chapter 5 Flashcards
which planet is 1.00 ua from the sun
mercury
what is the fastest moving planet
pluto
which planet has 67 known moons
jupiter
which planet is the brightest
venus
which planet is noted for it’s great red spot
jupiter
why is saturn’s moon Titan unique
it has it’s own atmosphere
why do scientists theorize that some planets radiate more energy than they receive from the sun
they are heating up as they collapse
which planet has the most eccentric orbit
pluto
who developed the three laws of planetary motion
Johannes Kepler
what are the three factors that determine a planet’s apparent magnitude
albeto
size
distance
what are the planets that are farther from the sun than the earth called
superior planets
what are planets that are like the earth in density and size called
terresterial planets
what do Jovian planets lack
free oxygen and water
which planet is called the red planet
mars
which planet has space probes shown to have thousands of rings
saturn
which planet was discovered in 1846 and confirmed Newton’s law of gravitation because it was discovered less than one degree from its calculated position
Neptune
which planet is the smallest
pluto
why can we not see Venus in its full phase
it happens behind the sun
why is pluto not always the most distant planet in the solar system
it crosses neptunes orbit
what observations are not accounted for in the theory of solar system formation by condensation from a single planetary nebula
some of the planets rotate in the opposite direction
what is the shape of a planet’s orbit
ellipse
what is the farthest point from the sun in a planet’s orbit
aphelion
nearest approach to the sun
perihelion
what is the downward pull of an object in a olanet
surface gravity
what is the apparent reversal in the direction of a planet’s motion compared to fixed stars
retrograde orbit
what is to pass in front of the sun as viewed from the earth
transit
