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Summer Solstice
- June 21st
- 1st day of summer
- the day with greatest amount of sunlight
winter solstice
- december 21st
- least amount of sunlight
vernal/spring equniox
- march 21st
- 12 hours of sun 12 hours of night
autumnal eqinox
- september 21st
- 12 hours of sun and dark
the moon rotates in

27 and a third days
the moon revolves in

29.5 days
umbra

small completely dark,inner part of a shadow
penumbra

the grayish marginal portion of a sunspot
tides

daily change in the level of the earths ocean
what causes tides

the moons gravity
the sides of the earth that is facing the moon and the oppostite side will have

hightides
lowtides occur between

hightides
tides change about every

6 hours 15 minutes
flood tide

incoming or rising tide
ebb tide

outgoing or falling tides
spring tide

tide that is higher or lower then normal tides
neap tides

tide that is not as high or low as normal tides
waning gibbous
- if lite on left side its waning
- more then half but not full moon
last quarter
- light on left side
- half is light
waning crescent
- left side lit
- after this goes back to new moon
one side of the moon always faces the earth true or false

true
first moon landing
last moon landing
- july 20 1969
- 1972
largest crater on moon

copernicus
where did the astrounuts land

the sea of tranquility
perigee
- the point of its orbit closest to the earth
- (350,000 kms away)
apogee
- the point of its orbit that is farthest from earth
- (400,000 kms away)
the moon moves

east
waxing crescent

right side lit
first quarter

right side half is lit
waxing gibbous
- right side is lite
- almost full moon
full moon

moon aooears fully lit to us
lunar eclipse
- earth is blocking the moon
- people in nighttime can see it
solar eclipse
- the moon is casting a shadow on earth
- it they are in the umbra they see a total solar eclipse

Author

kimkrak

121943

Card Set

science

Description

test tom!

Updated

2011-12-08T22:48:09Z