29.1-2

Question 1

sphere

Answer 1

A round, 3 dimensional object, the surface of which is the same distance from the center in all directions

Question 2

elipse

Answer 2

an elongated, closed curve with two foci

Question 3

is the earth a perfect sphere

Answer 3

no, its wider than it is tall

Question 4

what are two factors that affect gravitational strengh

Answer 4

the mass and distance between an object

Question 5

is the pole to pole diameter or the equator longer

Answer 5

equator

Question 6

what does the magnetic field protect earth from

Answer 6

solar flares

Question 7

the south magnetic pole is located in which hemisphere

Answer 7

northern hemisphere

Question 8

what degree is earths axis tilted at

Answer 8

11.7

Question 9

does the earths magnetic poles flip

Answer 9

yes

Question 10

what is a large scale reversals called

Answer 10

magnetic reversals

Question 11

how often do magnetic reversals happen

Answer 11

200000 years

Question 12

when was the last magnetic reversal

Answer 12

780,000

Question 13

what part of the magnetic field reflects harmful radiation

Answer 13

the magnetosphere

Question 14

what are the northern and southern lights called

Answer 14

north, aurora borealis

south, aurora australis

Question 15

how are the auroras created

Answer 15

electrically charged particles collide with atoms

Question 16

in which month is earth closest to the sun

Answer 16

january

147 million km away

Question 17

which month are we farthest from the sun

Answer 17

july

152 million kilometers

Question 18

an area 15 degrees wide

Answer 18

time zone

Question 19

spinning of earth on its axis

Answer 19

rotation

Question 20

motion of earth in an elliptical orbit

Answer 20

revolution

Question 21

the plane of earths orbit around the sun

Answer 21

ecliptic

Question 22

earths rotational axis is tilted directly toward the sun or away from the sun

Answer 22

solstice

Question 23

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

Answer 23

equinox

Question 24

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

Answer 24

the babolonians

Question 25

what was the symbol for degrees taken from

Answer 25

the babalonians symbol for sun

Question 26

How many degrees does the earth spin in one day

Answer 26

360

Question 27

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

Answer 27

24

Question 28

how many degrees does the earth spin in one hour

Answer 28

15

Question 29

what direction does the sun rise

Answer 29

east

Question 30

what direction does the sun set

Answer 30

west

Question 31

true or false, all time zone are the exact same size

Answer 31

false, they are modified for city’s, states, and country borders

Question 32

how many time zones are there

Answer 32

24

Question 33

which direction do you move to add more hours to the time

Answer 33

east

Question 34

which direction do you move to subtract hours from the time

Answer 34

west

Question 35

how many time zones are in the us

Answer 35

6

Question 36

what are the names of the US time zones

Answer 36

central, mountain, eastern, pacific daylight, Alaska daylight, Hawaii,

Question 37

what is a solar day

Answer 37

sun moves from noon to noon

Question 38

what is a siderealm day

Answer 38

we look at a specific star and make a rotation to see it again

Question 39

what are the main two reasons for seasons

Question 40

which 2 seasons have a solstice

Question 41

which month is summer solstice

Question 42

what month is winter solstice

Question 43

which two season are equinoxes

Question 44

which month is spring equinox

Question 45

which month is cfall equinox

Question 46

when is the longest day of the year

Question 47

when is the shortest day of the year

Question 48

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

Answer 48

winter and summer months