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Terms in this set (26)
The average distance between Earth and the sun, used to measure distances in our solar system only
object spinning on its axis( creates night and day on earth) 1 rotation every 24 hours
one object moving a fixed distance around another
object completing one orbit (365 days on earth= 1 year)
Nuclear fusion Created our sun by?
compressed materials in the center of the cloud involved conversion of the gravitation energy into thermal energy.
attraction between two objects. Increases with mass and smaller distances.
Earth is the center of the Universe
is when they thought the sun was the center of the universe
My Very Enthusiastic Mother Just Served Us Noodles
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
The sun makes up 99% of all the mass in our solar system and is a main sequence star, what types of gases makes it up?
Hydrogen and hydrogen
suns layers (c,r,c,p,c,c)
core, radiation zone, convection zone,
photosphere, chromosphere, corona
terrestrial planets (inner planets)
The name given to the four inner planets witch are rocky planets: Mercury, Venus, Earth, and Mars
Jovian Planets (outer planets)
Jupiter, Saturn, Uranus, Neptune These are gas planets.
The law of conservation of energy
Energy cannot be created or destroyed
refers to the energy of particles withen matter
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The eclipsing binary Algol drops from maximum to minimum brightness in about 4 hours, remains at minimum brightness for 20 minutes, and then takes another 4 hours to return to maximum brightness. Assume that we view this system exactly edge-on, so that one star crosses directly in front of the other. Is one star much larger than the other, or are they fairly similar in size?
What are the approximate spectral classes of stars with the following characteristics? A. Balmer lines of hydrogen are very strong; some lines of ionized metals are present. B. The strongest lines are those of ionized helium. C. Lines of ionized calcium are the strongest in the spectrum; hydrogen lines show only moderate strength; lines of neutral and metals are present. D. The strongest lines are those of neutral metals and bands of titanium oxide.
Suppose you are standing at the exact center of a park surrounded by a circular road. An ambulance drives completely around this road, with siren blaring. How does the pitch of the siren change as it circles around you?
How many degrees does the Moon move per day relative to the fixed stars? How many days does it take for the Moon to return to its original location relative to the fixed stars?
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