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 powdered stone fragments that make up the lunar 'soil'
Hipparchus
Globular Cluster
regolith
Negative - Diverge - Less than 1
2. Mercury and venus
hottest surface
Light Curve
Occam's razor
fewest moons
3. Large bulge - tightly wound spiral arms - relatively few h2 regions and are smooth
Sa spiral galaxy
Atomic Number
Turn off Point
terrestrial planet
4. A streak of light in the atmosphere
Cosmological Principle
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.
meteor
Plank's Law
5. Small bulges - loosely wound - massive arms - arms have many H2 regions and look very lumpy
Sc spiral galaxy
Reflector
Secondary Mirror
Ionization
6. Earth
thinnest atmosphere
MOONS: largest size
Big Crunch
Most dense
7. The surface of the sun
Photosphere
conjunction
Horizontal Branch Star
Parallax
8. Saturn
hottest surface
High Velocity Stars
least dense
Chandrasekhar Limit
9. The shadow area behind the Earth or Moon where the Sun is completely obscured.
Umbra
Eclipses of the Moons of Jupiter
smallest diameter
Coronal Loop
10. A point in the sky where meteors appear to come from during a shower
radiant
Earth resurfaces itself due to erosion and plate tectonics - while the moon has neither.
Light Gathering Power
Grand design spirals
11. A force exerted by reflecting sunlight
Grand design spirals
Focal Plane
radiation pressure
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.
12. 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.
Electromagnetic Radiation: Infrared
Oort Cloud
Magnification
synchronous rotation
13. The study of the universe as a whole.
aphelion
cosmology
Big Bang
highlands
14. When massive objects bend space and time enough to create multiple images of an object located behind them
Gravitational Lens
Celestial Sphere
Light Curve
Atomic Number
15. A rock or iron specimen that has fallen from space
Electromagnetic Radiation: Ultraviolet Light
meteorite
widmanstatten pattern
Doppler Shift
16. A bright area of higher temperature that often proceeds the formation of sunspots.
Total Eclipse
Largest diameter
Plague
Jupiters red spot
17. The organization of clusters of galaxies into sheets and strings
chemical differentiation
Supercluster
Horizontal Branch Star
Photon
18. The entity responsible for spiral arms in grand-design spiral galaxies
Poor Cluster
density
Density Wave
Void
19. Very center of galaxy. suggestion of a black hole
Electromagnetic Radiation
Thermonuclear Fusion
Sunspot cycle
nucleus
20. A telescope that uses mirrors to focus light
Light Curve
H-are Diagram
Cosmic Microwave Background
Reflector
21. 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.
difference between maria and highlands of the moon.
Coronal Loop
accretion
rotation curve=winding dilemma?
22. The movement of the Earth's crustal plates riding on top of the mantle.
plate tectonics
Umbra
Largest diameter
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
23. The imaginary sphere centered on the Earth that hols the stars.
Astronomical Unit
most eccentric orbit
Vernal Equinox
Celestial Sphere
24. The apparent magnitude a star would have if it were at a distance of 10 parsecs.
Photon
Pulsar
acceleration
Absolute Magnitude
25. The wavelengths where a specific element can absorb or emit light.
chemical differentiation
Cosmic Microwave Background (CMB)
Cosmic Microwave Background
Spectral Lines
26. Sulfurous volcanoes - pools of liquid sulfur - surface resembles cheese pizza ACTIVE SURFACE
Open - flat - and closed.
Red Giant Branch Star
Io (jupiters moon)
MOONS: roundest shape
27. A telescope that uses lenses to focus light
Enke gap
Refractor
Apparent Magnitude
Turn off Point
28. Finding a star's absolute magnitude from it's placement on an HR diagram. After finding the absolute magnitude - we measure the apparent magnitude - for a distance modulus and use this to find the distance. This method is good for finding distances t
Spectroscopic parallax
Interstellar Extinction
Magnification
terrestrial planet
29. 10 cm -> 1 mm
Electromagnetic Radiation: Microwave
Absorption Spectrum
Seeing
Lagrangian Razor
30. The rock that makes up the lunar highlands
anorthosite
Stephen-Boltzman Law
HII Region
open star clusters
31. 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.
Color Index
plate tectonics
Atomic Number
Hydrostatic Equilibrium
32. The point where a superior planet is as far away from the sun as it can be (as seen from the Earth)
dark energy
opposition
Neutron Star
Chandrasekhar Limit
33. The science of measuring light energy by wavelength.
MOONS: thickest atmosphere
Oort Cloud
meteoriod
Spectroscopy
34. Young clusters in disk are irregularly shaped since they have no time to relax into the rounder relaxed shape of globular clusters-will constantly be torn apart and assimilated.
Vernal Equinox
Neutron Star
open star clusters
quasar
35. Europa
synchronous rotation
Kirkwood gaps
MOONS: roundest shape
mass
36. A galaxy emitting large amounts of energy at long wavelengths.
radio galaxy
open star clusters
Interstellar Extinction
retrograde motion
37. Infinitely long -> 10 cm
Electromagnetic Radiation: Radio
Autumnal Equinox
300000 KM/sec
Celestial Sphere
38. The process of acquiring material
smallest diameter
accretion
Vernal Equinox
density parameter
39. An empirical scheme for predictin ghe orbital distances of planets
Titus-Bode Law
Electromagnetic Radiation
Main Sequence
Limb darkening
40. A bridge of material held in position above the solar surface. They can remain for hours even days
Prominence
supernova
jovian
Flare
41. The material from which the solar system formed
Hyashi track
Blackbody
density
solar nebula
42. Is there water on the moon?
Thermal Equilibrium
The Big Bang Theory resolves Olber's Paradox
Yes - frozen at the poles- remains protected from the suns rays
Triple Alpha rocess
43. The science of measuring light energy by wavelength.
Callisto (Jupiter)
Spectroscopy
Population 1 vs Population 2 stars
Photometry
44. When material is heated and moves taking the heat energy with it
Wein's Law
Red Giant
great red spot
Convection
45. Mercury
Vernal Equinox
cosmic singularity
Positive - Converge - Greater than 1
smallest diameter
46. The point directly overhead.
Zenith
Cosmic Microwave Background (CMB)
Precession
Particle Horizon
47. The light produced when particles from the sun collide with atmospheric molecules
aurora
dark matter
Neutron Star
Electromagnetic Radiation: Radio
48. The high- temperatature outer layer of the sun
Corona
Electromagnetic Radiation: Radio
deferent
Kuiper belt
49. The part of the Milky way that has on-going star formation
Flat - Flat
Disk
300000 KM/sec
era of recombination
50. The trapping of heat by carbon dioxide or other gases in the Earth's atmosphere.
Spectroscopy
greehouse effects
Emission Spectrum
chondrite