chapter 29

Question 1

what are two factors that affect gravitational stream

Answer 1

the mass and distance

Question 2

which diameter is longer pole to pole or equator

Answer 2

equator

Question 3

what does the magnetic field protect earth from

Answer 3

solar flares

Question 4

the south magnetic pole is located where

Answer 4

northern hemisphere

Question 5

what degree is the earth tilted at

Answer 5

11.7 degrees

Question 6

do the magnetic poles reverse

Answer 6

yes

Question 7

what are the large scale reversals called

Answer 7

magnetic reversals

Question 8

how often do magnetic reversals occur

Answer 8

200,000 years

Question 9

when was the last solar reversal

Answer 9

780,000 years ago

Question 10

what part of the magnetic field deflects harmful radiation

Answer 10

the magnetosphere

Question 11

what are the northern/southern lights called

Answer 11

aurora borealis

aurora australis

Question 12

how are the auroras created

Answer 12

electrically charged particles collide with atoms in the atmosphere and emit lights

Question 13

what month is earth closest to the sun

Answer 13

january (147 million km)

Question 14

what month are we farthest away form the sun

Answer 14

july (152 million km)

Question 15

rotation is perpendicular to the line drawn from the center of Earth to the center of the sun

Answer 15

equinox

Question 16

rotational axis is tilted directly toward the sun or away form the sun

Answer 16

solstice

Question 17

as the plane of earth’s orbit around the sun

Answer 17

ecliptic

Question 18

the motion of earth in an elliptical orbit around the sun

Answer 18

revolutions

Question 19

the spinning of earth on its axis

Answer 19

rotation

Question 20

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

Answer 20

time zone

Question 21

who devised a method of timekeeping around 3000 b.c.

Answer 21

Babylonians

Question 22

what was the symbol for degree taken from

Answer 22

sun

Question 23

how many degrees does the earth spin in one day

Answer 23

360

Question 24

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

Answer 24

24

Question 25

how many degrees does earth spin in one hour

Answer 25

15

Question 26

what direction does the sun rise

Answer 26

east

Question 27

what direction does the sun set

Answer 27

west

Question 28

true or false all time zones are the exact same size

Answer 28

false they move around cities states and countries boarders

Question 29

how many time zones are there in the world

Answer 29

24

Question 30

which direction do you move to add hours to time

Answer 30

east

Question 31

which direction do you move to subtract hours from the time

Answer 31

west

Question 32

how many time zones are in the united states

Answer 32

6

Question 33

what are the names of the time zones

Answer 33

central mountain pacific eastern Alaska Hawaii

Question 34

what is a solar day

Answer 34

noon one day until noon the nest day

Question 35

what is a sidereal day

Answer 35

rotation around a different star

Question 36

what are the two main reasons for seasons

Question 37

which two seasons have solstice

Question 38

which month is the winter solstice

Question 39

which month has the summer solstice

Question 40

which two seasons are equinox

Question 41

which month is the spring equinox

Question 42

which month is the fall equinox

Question 43

when is the longest day of the year

Question 44

when is the shortest day of the year

Question 45

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

Question 46

lunar eclipse

Answer 46

occurs when earth passes between the sun and the moon

Question 47

solar eclipse

Answer 47

occurs when the moon moves directly between the sun and the earth

Question 48

tide

Answer 48

is the rise or fall in the ocean's surface

Question 49

moon phase

Answer 49

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

Question 50

maria

Answer 50

are dark colored flat lava filled regions on the moon's surface

Question 51

regloith

Answer 51

is a layer of dusty lunar material produced by collisions

Question 52

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

Answer 52

27.3

Question 53

a complete lunar phase cycle takes 29.5 days what is it called

Answer 53

`synodic month

Question 54

do we ever see the back side of the moon

Answer 54

no

Question 55

what causes a tide to rise or fall

Answer 55

gravitational pulls of sun and moon

Question 56

what is the rise of sea level called

Answer 56

high tide

Question 57

which is farther from earth the sun or the moon

Answer 57

sun

Question 58

does the moon or sun cause a greater affect on tides

Answer 58

moon

Question 59

how are they aligned in leap tide

Answer 59

sun eartyh moon

Question 60

how are they alinged in neap tide

Answer 60

sun earth moon

Question 61

what dies the phase of the moon you see depend on

Answer 61

the earyh

Question 62

when does a new moon occur

Answer 62

earhh and the sun

Question 63

how many phases of the moon are there

Answer 63

8

Question 64

what is the def of waxing moon

Answer 64

more lightend up

Question 65

what is the def of waning moon

Answer 65

less light

Question 66

what are the moon pashes names

Answer 66

``` new moom waxing cresent first quarter waxing gibbous full moon wanning gibbous 3rd waxing crecengt ```

Question 67

where is the word month derived from

Answer 67

latin

Question 68

what is the alingment in a solar eclipse

Answer 68

sun moon earth

Question 69

what is the alignment in a lunar eclipse

Answer 69

moon earth sun

Question 70

what is an umbra

Answer 70

total eclipse

Question 71

whayt is a penumbra

Answer 71

area of particle eclipse

Question 72

how are the depressions on the moon formed

Answer 72

craters

Question 73

are there mountains

Answer 73

yes

Question 74

which side of the moon is thicker

Answer 74

far side

Question 75

is the mantle solid or liquid

Answer 75

solid

Question 76

what did the clemintine spacecraft do

Answer 76

how thick it was | and mineral content

Question 77

what did the lunar prospector do

Answer 77

took pictures noticed water and ice on moon iron rich core

Question 78

what is the giant impact theory