chapter 29.2 Flashcards

1
Q

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

A

time zone

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2
Q

the spinning of earth on its axis

A

rotation

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3
Q

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

A

revolution

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4
Q

defend as the plane of earth’s orbit around the sun

A

ecliptic

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5
Q

when earth’s rotational axis titled directly toward the sun or away from the sun

A

solstice

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6
Q

earth’s rotational axis is perpendicular to a line drawn from the center of earth to the center of the sun

A

equinox

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7
Q

who devised a method of timekeeping around 3000 B.C?

A

babalonions

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8
Q

what was the symbol for degree taken from?

A

taken from the sun

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9
Q

how many degrees does the earth spin in one day?

A

360

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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 degrees does the earth spin in one hour

A

15 hours

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12
Q

what direction does the sun rise

A

east

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13
Q

what direction does the sun set

A

west

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14
Q

true or false.all time zones are the exact same size

A

false

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15
Q

how many time zones are there in the world

A
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16
Q

which direction do you move add hours to the time

17
Q

which direction do you move to subtract hours from the time

18
Q

how many time zones are there in the US

19
Q

what are the names of time zones

20
Q

what is solar day?

21
Q

what is a sidereal day

22
Q

which are the two main reasons for seasons

A

revolutions

23
Q

2 seasons have a solstice

A

winter & summer

24
Q

which month is the summer solstice

A

december 21st

25
winter solstice
26
two seasons of equinoxes
27
month is the spring equinox
28
month is the fall equinox
semptember 21st
29
longest day of the year
june 21st
30
shortest day of the year
december 21st
31
when are the days almost 12 hours of day and 12 hours at night