test 1 Flashcards
when does an eclipse occur
when one object is in the shadow of another object
lunar eclipse
the moon is in earth’s shadow
solar eclipse
the moon is making a shadow on earth
what creates tides
the gravitational pull of the moon
spring tide
sun and moon pull the water in the same direction
creates higher high tides and lower low tides
occurs during new and full moons
neap tide
sun and moon pull the water in the opposite direction
creates lower high tides and higher low tides
occurs during 1st and 3rd quarter moons
most common theory about the moon formation is
GIANT IMPACT THEORY:
during the big bang the moon was created by the debris of a huge planet knocking into earth
order of moon phases
new - waxing crescent - 1st quarter - waxing gibbous - full - waning gibbous - 3rd quarter - waning crescent
altitude
degrees above horizon
how many degrees is the hand
10
magnitude
higher mag = dimmer
lower mag = brighter
which way do earth and moon rotate AND revolve
counterclockwise
What force holds objects in orbit?
gravitational pull
What is the cause of gravity?
mass
what is an AU
astronomical unit = relative distance between sun and earth