Astro 1 exam 1 Penn State 1 UPDATED
ACTUAL Questions and CORRECT
Answers
Newton's first law of motion - CORRECT ANSWER✔✔- an object at rest or in motion in a
straight line at a constant speed will remain in that state unless acted upon by a force
Newton's second law of motion - CORRECT ANSWER✔✔- The acceleration of a body due
to a force will be in the same direction as the force, with a magnitude inversely proportional
to its mass
Newton's third law of motion - CORRECT ANSWER✔✔- for every action, there is an equal
and opposite reaction
force equation - CORRECT ANSWER✔✔- force = mass * acceleration
The force of gravity by the sun keeps the planets in orbit around it, but how do the planets
affect the sun? - CORRECT ANSWER✔✔- they exert an equally strong pull on the sun,
causing it to move slightly
If i apply exactly the same amount of force to a pebble and a boulder what will happen? -
CORRECT ANSWER✔✔- the pebble will move faster
weight formula - CORRECT ANSWER✔✔- weight = mass x gravity
how high are you jumping at 2x earth's mass? - CORRECT ANSWER✔✔- half as high
since the jump height is half as high what does that tell us about the gravity? - CORRECT
ANSWER✔✔- gravity is twice as much
gravity equation - CORRECT ANSWER✔✔- gravity = m/r^2
, what causes seasons - CORRECT ANSWER✔✔- the planet's tilt with respect to plane in
which they orbit the sun
equinox - CORRECT ANSWER✔✔- 12 hours of day, 12 hours of night
What day do the equinoxes fall on and what months - CORRECT ANSWER✔✔- the 21st of
September and March
solstice - CORRECT ANSWER✔✔- longest and shortest days of the year
day and month each solstice falls on - CORRECT ANSWER✔✔- December 21st, June 21st
two moons of mars - CORRECT ANSWER✔✔- Phobos and deimos
solar eclipse - CORRECT ANSWER✔✔- Occurs during moon's 'new' phase when moon lies
in direct line between sun and earth
lunar eclipse - CORRECT ANSWER✔✔- Occurs when moons is opposite the sun from
earth or during the full moon phase
moons phases in order, counter-clockwise - CORRECT ANSWER✔✔- new moon →
waxing crescent → first quarter moon → waxing gibbous → full moon → waning gibbous →
last quarter moon → waning crescent → new moon (repeat)
how many phases a week does the moon go through - CORRECT ANSWER✔✔- approx 2
how much is the moon illuminated at all times - CORRECT ANSWER✔✔- 50%
waning - CORRECT ANSWER✔✔- less illuminated in coming days
waxing - CORRECT ANSWER✔✔- more illuminated in coming days
ACTUAL Questions and CORRECT
Answers
Newton's first law of motion - CORRECT ANSWER✔✔- an object at rest or in motion in a
straight line at a constant speed will remain in that state unless acted upon by a force
Newton's second law of motion - CORRECT ANSWER✔✔- The acceleration of a body due
to a force will be in the same direction as the force, with a magnitude inversely proportional
to its mass
Newton's third law of motion - CORRECT ANSWER✔✔- for every action, there is an equal
and opposite reaction
force equation - CORRECT ANSWER✔✔- force = mass * acceleration
The force of gravity by the sun keeps the planets in orbit around it, but how do the planets
affect the sun? - CORRECT ANSWER✔✔- they exert an equally strong pull on the sun,
causing it to move slightly
If i apply exactly the same amount of force to a pebble and a boulder what will happen? -
CORRECT ANSWER✔✔- the pebble will move faster
weight formula - CORRECT ANSWER✔✔- weight = mass x gravity
how high are you jumping at 2x earth's mass? - CORRECT ANSWER✔✔- half as high
since the jump height is half as high what does that tell us about the gravity? - CORRECT
ANSWER✔✔- gravity is twice as much
gravity equation - CORRECT ANSWER✔✔- gravity = m/r^2
, what causes seasons - CORRECT ANSWER✔✔- the planet's tilt with respect to plane in
which they orbit the sun
equinox - CORRECT ANSWER✔✔- 12 hours of day, 12 hours of night
What day do the equinoxes fall on and what months - CORRECT ANSWER✔✔- the 21st of
September and March
solstice - CORRECT ANSWER✔✔- longest and shortest days of the year
day and month each solstice falls on - CORRECT ANSWER✔✔- December 21st, June 21st
two moons of mars - CORRECT ANSWER✔✔- Phobos and deimos
solar eclipse - CORRECT ANSWER✔✔- Occurs during moon's 'new' phase when moon lies
in direct line between sun and earth
lunar eclipse - CORRECT ANSWER✔✔- Occurs when moons is opposite the sun from
earth or during the full moon phase
moons phases in order, counter-clockwise - CORRECT ANSWER✔✔- new moon →
waxing crescent → first quarter moon → waxing gibbous → full moon → waning gibbous →
last quarter moon → waning crescent → new moon (repeat)
how many phases a week does the moon go through - CORRECT ANSWER✔✔- approx 2
how much is the moon illuminated at all times - CORRECT ANSWER✔✔- 50%
waning - CORRECT ANSWER✔✔- less illuminated in coming days
waxing - CORRECT ANSWER✔✔- more illuminated in coming days
