29.2 Flashcards

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1
Q

time zone

A

is an area 15 degrees wide in which the time is the same

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2
Q

rotation

A

spinning of earth on its axis an imaginary line drawn from earths north pole to south pole

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3
Q

revolution

A

is the motion of earth in an elliptical orbit around the sun

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4
Q

ecliptic

A

defined as the plane of earths orbit around the sun

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5
Q

solstice

A

occurs when the earths rotational axis is tilted directly towered the sun or away from the sun

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6
Q

equinox

A

earths rotational axis is perpendicular to a line drawn from the center of earths of thr sun.

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7
Q

whi devised a methodof timekeeping around 3000 bc

A

babiloniens

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8
Q

what was the symbol for degree taken from

A

Babylonian symbol from sun

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9
Q

how many degrees does the earth spin in a day

A

360 degrees

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10
Q

how many hours does it take the earth to make one full rotation

A

24 hours

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11
Q

how many derees does the earth spin in an hour

A

15

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12
Q

whaqt direction does the sun ride andf set

A

east west

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13
Q

t or d all the time zones are the exact same size

A

f bc they are modified tol fit around cities, states and country borders, and other key sites

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14
Q

how many time zones are there in the world

A

24

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15
Q

which direction do you do you move to add hours on the clock- subtract

A

east top add an hour

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16
Q

how many time zones are there in the us

A

6

17
Q

what are the nemes of the time zones

A

Atlantic/alas kin Pacific mortician central eastern time zone

18
Q

whagt is a solor day

A

sun one day at noon next say

19
Q

what is a sidereal day

A

c a crtian star evn it comes over horizen

20
Q

what are two main reasons for seasons

A

reilotion tilt of the axis

21
Q

which 2 seasons have a solstice

A

winter summer

22
Q

which month is the summer solcist

A

june 21

23
Q

which season is the winter soloist

A

december

24
Q

which two seasons are equinox

A

spring fall

25
Q

which month is the fall equinox

A

march

26
Q

when is the longest day of the year

A

june 21

27
Q

when is the shortest day of the year

A

winter december 21

28
Q

when re the days almost 12 hours of day and 12 hours of night

A

spring and fall equnox
march 22
sep 22-23

29
Q

tide

A

a rise or fall in the oceans surface

30
Q

moon phase

A

reflects the change in appearance of the moon as seen from earth

31
Q

llunar aclipse

A

occurs when earth passes between the sun and the moon and casts a shadow on the moon

32
Q

maria

A

are the dark colored flat lava filled region on the moons surface

33
Q

regonlith

A

is a layer of dusty lunar material produced by collisions between asteroids and comets and the moon

34
Q

solor eclips

A

moon between sun and earth