The reason that the Galilean satellites (i.e. the 4 large moons orbit about Jupiter)
is that - ANSWER The satellites experience a greater acceleration than does
Jupiter
What did Ancient Greek astronomers understand? - ANSWER That Venus is
never far from the sun in the sky
What did Johannes Kepler disagree with? - ANSWER That the universe is infinite
in extent
In the context of modern, scientific cosmology... - ANSWER There can be no
center to the universe
_____ transmits energy through space without the need for physical connection
between the starting and ending points - ANSWER radiation
In order for an acceleration of an object to occur... - ANSWER The object's
velocity must change
The correct explanation of the origin of the retrograde motion of Mars is that the
Earth is ____ the sun than Mars and is moving at a _____ speed in its order
compared to Mars - ANSWER closer to; fast
The larger the amplitude of a wave, the larger is its____ - ANSWER displacement
from equilibrium
Whose meticulous records of the motions of planets allowed Johannes Kepler to
formulate his three laws of planetary motions? - ANSWER Tycho Brahe
Suppose you have two cat toys, each of which as the same mass. You tie each
toy to the end of a string. Also suppose the string to which you tied Toy 1 is twice
as long as the string to which you tied Toy 2. You hold the ends of each string
and swing the toys in circles, so Toy 1 is making a circle with a radius that is
twice as large as the radius of the circle that Toy 2 is making. Which of the
following would have to be true for both toys to have the same speed? You will
need to exert - ANSWER twice as much force on Toy 2 as you exert on Toy 1
Voids are region of space... - ANSWER with very few galaxies
Consider two waves, A and B. Both waves have the same wavelength, but the
amplitude of Wave A is twice as large as the amplitude of Wave B. If you line up
, the crests of Wave A with the troughs of Wave B, and combine them into a single
wave, the result will be a wave with - ANSWER an amplitude that is equal to the
amplitude of Wave B
Part complete
The Ancient Greeks believed that the sun orbited the earth because - ANSWER
stars did not show parallax
Homogeneity of the universe requires that - ANSWER the laws of nature are
identical everywhere in the universe
The more elliptical is a planet's orbit, the... - ANSWER more its speed will change
over the course of its orbit about the sun
Consider two different planetary systems in which the planets are moving on
circular orbits. Both orbits have a radius of 1 AU. Planet A orbits Star A at a
speed that is 9 times greater than the speed with which Planet B orbits Star B.
Therefore, the mass of Star A is - ANSWER 81 times larger than the mass of Star
B
Scientific cosmology does NOT attempt to address... - ANSWER What is the
universe expanding into?
Part complete
You measure the average speeds of the molecules in two gasses, A and B, and
you find that the average speed of the molecules in gas A is considerably larger
than the average speed of the molecules in gas B. You can therefore conclude -
ANSWER gas B is cooler than gas A
If you were to travel to a galaxy that is located about 10 million light years from
the Milky Way, you would - ANSWER find that the farther a galaxy is away from
you, the faster it is moving away from you
What is the appropriate minimum length scale over which the universe can be
considered both homogenous and isotropic? - ANSWER 2.5 billion light years
Observatories for tracking motions in the sky.... - ANSWER were built long before
telescopes were invented
Part complete
A planet is discovered to be orbiting a star in our Galaxy. If the mass of the planet
is very much less than the mass of the star, and it takes the star 8 years to orbit
the star, the semi-major axis of the star's orbit is - ANSWER 4 AU
The word color ___ the words red, yellow, and green - ANSWER subsumes
is that - ANSWER The satellites experience a greater acceleration than does
Jupiter
What did Ancient Greek astronomers understand? - ANSWER That Venus is
never far from the sun in the sky
What did Johannes Kepler disagree with? - ANSWER That the universe is infinite
in extent
In the context of modern, scientific cosmology... - ANSWER There can be no
center to the universe
_____ transmits energy through space without the need for physical connection
between the starting and ending points - ANSWER radiation
In order for an acceleration of an object to occur... - ANSWER The object's
velocity must change
The correct explanation of the origin of the retrograde motion of Mars is that the
Earth is ____ the sun than Mars and is moving at a _____ speed in its order
compared to Mars - ANSWER closer to; fast
The larger the amplitude of a wave, the larger is its____ - ANSWER displacement
from equilibrium
Whose meticulous records of the motions of planets allowed Johannes Kepler to
formulate his three laws of planetary motions? - ANSWER Tycho Brahe
Suppose you have two cat toys, each of which as the same mass. You tie each
toy to the end of a string. Also suppose the string to which you tied Toy 1 is twice
as long as the string to which you tied Toy 2. You hold the ends of each string
and swing the toys in circles, so Toy 1 is making a circle with a radius that is
twice as large as the radius of the circle that Toy 2 is making. Which of the
following would have to be true for both toys to have the same speed? You will
need to exert - ANSWER twice as much force on Toy 2 as you exert on Toy 1
Voids are region of space... - ANSWER with very few galaxies
Consider two waves, A and B. Both waves have the same wavelength, but the
amplitude of Wave A is twice as large as the amplitude of Wave B. If you line up
, the crests of Wave A with the troughs of Wave B, and combine them into a single
wave, the result will be a wave with - ANSWER an amplitude that is equal to the
amplitude of Wave B
Part complete
The Ancient Greeks believed that the sun orbited the earth because - ANSWER
stars did not show parallax
Homogeneity of the universe requires that - ANSWER the laws of nature are
identical everywhere in the universe
The more elliptical is a planet's orbit, the... - ANSWER more its speed will change
over the course of its orbit about the sun
Consider two different planetary systems in which the planets are moving on
circular orbits. Both orbits have a radius of 1 AU. Planet A orbits Star A at a
speed that is 9 times greater than the speed with which Planet B orbits Star B.
Therefore, the mass of Star A is - ANSWER 81 times larger than the mass of Star
B
Scientific cosmology does NOT attempt to address... - ANSWER What is the
universe expanding into?
Part complete
You measure the average speeds of the molecules in two gasses, A and B, and
you find that the average speed of the molecules in gas A is considerably larger
than the average speed of the molecules in gas B. You can therefore conclude -
ANSWER gas B is cooler than gas A
If you were to travel to a galaxy that is located about 10 million light years from
the Milky Way, you would - ANSWER find that the farther a galaxy is away from
you, the faster it is moving away from you
What is the appropriate minimum length scale over which the universe can be
considered both homogenous and isotropic? - ANSWER 2.5 billion light years
Observatories for tracking motions in the sky.... - ANSWER were built long before
telescopes were invented
Part complete
A planet is discovered to be orbiting a star in our Galaxy. If the mass of the planet
is very much less than the mass of the star, and it takes the star 8 years to orbit
the star, the semi-major axis of the star's orbit is - ANSWER 4 AU
The word color ___ the words red, yellow, and green - ANSWER subsumes
