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Astro 1 exam 1 Penn State questions with correct answers
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Astro 1 exam 1 Penn State questionswith 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
Astro 1 exam 1 Penn State questions with correct answers
, 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%
Astro 1 exam 1 Penn State questions with correct answers
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