29.9 Flashcards

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1
Q

sphere

A

is a round three-dimensional object. the surrealistic m

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2
Q

ellipse

A

is an elongated, closed curve with two foci

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3
Q

what are 2 factors that effect gravitational pull

A

mass and distance

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4
Q

distabce along equater and the pull ptp nmp0uoll

A

26 miles

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5
Q

what does the magnetic feild protect earth from

A

sun rays

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6
Q

which magnetic pull if located in the hemisphere

A

south magnetic pull

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7
Q

at what degree is the actions tilted

A

11.7

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8
Q

can magnet pulls flip flop

A

yes

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9
Q

what is the large scale movement where the magnetic pulls flip

A

magnetic reversals

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10
Q

how often do magnetic reversals happen

A

200,000

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11
Q

when was the last magnetic reversal

A

700.080 years ago

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12
Q

with in earth magnetic pher what deflects harmfull radiation

A

the magnetopher

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13
Q

what are the scientific names of the souther and norther ligths

A

aurora borealis and aourora austalis

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14
Q

hoe are the aroras created

A

charges partials from the sun and collide with atoms in the atmosphere

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15
Q

what month id th eearth closesdt to the sun

A

jamuary

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16
Q

when are we farthest from the sun

A

july