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48 Cards in this Set
- Front
- Back
Which of the following types of electromagnetic radiation has the shortest wavelength?
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x-rays
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Lunar Eclipses Occur at the time of a ___ moon
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full
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Solar Eclipses occur at the time of a ____ moon
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new
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12. As a hot solid, like a light bulb filament, is decreased in temperature the peak of it's emission spectrum shifts toward,
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longer wavelengths
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The Earth is furthest from the Sun around
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July 4th
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Neap tides occur
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during the first and third quarter of the moon
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Short-Period comets are believed to originate in the ____
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Kuiper Belt
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Meteor showers usually occur when Earth passes through
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A comet's orbit
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A peice of space "rock" which hits the Earth's surface is called a
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Meteorite
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Where do most scientists think the killer asteroid struck?
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Yucatan peninsula in Mexico
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"Splosh" impact craters on its surface
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Mars
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Two small, odd-shaped, moons that may be captured asteroids orbit this body
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Mars
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This body is the most volcanically active in our solar system
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Io
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Prominences always connect
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two sunspots
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In which region of the sun does nuclear fusion take place?
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The core
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When our sun becomes a bluish-white dwarf, its "surface" temperature will go __ and its luminosity will go __-.
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up, down
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Which type of Em radiation typically penetrates best through interstellar dust?
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21 cm radiation
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Which of the following will our sun never be at any time during its life?
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Type 1 Supernova
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Interstellar Matter is made up of
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Individual atoms & molecules
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Single Stars with a mass exceeding 8 solar masses will eventually become...
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type II supernova
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The red&blue shift of star light is caused by
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The Dopler Effect
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A neutron star will continue to collapse into a black hole if it's remaining mass is about __ times that of the sun.
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3
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A hypernova is proposed by some astrophyscicists as a possible explaination for the huge nergy emission of
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gamma-ray bursters
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A large red shift in astronomy implies that the object is
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very distant
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The distribution of globular clusters near the Milky Way is almost ___ in shape.
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spherical
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Which type of variable star has a luminosity that is almost constant with changing rate of pulsation?
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RR lyrae variables
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The diameter of the Milky Way galazxy is approximately
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30 KPC
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So far, all known forms of life use the element ____ as the basic foundation of their organic chemistry.
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carbon
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___ is considered to be the nexxt most probable place in our solar system to find life, after the Earth, of course!
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mars
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Which of the following planets has the shortest period of orbital motion?
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venus
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Scientific study and measurement of the wavelengths and frequencies emitted and absorbed by matter is called _____
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spectroscopy
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The time for the moon to spin on its axis is ___ to its orbital period.
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Equal too
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It was discovered that Eros has
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large impact craters that indicate it is very "solid" and not easily fragmented.
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Which is furthest from the sun?
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The oort cloud
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In tilt of its axis and rate of spin, this body is almost the twin of mars
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Earth
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Largest temperature variation
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Mercury
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Phobos orbits this body
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Mars
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The surface of this body displays large scarps, probably caused by rapid cooling
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mercury
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The proton-proton chain that occurs in the sun is an example of
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fusion of hydrogen nuclei into helium
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In which region of the sun does fusion take place?
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The Cored
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Spectral and luminosity class in the sun
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G2V
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Which of the following is furthest from the sun?
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A typical quasar
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At some point in its life, the heaviest fusion fuel that our Sun is expected to use is
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helium
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A typical supernova II emits most of its radiation over a period of about ___
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6 months
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Millisecond pulsars rotate fast gained from
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infalling material
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"Cross over point" is estimated to have occured ___ years after the big bang.
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3,000
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What is the evidence so far to support the Big Bang model?
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Cosmic microwave background & hubbles law
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In seti research, what is the "water hole"?
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A quiet region of the EM spectrum
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