ch 29.2

Question 1

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

Answer 1

Babylonians

Question 2

What was the symbol for degree taken from?

Answer 2

babylonians symbol

Question 3

How many degrees does the earth spin in one day?

Answer 3

360 degrees

Question 4

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

Answer 4

24 hours

Question 5

How many degrees does the earth spin in one hour?

Answer 5

15 degrees

Question 6

What direction does the sun set?

Answer 6

west

Question 7

What direction does the sun rise?

Answer 7

east

Question 8

True or False. All time zones are the exact same size?

Answer 8

False

Question 9

How many time zones are there in the world?

Answer 9

24

Question 10

Which direction do you move to add hours to the time?

Answer 10

east

Question 11

Which direction do you move to subtract hours from the time?

Answer 11

west

Question 12

How many time zones are there in the United States?

Answer 12

6

Question 13

What are the names of the time zones?

Question 14

What is a solar day?

Answer 14

when the sun moves noon to noon

Question 15

What is sidereal day?

Answer 15

look at a star and make a full rotation back to the same star

Question 16

What are the two main reasons for seasons?

Answer 16

tilt of the earth and revolution

Question 17

Which 2 seasons have a solstice?

Question 18

Which month is the winter solstice?

Question 19

Which month is the summer solstice

Question 20

which two seasons are equinoxes?

Question 21

which month is the fall equinox?

Question 22

which month is the spring equinox?

Question 23

when is the longest day of the year?

Question 24

when is the shortest day of the year?

Question 25

when are the days almost 12 hours of day and 12 hours of night?