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Test your basic knowledge |
Cosmology
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Study First
Subject
:
science
Instructions:
Answer 50 questions in 15 minutes.
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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 is burning hydrogen to helium in a shell surrounding it's core
MOONS: most geologically active
Red Giant Branch Star
Density Wave
meteor shower
2. Neptune or uranus
Coldest surface
Electromagnetic Radiation
most moons
Photometry
3. Jupiter
Annular Eclipse
Doppler Shift
rotation curve=winding dilemma?
most moons
4. The point where an inferior planet is as far away from the sun as it can be (as seen from the Earth)
greatest elongation
Open - flat - and closed.
Flare
Black Hole
5. Sudden blasts of gamma radiation from a very distant galaxy caused possibly by a supernova explosion.
Cosmic Microwave Background (CMB)
Seeing
Gamma ray bursts
Magnification
6. The process that powers the sun and hydrogen bombs
Black Hole
Thermonuclear Fusion
Interstellar Extinction
condensation temperature
7. A small and dim but hot star.
general star population
Void
White Dwarf
disk
8. A cool collection of gas and dust silhouetted against a brighter background of stars and/or gas
Dark Nebula
Cassegrain Focus
Corona
Cepheid variables
9. Cold aggregates of gas - large and contain a huge amount of matter - so cold that molecules stick together to form molecules.
molecular clouds
quarks
Ionization
critical density
10. The shadow behind the Earth or Moon where the Sun is partially obscured.
Galilean satellite
Spectroscopic Parallax
Penumbra
Degeneracy
11. The rock that makes up the lunar maria
hottest surface
mare basalt
Population 1 vs Population 2 stars
Ionization
12. The force of attraction between any two objects having mass
Colestial Pole
anorthosite
MOONS: larger than mercury
gravity
13. A crystalline patter found in iron meteorites
Eyepiece Lens
differential rotation
opposition
widmanstatten pattern
14. A small chunk of rock in space
meteoriod
Milky way Galaxy
differential rotation
Trojan asteroids
15. The study of the universe as a whole.
Triple Alpha rocess
cosmology
Halo
Cosmological Principle
16. The mass of an object divided by its volume
belt
density
Photometry
Big Crunch
17. A rock or iron specimen that has fallen from space
superclusters
partile horizon
meteorite
Spectroscopic parallax
18. Elliptical orbits that come inside orbit of the Earth.
Ionization
Flocculent spirals
Apollo asteroids
Absolute Magnitude
19. The process of acquiring material
accretion
Total Eclipse
Focal Plane
contrast northern lowlands and the southern highlands of mars...
20. That which is responsible for Jupiter's magnetic field
Hipparchus
High Velocity Stars
Liquid metallic hydrogen
Kuiper belt
21. The science of measuring the apparent magnitudes of stars by imaging them through different filters.
Make up of the jovian planets
density
Photometry
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.
22. The north-south line passing directly overhead through the zenith.
Meridian
Limb darkening
Resolving Power
density parameter
23. Hydrogen and helium (mainly)
Make up of the jovian planets
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.
cosmic fireball
Occam's razor
24. A streak of light in the atmosphere
Particle Horizon
meteor
Terrestrial Planets
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.
25. Sc galaxies
Flocculent spirals
Electromagnetic Radiation
Shepherd satellite
Sunspot cycle
26. Dark areas on the sun that are cooler than the surrounding photosphere
Hubble constant
radio lobe
Sunspots
Terrestrial Planets
27. Galaxies whose nuclei emit jets of materil at high speeds. material comes from supermassive black holes
standard candle
Void
Eyepiece Lens
radio galaxy
28. A planet orbiting about a distant star
Extrasolar Planet
force
Meridian
Open Cluster
29. The lens in a telescope used to determine the magnification
Apollo asteroids
Eyepiece Lens
How is winding dilemma solved?
reflection star clusters
30. The amount an image is enlarged by a telescope
Chromosphere
Rich Cluster
Magnification
hottest surface
31. Saturn
gravity
resonance
least dense
synchronous rotation
32. The powdered stone fragments that make up the lunar 'soil'
Gamma-ray Burst
Kuiper belt
regolith
Sa spiral galaxy
33. Any class of objects with a uniform luminosity used to determine distance.
Main Sequence Stars
standard candle
Interstellar Extinction
density waves
34. A two-filter measure of the color - and hence temperature - of a star.
Absolute Magnitude
highlands
Color Index
Secondary Mirror
35. What are the three possible geometries of the universe?
Open - flat - and closed.
Oort Cloud
great dark spots
2 Reasons Why there are Supermassive Black holes at the center of every Galaxy
36. The 11 or 22 period on the sun durin which sunspots increase - decrease - change polarity - increase and decrease again.
Absolute Magnitude
condensation temperature
Continuous Spectrum
Sunspot cycle
37. Largest moon in solar system - two differenet types of terrain - darker terrain is older - NOT ACTIVE SURFACE
Gravitational Lens
Enke gap
Absorption Spectrum
Ganymede (Jupiter)
38. Centered on the sun.
Heliocentric
inferior planets
MOONS: thickest atmosphere
Light Gathering Power
39. Mercury
Electromagnetic Radiation: Infrared
density waves
hottest surface
smallest diameter
40. A large and bright but cool star.
Particle Horizon
Red Giant
Globular Cluster
isotropic
41. A measure of the ability of a telescope to see fine detail
quarks
difference between maria and highlands of the moon.
Resolving Power
Sc spiral galaxy
42. The apparent backward motion of a planet against the background of stars.
retrograde motion
Differential Rotation
Secondary Mirror
Nebula
43. 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
Asymptotic giant Branch Star
density parameter
Absorption Spectrum
Jupiters red spot
44. A word used in astronomy to describe all elements besides hydrogen and helium
Metals
chemical differentiation
mass
2 Reasons Why there are Supermassive Black holes at the center of every Galaxy
45. Dying small mass stars lose their outer layers in a relatively gentle way - creating a round or bipolar nebula about the star (round like planets)
Earth resurfaces itself due to erosion and plate tectonics - while the moon has neither.
Neutron Star
radiation pressure
planetary nebula
46. Ganymede and Titan
Jovian Planets
aphelion
Blackbody Curve
MOONS: larger than mercury
47. The time when the universe cooled sufficiently for atoms to exist. radiation dominated= first 300000 years - THEN era of recombination turns into matter dominated for next.
era of recombination
CMB
dark energy
critical density
48. Any change in the speed or direction of an object's motion
Cassegrain Focus
disk
Neutron Star
acceleration
49. Poitns of gravitational stability in the orbit of a planet
Spectral Lines
Ionization
OB Associations
Lagrangian Razor
50. Plate tectonics due to thickness of crust and maintain their general form when they collide-where most volcanoes are.
retrograde motion
tectonics of Earth
aphelion
Terrestrial Planets
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