ASTRO 7N UNIT 1 EXAM QUESTIONS AND
ANSWERS GRADED A+ LATEST UPDATE.
according to newton's second law of motion, if the net force acting on the object
increases while the mass of the object remains constant, what happens to the
acceleration? ANS >>> acceleration increases
if the earth were moved to half its current distance from the sun, how would the
force of gravity by the sun on the earth change? ANS >>> it would be four times
stronger
what did newton's law of universal gravitation tell us about how gravity works?
ANS >>> the force of gravity from the sun will be stronger on an object with more
mass
the earth radius is about 6400 km. if you were in orbit in the space station 150 km
above the ground, the force of gravity you feel from earth would be ANS >>>
slightly weaker than when you are standing on earth
if you were to sit on the ground, there would be a force due to gravity pulling you
toward the earth. which of the following is true according to newton's 3rd law?
ANS >>> you are pushing the earth away from yourself with the same force
, what would happen to the earth if the sun's gravity somehow turned off
instantaneously? ANS >>> it would continue to move in a line in the same direction
it was moving when the gravity turned off
consider a planet whose rotation axis is not tilted with respect to its orbital plan.
what are the seasons like on this planet? ANS >>> there are no seasons
if the earth rotated on its axis more slowly than it does now ANS >>> the days
would be longer
if earth had its orbit changed so that at all points along its orbit it was always the
same distance from the sun (circular orbit), how would this affect the seasons on
earth? ANS >>> they would be the same as they are now
a new planet orbits its star faster than the earth orbits the sun and it rotates more
slowly than the earth rotates. which of the following is true? ANS >>> the new
planet has a shorter year than earth and a longer day than earth
what time of year is it darking all day (and night) at the south pole of earth? ANS
>>> June
why isn't there an eclipse every month on earth ANS >>> the moon's orbit around
earth is actually tipped about 5 degrees to earth's orbit around the sun so the
moon isn't always in the right plane for an eclipse to occur
what is the inclination of mars? ANS >>> about 1 degree
ANSWERS GRADED A+ LATEST UPDATE.
according to newton's second law of motion, if the net force acting on the object
increases while the mass of the object remains constant, what happens to the
acceleration? ANS >>> acceleration increases
if the earth were moved to half its current distance from the sun, how would the
force of gravity by the sun on the earth change? ANS >>> it would be four times
stronger
what did newton's law of universal gravitation tell us about how gravity works?
ANS >>> the force of gravity from the sun will be stronger on an object with more
mass
the earth radius is about 6400 km. if you were in orbit in the space station 150 km
above the ground, the force of gravity you feel from earth would be ANS >>>
slightly weaker than when you are standing on earth
if you were to sit on the ground, there would be a force due to gravity pulling you
toward the earth. which of the following is true according to newton's 3rd law?
ANS >>> you are pushing the earth away from yourself with the same force
, what would happen to the earth if the sun's gravity somehow turned off
instantaneously? ANS >>> it would continue to move in a line in the same direction
it was moving when the gravity turned off
consider a planet whose rotation axis is not tilted with respect to its orbital plan.
what are the seasons like on this planet? ANS >>> there are no seasons
if the earth rotated on its axis more slowly than it does now ANS >>> the days
would be longer
if earth had its orbit changed so that at all points along its orbit it was always the
same distance from the sun (circular orbit), how would this affect the seasons on
earth? ANS >>> they would be the same as they are now
a new planet orbits its star faster than the earth orbits the sun and it rotates more
slowly than the earth rotates. which of the following is true? ANS >>> the new
planet has a shorter year than earth and a longer day than earth
what time of year is it darking all day (and night) at the south pole of earth? ANS
>>> June
why isn't there an eclipse every month on earth ANS >>> the moon's orbit around
earth is actually tipped about 5 degrees to earth's orbit around the sun so the
moon isn't always in the right plane for an eclipse to occur
what is the inclination of mars? ANS >>> about 1 degree
