which planet is considered earth's
Triton is a moon of which planet?
what two planets are most of the asteroids found between?
Mars and Jupiter
hydrogen and helium combine to make up what % of the universe
which components of the solar system have remained unchanged and provide information
asteroids, comets, meteoric material
the material in the innermost core of earth is
hot and solid
the majority of earthquakes occurs
at the boundaries of tectonic plates
the earth's magnetic field is produced by
electric currents deep within the earth's core
how did the moon originate
Ejection of debris from a collision of a planet sized object with the earth and subsequent coalescence into the Moon.
the volcanoes of mars are
massive and extinct
jupiter mostly consists of
the great red spot on jupiter is
a large long lived storm that is maintained by the planets differential rotation
what is the cause of the slightly flattened oblate shape of jupiter
it's rapid rotation
what do Uranus and Neptune look like
blue-green in color, uranus is almost featureless, neptune has dark clones and white clouds
what planets in our solar system have rings around them?
all of the jovian planets
pluto's orbital path
elliptical and tilted
the nucleus of a comet is
an irregular, dirty ice ball
what is the order of the planets from the sun
mercury, venus, earth, mars, jupiter, saturn, uranus, neptune, pluto
the space between the stars is not empty but filled with low density stars and clouds of dust and gas
1% of the mass is made up of microscopic dust particles
nebulae is clear evidence of ____
an interstellar medium
3 kinds of nebulae
emission nebulae, reflection nebulae, dark nebulae
produced where very hot stars excite clouds of low density gas to emit light
where slightly cooler stars illuminate gas clouds containing dust; provide evidence that the dust in the clouds is made up of very small particles
produced where dense clouds of gas and dust are silhouetted against background regions filled with stars or bright nebulae
when stars look slightly redder than they should
which 2 planets do not have any moons
mercury and venus
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