Astronomy (4) Study Guide Test.
which one of the following describes an object that is accelerating? - CORRECT ANSWER A car going
around a circular track at a steady 100 miles per hour.
Suppose you visit another planet: - CORRECT ANSWER Your mass would be the same as on Earth, but
your weight would be different.
Which person is weightless? - CORRECT ANSWER A child in the air as she plays on a trampoline.
Consider the statement "There's no gravity in space." This statement is: - CORRECT ANSWER completely
false
If you want to make a rocket turn left, you need to: - CORRECT ANSWER Fire an engine that shoots out
gas to the right.
Compared to its angular momentum when it is farthest from the Sun, Earth's angular momentum when
it is nearest to the Sun is: - CORRECT ANSWER the same
the gravitational potential energy of a contracting interstellar cloud - CORRECT ANSWER gradually
transforms into other forms of energy
If Earth were twice as far from the Sun, the force of gravity attracting Earth to the Sun would be -
CORRECT ANSWER one quarter as strong
According to the law of universal gravitation, what would happen to Earth if the Sun were somehow
replaced by a black hole of the same mass? - CORRECT ANSWER Earth's orbit would not change
If the Moon were closer to Earth, high tides would - CORRECT ANSWER Be higher than they are now
speed - CORRECT ANSWER the rate at which an object is moving
which one of the following describes an object that is accelerating? - CORRECT ANSWER A car going
around a circular track at a steady 100 miles per hour.
Suppose you visit another planet: - CORRECT ANSWER Your mass would be the same as on Earth, but
your weight would be different.
Which person is weightless? - CORRECT ANSWER A child in the air as she plays on a trampoline.
Consider the statement "There's no gravity in space." This statement is: - CORRECT ANSWER completely
false
If you want to make a rocket turn left, you need to: - CORRECT ANSWER Fire an engine that shoots out
gas to the right.
Compared to its angular momentum when it is farthest from the Sun, Earth's angular momentum when
it is nearest to the Sun is: - CORRECT ANSWER the same
the gravitational potential energy of a contracting interstellar cloud - CORRECT ANSWER gradually
transforms into other forms of energy
If Earth were twice as far from the Sun, the force of gravity attracting Earth to the Sun would be -
CORRECT ANSWER one quarter as strong
According to the law of universal gravitation, what would happen to Earth if the Sun were somehow
replaced by a black hole of the same mass? - CORRECT ANSWER Earth's orbit would not change
If the Moon were closer to Earth, high tides would - CORRECT ANSWER Be higher than they are now
speed - CORRECT ANSWER the rate at which an object is moving
