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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. The relation that tells how light dims with distance.
Inverse Square Law
Electromagnetic Radiation: Ultraviolet Light
gravity
great red spot
2. A term referring to Earth-like planets
terrestrial planet
Secondary Mirror
Colestial Pole
Lagrangian Razor
3. A telescope that uses lenses to focus light
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.
comet
Electromagnetic Radiation: Ultraviolet Light
Refractor
4. The source of the force that is accelerating the expansion rate of the universe.
retrograde motion
Electromagnetic Radiation: Visible Light
dark energy
Radio Galaxy
5. Approximate speed of light in a vacuum
dark energy
Thermonuclear Fusion
300000 KM/sec
Parallax
6. A phenomenon seen when the Earth passes through the orbit of a burned out comet
general star population
coma
meteor shower
Ecliptic
7. The powdered stone fragments that make up the lunar 'soil'
Ganymede (Jupiter)
Largest diameter
regolith
Spectroscopic Parallax
8. A star that is burning hydrogen to helium in a shell surrounding it's core
Eclipses of the Moons of Jupiter
Red Giant Branch Star
Blackbody
contrast northern lowlands and the southern highlands of mars...
9. A term referring to Jupiter-like planets
plate tectonics
Light: travels like a wave - detected like a particle
jovian
Color Index
10. Matter so dense that even light cannot escape its gravity
nova
Black Hole
Absorption Spectrum
Galilean satellite
11. When particles are compressed to an unnatural state where their pressure is not related to their temperature
contrast northern lowlands and the southern highlands of mars...
planetary nebula
Ammonia - methane - and water
Degeneracy
12. All possible types of energy that can be emitted and absorbed by atoms.
Zenith
Doppler Shift
Electromagnetic Radiation
interstellar dust
13. Galaxies whose nuclei emit jets of materil at high speeds. material comes from supermassive black holes
Cassini division
radio galaxy
Active Optics
Heliocentric
14. 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.
Light: travels like a wave - detected like a particle
Hydrostatic Equilibrium
Open - flat - and closed.
Sa spiral galaxy
15. A large and bright but cool star.
Parsec
Red Giant
Gamma-ray Burst
MOONS: larger than mercury
16. 1-orbit aroudn the sun 2- are in hydrostatic equilibrium and 'mostly round' 3- have not cleared debris around its orbit 4- are not satellites
plate tectonics
Cosmological Principle
Dwarf planets
Coronal Loop
17. The 11 or 22 period on the sun durin which sunspots increase - decrease - change polarity - increase and decrease again.
Sunspot cycle
Colestial Pole
Cassegrain Focus
AGN
18. A point in the sky where meteors appear to come from during a shower
meteor
H2 Regions
dark energy
radiant
19. The relation that tells how light dims with distance.
Flat - Remain Parallel - Exactly 1
Inverse Square Law
standard candle
Oort cloud
20. An energetic event taking place in the early universe
CMB
OB Associations
The Local Group
Gamma-ray Burst
21. Why do Galaxies move very rapidly in the interiors of the dense clusters?
Hydrostatic Equilibrium
slowest rotation
OB Associations
Dark matter is located at center of clusters - pulling the cluster members into faster orbits--dark matter gravity keeps objects in galxies bound.
22. A star that is in the process of forming. It glows from gravitational contraction
Blackbody Curve
Hydrostatic Equilibrium
protostar
mare basalt
23. Galaxies whose nuclei emit jets of materil at high speeds. material comes from supermassive black holes
2 Reasons Why there are Supermassive Black holes at the center of every Galaxy
contrast northern lowlands and the southern highlands of mars...
radio galaxy
Electromagnetic Radiation: Ultraviolet Light
24. Heavier elements such as iron - silicon - magnesium - sulfer - nickel
Neutron Star
Electromagnetic Radiation: Gamma Ray
Globular Cluster
Make up of the terrestrial planets
25. The trapping of heat by carbon dioxide or other gases in the Earth's atmosphere.
Yes - frozen at the poles- remains protected from the suns rays
greehouse effects
Sa spiral galaxy
H-are Diagram
26. When the Moon entirely blocks the Sun.
Light Curve
Eyepiece Lens
Milky way Galaxy
Total Eclipse
27. The average distance between the Earth and the Sun (=1.5 x10^8km)
If it is in a denser medium - such as glass - it will move slower
Astronomical Unit
Stephen-Boltzman Law
Parallax
28. The study of the universe as a whole.
Horizontal Branch Star
gravity
cosmology
Rich Cluster
29. The elementary building blocks from which protons and neutrons are formed.
Dwarf planets
quarks
Oort cloud
cosmic singularity
30. Elliptical orbits that come inside orbit of the Earth.
Black Hole
Apollo asteroids
era of recombination
dark matter
31. Dark areas on the sun that are cooler than the surrounding photosphere
Hyashi track
great dark spots
Sunspots
deferent
32. Poitns of gravitational stability in the orbit of a planet
mass
difference between maria and highlands of the moon.
E=mc2
Lagrangian Razor
33. Population 1 with higher metals and contain many young stars in star clusters. Distribution of stars is everywhere in disk (arms only have 5% more stars)
Light Gathering Power
Heliocentric
Liquid metallic hydrogen
general star population
34. That which is responsible for Jupiter's magnetic field
Liquid metallic hydrogen
Cepheid variables
blazar
Photometry
35. A rock or iron specimen that has fallen from space
Synchrotron Rotation
Electron
Lagrangian Razor
meteorite
36. 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)
H2 Regions
Flat - Flat
anorthosite
Synchrotron Rotation
37. A spread of light with an uninterrupted wavelength distribution of energy.
meteor shower
Blackbody Curve
Continuous Spectrum
Gamma-ray Burst
38. A nearby galaxy with a quasar-like nucleus. closer but less bright than quasars-weaker
Sb spiral galaxy
Light-Year
Gravitational Lens
Seyfert galaxy
39. The point directly overhead.
Apollo asteroids
Color Index
Zenith
Yes - frozen at the poles- remains protected from the suns rays
40. A very low mass particle formed in solar fusion reactions that reacts only weakly with matter
Perihelion
density parameter
neutrino
meteorite
41. Jupiter
acceleration
Largest diameter
planetary nebula
Light-Year
42. A location on an H-are Diagram where evolving stars pulsate
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.
Instability strip
Europa (Jupiters moon)
density parameter
43. The rotation period of the Earth measured relative to the Sun.
Synodic Day
Plank's Law
Triple Alpha rocess
open star clusters
44. A small round distribution of gas surrounding a dying star
radio galaxy
Superior planets
Planetary Nebula
Asymptotic giant Branch Star
45. 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)
Jupiters red spot
Planck time
nucleus
jovian
46. The gap inthe outer portion of Saturn's A ring
MOONS: largest size
Enke gap
Thermal Equilibrium
chondrite
47. Half of the longest diameter across an ellipse
direct motion
meteor
semimajor axis
great red spot
48. The class of all objects having high energy radiation coming from their nuclei. Active Galactic Nucleus- Blazars - Quasars - Radio and Emit synchrotron radiation
Trojan asteroids
Reflector
Seeing
AGN
49. A representation of the changes in color and brightness of an evolving protostar.
Hyashi track
Population 1 vs Population 2 stars
radio galaxy
fastest rotation
50. Is space infinitely large?
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