earth subsyste

Question 1

necessary requirements for life

Answer 1

water and heat

Question 2

first photosynthetic organism

Answer 2

cyanobacteria

Question 3

possible sources of water

Answer 3

volcanism and icy meteors

Question 4

what makes the earth habitable

Answer 4

earths distance form the sun and holds water in its liquid form

Question 5

sources of heat

Answer 5

earth and sun

Question 6

time it takes to turn around its axis (24 hours) earth’s tilt 23.5 degrees

Answer 6

rotation

Question 7

time it takes to turn around its elliptical orbit (365 1/4 days)

Answer 7

Revolution

Question 8

Why is earth a closed system

Answer 8

amount of matter is fixed

Changes within one subsystem eventually causes changes in others

Question 9

Solid Earth

Answer 9

Geosphere

Question 10

loose particles of rocks that are found blanketing the surface of earth

Answer 10

regolith

Question 11

Solid and rigid outer layer that includes the crust and the uppermost part of the mantle

Answer 11

Lithosphere

Question 12

Solid but mobile part of mantle

Answer 12

Asthenosphere

Question 13

totality of earth’s water including the cryosphere

Answer 13

hydrosphere

Question 14

Mixture of gases that surround the planet

Answer 14

Atmosphere

Question 15

Amount of nitrogen

Answer 15

78%

Question 16

amount of oxygen

Answer 16

21%

Question 17

amount of argon

Answer 17

0.9%

Question 18

mixture of gases present in the atmosphere

Answer 18

nitrogen
Oxygen
Argon
Carbon Dioxide
Water Vapor

Question 19

lowest layer of the atmosphere, where weather takes place

Answer 19

troposhere

Question 20

Where Ozone layer ids found , airplane is in this layer

Answer 20

Statosphere

Question 21

Coldest layer, where meteors are present

Answer 21

Mesosphere

Question 22

Ionosphere, satellite is put at this level

Answer 22

Thermosphere

Question 23

6,200 miles from the ground

Answer 23

Exosphere

Question 24

All living organisms on the planet, even organic matter that has not yet decomposed

Answer 24

Biosphere

Question 25

pathways by which chemical substances move through both biotic(living) and abiotic (non-living) components of the earth

Answer 25

Biogeochemical cycle