regions and look very lumpy
Chromosphere
critical density
Drake equation
Sc spiral galaxy
20. The shadow area behind the Earth or Moon where the Sun is completely obscured.
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
Umbra
Gamma-ray Burst
disk
21. Long - meandering cliff formed when a planet surface cools and shrinks
Parallax
Population 1 vs Population 2 stars
scarp
Convection
22. A very dense - highly populated cluster of galaxies
Rich Cluster
matter dominated universe
Photometry
Density Wave
23. The final end state of an intermediate to high mass star. An entity in which all the electrons have been pushed into the protons.
Energy Level
regolith
Neutron Star
Negative - Diverge - Less than 1
24. 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)
accretion
Gravitational Lens
H2 Regions
Heliocentric
25. The telescope configuration that has the focus placed at the back of the primary mirror
Cosmic Microwave Background (CMB)
thinnest atmosphere
Sc spiral galaxy
Cassegrain Focus
26. The oldest terrain on the moon
highlands
Focal Plane
jovian
Titus-Bode Law
27. 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
tectonics of Earth
Shepherd satellite
Kuiper belt
era of recombination
28. Extremely round - lots of liquid water - ice rafts on surface ACTIVE SURFACE
Europa (Jupiters moon)
White Dwarf
AGN
CMB
29. Largest moon in solar system - two differenet types of terrain - darker terrain is older - NOT ACTIVE SURFACE
MOONS: roundest shape
Ganymede (Jupiter)
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
300000 KM/sec
30. How did Earth come to have an oxygen rich atmosphere?
Self-Propogating Star Formation
Neutron Star
Refractor
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.
31. How is the Hubble Law consistent with an expanding universe?
Dark Nebula
radiation pressure
Celestial Equator
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.
32. A star that is in the process of forming. It glows from gravitational contraction
Ammonia - methane - and water
Callisto (Jupiter)
protostar
rotation curve = dark matter?
33. The force of attraction between any two objects having mass
era of recombination
regolith
gravity
quarks
34. The powdered stone fragments that make up the lunar 'soil'
greehouse effects
Primary Mirror
Callisto (Jupiter)
regolith
35. The sinking of denser elements to the center of a young molten planet
meteor shower
Most dense
Spectroscopic parallax
chemical differentiation
36. A word used in astronomy to describe all elements besides hydrogen and helium
Io (jupiters moon)
Metals
highlands
Radio Galaxy
37. Sulfurous volcanoes - pools of liquid sulfur - surface resembles cheese pizza ACTIVE SURFACE
Io (jupiters moon)
anorthosite
Total Eclipse
Black Hole
38. Material that shoots rapidly out into space. Flares cause Auroras
Bok Globule
coma
Flare
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.
39. A change in the appearance of the sun at the edge of the solar disk
Galilean satellite
Umbra
quasar
Limb darkening
40. The most mass a white dwarf can have before collapsing to a neutron star
Chandrasekhar Limit
We don't know. It might be but does not have to be.
Absolute Magnitude
Active Optics
41. Matter that reveals itself only through its gravitational attraction
Chandrasekhar Limit
Dark Matter
Make up of the jovian planets
High Velocity Stars
42. Light-colored high-pressure bands in Jupiter's atmosphere
chemical differentiation
zone
Titus-Bode Law
MOONS: largest size
43. A location on an H-are Diagram where evolving stars pulsate
open star clusters
Colestial Pole
Instability strip
Sb spiral galaxy
44. An energetic event taking place in the early universe
CNO Cycle
scarp
Gamma-ray Burst
hottest surface
45. The lens in a telescope used to determine the magnification
Degeneracy
Eyepiece Lens
chemical differentiation
White Dwarf
46. A telescope that uses mirrors to focus light
Reflector
hottest surface
Apparent Magnitude
Limb darkening
47. Collections of young - hot stars
Electromagnetic Radiation: X-Ray
great red spot
Ole Roemer
OB Associations
48. A small chunk of rock in space
Heliocentric
shape and color of SPIRAL galaxies
meteoriod
Neutron Star
49. 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.
radiation pressure
tectonics of Mars
chondrite
2 Reasons Why there are Supermassive Black holes at the center of every Galaxy
50. The high- temperatature outer layer of the sun
Corona
Hubble constant
Sunspot cycle
Umbra