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Test your basic knowledge |
DSST Astronomy 2
Start Test
Study First
Subjects
:
dsst
,
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. Remnant radiation from the big bang - which we detect using radio telescopes
View of the moon
solar flare
cosmic microwave background radiation
The Sun
2. Highest tidal range that occurs to the alignment of Earth - the moon - and the sun - East West pull
local sky (observer's coordinates)
Meridian
Spring tide
solar flare
3. How long does it take for Earth to orbit the sun?
celestial sphere
365.2425 (Vernal Equinox year)
Earth orbit
Tidal Waves
4. The Milky way observed through a cross section - Our solar system is 27 -000 light years away from the Galactic bulge
Earth Rotation
celestial sphere
Galactic Cross
Equinox
5. Apparent motion of the planets when they appear to move backwards (westward) with respect to the stars from the direction that they move ordinarily.
Spring tide
The Moon
retrograde motion
solar flare
6. Dense - fusion takes place here (15 -000 -000K)
New Moon
sun core
Waxing Moon
Closest star to the Sun
7. Galaxy with a bulge in the middle and arms that extend outward in a pinwheel pattern
Polaris
Meridian
Spiral Galaxy
Lunar eclipse
8. Galaxy with a very bright center that contains little dust and gas and is spherical to disklike in shape
Elliptical Galaxy
solar flare
Solar Eclipse
retrograde motion
9. Sudden - violent eruption of electrically charged atomic particles from the sun's surface
local sky (observer's coordinates)
Local Group
Meridian
solar flare
10. The phase of the moon in which only a curved edge of the moon's side that faced earth is illuminated
Age of Sun
Crescent Moon
Meridian
View of the moon
11. Occurs when the Moon passes directly between the Sun and Earth and casts a shadow over part of Earth
Crescent Moon
Big Bang Theory
Johannes Kepler' laws
Solar Eclipse
12. Caused by the TILT of the Earth. - Summer = Northern hemisphere tilted closer to sun Winter = Northern hemisphere tilted farther from sun.
Crescent Moon
Seasons
celestial sphere
spicule
13. 1. an object at rest willl stay at rest - and an object in motion will stay in motion at constant velocity unless acted upon by an unbalanced force 2. force = mass X acceleration 3. for every action there is an equal and opposite reaction
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14. New moon - (waxing or waning) crescent moon - quarter moon - (waxing or waning) gibbous moon - and full moon
Solstice
plage
Local Group
Moon Phases
15. A galaxy that does not fit into any other category;
Lunar eclipse
Irregular Galaxy
Galactic Cross
retrograde motion
16. Earth is the center of the universe. Aristotelian.
Tidal Waves
geocentric theory
Lunar eclipse
cosmic microwave background radiation
17. Sky as seen from wherever you happen to be standing; appears to be hemisphere or dome; only half of celestial sphere
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18. Alpha Centauri - 4.37 light years away OR Proxima Centauri - 4.24 light years away
Closest star to the Sun
Johannes Kepler' laws
spicule
The Sun
19. 1. Mass-Energy Equivalence (when a body has a mass it has a certain energy even if not moving); 2. General Relativity (gravitational attraction between masses is a result of the nearby masses. gravity has waves.)
moon orbit
Waxing Moon
Age of Sun
Albert Einstein laws
20. The sun and stars move across the sky because of this - the stars rotate around Polaris - the North Star and make a complete circle around Polaris.
