Earth

Question 1

why is earth well suited for life

Answer 1

• right size allowing for atmosphere and right gases
• right temperature allowing for habitability
• right rotation
• geological activity
• right moon

Question 2

effects of earth and moon

Answer 2

stability of axis (seasons, no short term changes), tides, eclipses, etc.

Question 3

rotation time of earth

Answer 3

23 hours and 56 minutes

Question 4

earth strucutre

Answer 4

atmosphere - crust - mantle - outer core - inner core

Question 5

earths atmosphere layers

Answer 5

troposphere - stratosphere - mesosphere - thermosphere

Question 6

which atmospheric layer holds ozone layer

Answer 6

stratosphere

Question 7

which atmospheric layer does the ionosphere and magnetosphere begin

Answer 7

thermosphere

Question 8

explain 3 phases of earths atmosphere

Answer 8

early - primarily hydrogen and helium from formation of solar system

next-phase - primary carbon dioxide from released interior by volcanoes

current - 4 to 1 mixture of nitrogen and oxygen by biological activity.

Question 9

what is ozone layer made of

Answer 9

O3

Question 10

function of ozone layer

Answer 10

protects earth from hazardoud UV from Sun

Question 11

threat to ozone layer

Answer 11

destroyable by synthetic CFCs

Question 12

how does ozone layer heal

Answer 12

slowly replenishes self by photoinduced O-O2 reactions

Question 13

was ozone layer always in atmosphere, why

Answer 13

no, had to form before early life could move from ocean to dry land

Question 14

greenhouse effect

Answer 14

sunlight not reflected back by the clouds reached earths surface, warming it up.

infrared radiation reemitted from earths surface then partially absorbed by carbon dioxide and other greenhouse gases like water vapor in earths atmosphere

air temperature rises

Question 15

what is magentosphere

Answer 15

distribution of earths magnetic field around itself

Question 16

magnetosphere function

Answer 16

shields us from solar wind (stream of charged particles from Sun)

Question 17

2 main phenomena of solar wind interaction with magnetosphere

Answer 17

1) disruption of telecommunications when solar eruptions are particularly strong
2) aurora borealis/northern lights; light emitted when the solar particles interact with air molecules (different molecules/height in atmosphere = different color)