ch29

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

the Babylonian symbol for the sun

Question 3

how many degrees does earth spin in one day

Answer 3

360

Question 4

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

Answer 4

23 hours

Question 5

how many degrees does earth spin in one hour

Answer 5

15 degrees

Question 6

what direction does the sun rise

Answer 6

east

Question 7

what direction does the sun set

Answer 7

west

Question 8

true or false,all time zones are the exact sam size

Answer 8

false

Question 9

how many time zones are in the world

Answer 9

24

Question 10

what direction do you move to add hours to the time

Answer 10

clockwise

Question 11

what direction do you move to subtract hours from time

Answer 11

counter clockwise

Question 12

how many time zones are in the united states

Answer 12

6

Question 13

what are the names of those time zones

Answer 13

Central Daylight Time,Mountain Daylight Time,Mountain Standard Time,Pacific Daylight Time,Alaska Daylight Time,Hawaii-Aleutian Standard Time

Question 14

what is a solar day

Answer 14

time between successive meridian transits of the sun at a particular place.

Question 15

what is a sidereal day

Answer 15

time between two consecutive transits of the First Point of Aries

Question 16

what are the two main reasons for seasons

Answer 16

the tilt of a planet’s axis and its orbit around the sun.

Question 17

which two seasons have a solstice

Answer 17

summer,and winter

Question 18

which month has the summer solstice

Answer 18

june

Question 19

what month is the winter solstice

Answer 19

december

Question 20

which two seasons have equinoxes

Answer 20

spring,fall

Question 21

what month is the spring equinox

Answer 21

march

Question 22

what month is the fall equinox

Answer 22

september

Question 23

what is the longest day of the year

Answer 23

june,21

Question 24

what is the shortest day of the year

Answer 24

December 21

Question 25

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

Answer 25

march 21

Question 26

tide

Answer 26

the rise and fall of the oceans surface

Question 27

moon phase

Answer 27

reflects the change of the moon as seen from earth

Question 28

solar eclipse

Answer 28

when the moon moves between the sun and earth

Question 29

lunar eclipse

Answer 29

occurs when earth passes between the sun and moon

Question 30

maria

Answer 30

dark colored lava fillet regions on the moon

Question 31

regolith

Answer 31

layer of dusty lunar material produced by collisions of asteroids

Question 32

how many days does it take the moon to revolve around the earth

Answer 32

27.3 days

Question 33

a complete lunar eclipse cycle takes 29.5 days, what is it called

Answer 33

synodic month

Question 34

do we ever see the backside of the moon

Answer 34

no

Question 35

what causes the tide to rise and fall

Answer 35

gravitational force from the moon

Question 36

what is the rise of sea level called

Answer 36

relative sea level rise

Question 37

after the sea level rises how many hours does it take to drop

Answer 37

6 hours

Question 38

which is farther from the moon

Answer 38

the sun

Question 39

does the moon or sun cause greater effects on earth's tides

Answer 39

moon

Question 40

how are the sun,earth,and moon aligned for spring tide

Answer 40

when the moon and sun pull together

Question 41

how are the sun,earth,and moon aligned for a neap tide

Answer 41

when the moon and sun pull opposite of each other

Question 42

what does the phase of the moon you see depend on

Answer 42

sunlight

Question 43

when does the new moon occur

Answer 43

when earth is between the moon and sun

Question 44

how many phases of the moon are there

Answer 44

eight

Question 45

what is the definition of waxing phase

Answer 45

where the moon apears larger each night

Question 46

what is the definition of the waning phase

Answer 46

the moon is less lit

Question 47

what are the moon phase names

Answer 47

new moon,waxing crescent,1st quarter,waxing gibbous,full.waning gibbous,3rd quarter,waning crescent

Question 48

where is the word month derived from

Answer 48

an old german word meaning moon

Question 49

how is the earth,moon,and sun aligned for a solar eclipse

Answer 49

with the moon between the earth and sun

Question 50

what is an umbra

Answer 50

the shadow from the moon

Question 51

what is a penumbra

Answer 51

brighter shadow from the moon

Question 52

how is the earth,moon,and sun aligned for a lunar eclipse

Answer 52

with the earth between the moon and the sun

Question 53

how are the depressions in the moon formed

Answer 53

meteors and asteroids,and comets

Question 54

are there mountains on the moon

Answer 54

yes

Question 55

which side of the moon is thicker

Answer 55

the darak side

Question 56

is the mantle of the moon liquid or solid

Answer 56

solid

Question 57

what did the clementine spacecraft do

Answer 57

confirmed thickness of moon crust and provided mineral content of moon rocks

Question 58

what did the lunar prospect do

Answer 58

took surface pics of the moon, confirmed the moon has a small iron core,evidence of water and ice on the moon

Question 59

what is the giant impact theory

Answer 59

the moon formed when a mars sized object hit earth