Crescent Moon
moon orbit
Earth Rotation
celestial sphere
21. The blocking of sunlight to the moon that occurs when Earth is directly between the sun and the moon
Meridian
Crescent Moon
Lunar eclipse
Spiral Galaxy
22. A twice-monthly tide of minimal range that occurs when the Sun - Moon - and Earth are at right angles to each other - thus decreasing the total tidal force exerted on Earth causes North South pull
Horizon
View of the moon
neap tide
Closest star to the Sun
23. Only one side
Big Bang Theory
Spiral Galaxy
Closest star to the Sun
View of the moon
24. The phase of the Moon when a decreasing amount of the Moon's near side is sunlit
Spiral Galaxy
Waning Moon
Tidal Waves
Irregular Galaxy
25. Almost directly over the North Pole - and does not seem to move at all. If the star rises perpendicular to the horizon - the observer is standing on the equator
moon orbit
Gibbous Moon
heliocentric theory
Polaris
26. Example of a natural satellite - Earth's natural satellite
Johannes Kepler' laws
Spring tide
heliocentric theory
The Moon
27. The phase of the moon in which three-fourths of the moon's side that faces earth is illuminated
Crescent Moon
Gibbous Moon
Earth orbit
365.2425 (Vernal Equinox year)
28. Possible since carbon based planets are common - especially on Mars and Alpha Centauri
Extra terrestrial life theory
Irregular Galaxy
Johannes Kepler' laws
Polaris
29. Two days of the year on which neither hemisphere is tilted toward or away from the sun
Spiral Galaxy
Solstice
Equinox
heliocentric theory
30. Earth's average distance from the Sun - which is approximately 150 million kilometers.
Irregular Galaxy
The Moon
Big Bang Theory
AU (Astronomical Unit)
31. The universe originated 13.7 billion years ago from the cataclysmic explosion of a small mass of matter at extremely high density and temperature helium was present - universe is expanding and cooling
Big Bang Theory
spicule
moon orbit
Seasons
32. Point above the observer that is directly opposite the nadir on the imaginary sphere against which celestial bodies appear to be projected
celestial sphere
Zenith
spicule
neap tide
33. Closet star to earth - and is a glowing ball of gas made up of 3/4 hydrogen and 1/4 helium - Produces heat by fusion - provides the gravitational pull that keeps our solar system together
The Sun
Equinox
Local Group
Seasons
34. 4.5 billion years
Age of Sun
Death of the Sun
The Moon
Lunar eclipse
35. Phase that occurs when all of the Moon's surface facing Earth reflects light.
moon orbit
Full Moon
Galactic Bulge
Meridian
36. The phase of the Moon when an increasing amount of the Moon's near side is sunlit
Extra terrestrial life theory
Johannes Kepler' laws
View of the moon
Waxing Moon
37. Cooler and not as bright as the surrounding areas and that is caused by the sun's magnetic feild
Spiral Galaxy
sun spot
celestial sphere
Sir Isaac Newton's laws
38. A cycle of rise and drop in the ocean; caused be the gravitational pull of the Earth - Sun - and Moon.
Tidal Waves
Seasons
Big Bang Theory
Solar Eclipse
39. Moon phase that occurs when the Moon is between Earth and the Sun - at which point the Moon cannot be seen because its lighted half is facing the Sun and its dark side faces Earth
retrograde motion
365.2425 (Vernal Equinox year)
Sir Isaac Newton's laws
New Moon
40. Apparent line in the distance where the sky meets the sea or land
Horizon
Earth Rotation
Crescent Moon
AU (Astronomical Unit)
41. Every thing revolves around the sun studied by Galelo and Copernicus
heliocentric theory
plage
Death of the Sun
The Moon
42. Imaginary sphere surrounding Earth on which celestial bodies are projected.
celestial sphere
The Sun
Galactic Bulge
Full Moon
43. Jets of hot gas that extend from the Sun to around 20 -000 kilometers beyond the photosphere.
Elliptical Galaxy
spicule
Earth Rotation
Death of the Sun
44. A gathering of roughly 30 Galaxies in which the Milky way belongs
Horizon
cosmic microwave background radiation
Age of Sun
Local Group
45. Thick distribution of warm gas and stars around the galactic center.
geocentric theory
AU (Astronomical Unit)
Galactic Bulge
The Sun
46. 29.5 days
Spiral Galaxy
heliocentric theory
moon orbit
Moon Phases
47. Bright regions seen in the solar chromosphere
Zenith
New Moon
spicule
plage
48. Imaginary great circle on the surface of the earth passing through the north and south poles at right angles to the equator
Meridian
Solar Eclipse
Spiral Galaxy
Moon Phases
49. When the Sun becomes a Red Giant - 10 billion years - Then a White Dwarf - aproximately 12 billion years
Spiral Galaxy
The Sun
Full Moon
Death of the Sun
50. 3 laws of Planetary Motion: 1. orbits are elliptical 2. Planets revolve at varying speeds 3. Planets revolve in proportion to distance from Sun
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