29.1

Question 1

sphere

Answer 1

a round three dimensional object the surface of which is the same distance from the center in all directions

Question 2

ellipse

Answer 2

an elongated closed curve with two foci

Question 3

is earth a perfect sphere

Answer 3

no the width is longer than the height

Question 4

what are some ancient observations to prove that earths a sphere

Answer 4

no matter where you are at objects fall straight down the shadow is the earth is always gonna have a curve if the earth was flat we would all see the same stars

Question 5

what are two factors that affect gravitational strength

Answer 5

the mass and the distance

Question 6

is the diameter pull to pull or equator

Answer 6

equator

Question 7

what do magnetic field protect earth from

Answer 7

harmful radiation from the sun

Question 8

the south ganetic pole i located in which henisphere

Answer 8

northern hemishpere

Question 9

which degrees is erths

Question 10

what is large scale reversal called

Answer 10

magnetic reversals

Answer 11

200,000 years

Question 12

when was the as magnetic reversal

Answer 12

708,000 years

Question 13

what is the part of mangetic feild defletcs harmful radiation

Answer 13

the magnetosphere

Question 14

what is the northern

Answer 14

the aurora austrialis

Question 15

how are the arura created

Question 16

in which month is earth closer to the sun

Answer 16

in january 147 million km away

Question 17

which month are we furthest from the sun

Answer 17

in july 152 million km