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. A star that has become a red giant for the second and final time. It is burning helium to carbon in a shell surrounding the core
differential rotation
Make up of the jovian planets
Asymptotic giant Branch Star
Apparent Magnitude
2. An important quality of telescopes that increases as the square of the primary mirror or objective lens
Seyfert galaxy
Sa spiral galaxy
Light Gathering Power
Photosphere
3. The lens in a telescope used to determine the magnification
Ole Roemer
Eyepiece Lens
Galilean satellite
Thermal Equilibrium
4. Mercury
Ionization
most eccentric orbit
Hyashi track
Molecular Clouds
5. 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.
Electron
Turn off Point
solar nebula
self-propagating star formation
6. The Big Bang was not an explosion of matter into empty space - like the explosion of a bomb. Instead - it was an emergence of space and time filled with pure energy where before none of this was present. The point from which is emerged is called the
Kirchhoff's Law
The Big Bang Theory
Supercluster
planetary nebula
7. Any change in the speed or direction of an object's motion
acceleration
bulge
comet
Trojan asteroids
8. Form honeycomb like patterns surrounding empty or nearly empty voids.
fusion crust
Globular Cluster
The Local Group
superclusters
9. The mass of an object divided by its volume
density
greehouse effects
Plague
greehouse effects
10. Orbit in Jupiters orbit
Sidereal Day
Open Cluster
isotropic
Trojan asteroids
11. The lowest energy of an atom.
Trojan asteroids
Hipparchus
quarks
Ground State
12. A measure of the ability of a telescope to see fine detail
Resolving Power
Instability strip
Light Pollution
Open Cluster
13. A star without enough mass to begin hydrogen fusion
Brown dwarf
Prominence
Doppler Shift
Main Sequence
14. The force of attraction between any two objects having mass
Electromagnetic Radiation: X-Ray
Corona
gravity
interstellar dust
15. The particle horizon is the farthest we can see. It exists because the universe had a beginning and thus a definite age. Light from distances farther away from the particle horizon have not had time to reach us yet.
great dark spots
Particle Horizon
Callisto (Jupiter)
Apparent Magnitude
16. Either Io -Europa - Ganymede - or Callisto
MOONS: roundest shape
H2 Regions
Galilean satellite
semimajor axis
17. The oldest terrain on the moon
Interstellar Extinction
Hipparchus
highlands
Population 1 vs Population 2 stars
18. The mirror that gathers the light in a reflector
Eclipses of the Moons of Jupiter
Primary Mirror
Rich Cluster
Electromagnetic Radiation: Radio
19. Sulfurous volcanoes - pools of liquid sulfur - surface resembles cheese pizza ACTIVE SURFACE
Positive - Converge - Greater than 1
Seyfert galaxy
Density Wave
Io (jupiters moon)
20. The mass of an object divided by its volume
Electromagnetic Radiation: Ultraviolet Light
Trojan asteroids
meteor
density
21. Material that shoots rapidly out into space. Flares cause Auroras
Spectroscopic parallax
Plank's Law
Flare
highlands
22. The lens in a telescope used to determine the magnification
nova
Eyepiece Lens
meteoriod
Make up of the jovian planets
23. A small and dim but hot star.
cosmic fireball
CCD
Ecliptic
White Dwarf
24. Dark - reddish - low-pressure bands in Jupiter's atmosphere
belt
Bok Globule
density waves
H2 Regions
25. A crystalline patter found in iron meteorites
Trojan asteroids
Particle Horizon
bulge
widmanstatten pattern
26. The source of the force that is accelerating the expansion rate of the universe.
dark energy
Parallax
Radiative Diffusion
Sc spiral galaxy
27. Poitns of gravitational stability in the orbit of a planet
accretion disk
Lagrangian Razor
Light Curve
Thermonuclear Fusion
28. A collection of galaxies like the one the Milky Way belongs to
Poor Cluster
coma
Granules
Supernova (You can be my supernova girl)
29. Light scattered through the atmosphere that degrades astronomical images
interstellar dust
Big Bang
Light Pollution
chemical differentiation
30. The location of a supermassive black hole
nova
Nucleus
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.
cosmic fireball
31. Small bulges - loosely wound - massive arms - arms have many H2 regions and look very lumpy
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.
Sc spiral galaxy
Main Sequence
Ground State
32. Sc galaxies
Chromosphere
Seeing
Eclipses of the Moons of Jupiter
Flocculent spirals
33. Ancient stream channels - flood planes - and sedimentary-type rock. Frozen water is found in the polar ice caps and in the soil.
Cosmic Microwave Background
evidence of water on mars
hottest surface
Dark matter is located at center of clusters - pulling the cluster members into faster orbits--dark matter gravity keeps objects in galxies bound.
34. Collections of young - hot stars
fewest moons
tectonics of Venus
OB Associations
widmanstatten pattern
35. Matter that reveals itself only through its gravitational attraction.
dark matter
Winter Solstice
density waves
Make up of the terrestrial planets
36. The assumption that the universe is isotropic (same in all directions) and homogeneous (Same everywhere throughout)
Seyfert galaxy
E=mc2
If it is in a denser medium - such as glass - it will move slower
cosmological principle
37. Extremely round - lots of liquid water - ice rafts on surface ACTIVE SURFACE
Europa (Jupiters moon)
gravity
Light Gathering Power
Kirchhoff's Law
38. The final end state of an intermediate to high mass star. An entity in which all the electrons have been pushed into the protons.
MOONS: most geologically active
How is winding dilemma solved?
Refractor
Neutron Star
39. Infinitely long -> 10 cm
Instability strip
Electromagnetic Radiation: Radio
Roundest orbit
Yes - frozen at the poles- remains protected from the suns rays
40. An empirical scheme for predictin ghe orbital distances of planets
radio galaxy
cosmic singularity
Pulsar
Titus-Bode Law
41. 1 mm 1μm
CNO Cycle
aurora
Electromagnetic Radiation: Infrared
Reflector
42. 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
disk
Thickest atmosphere
condensation temperature
Kirchhoff's Law
43. A subatomic particle with a negative charge. It creates light.
thinnest atmosphere
terrestrial planet
Cassini division
Electron
44. The slow wobble of the Earth on its rotation axis.
Make up of the terrestrial planets
mapping the structure of Milky Way disk
Flocculent spirals
Precession
45. Matter that reveals itself only through its gravitational attraction
Dark Matter
Hipparchus
Supernova (You can be my supernova girl)
Flare
46. When the Sun is farthest north of the celestial equator (about June 22)
Summer Solstice
greehouse effects
CMB
Light Curve
47. Stars fromt he Halo that have drifted into the disk. as earth zooms past them in a faster orbit they appear to be going backward very fast
era of recombination
quarks
High Velocity Stars
contrast northern lowlands and the southern highlands of mars...
48. Approximate speed of light in a vacuum
300000 KM/sec
Bok Globule
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
Pulsar
49. Distribution of dust (tells us disk is thin) - find distances to O&B stars and H2 regions (arms are sights of star formation and OB stars live and die at location of birth) -Milky way has four arms. Sun is in spur apart from arms.
Open Cluster
mapping the structure of Milky Way disk
Brown dwarf
Sunspot cycle
50. The final end state of a high mass star. .An entity for which gravity has completely overwhelmed all other forces of nature.
Black Hole
Oort Cloud
Pixel
Spectroscopy