Earth sci lesson 2

Question 1

Theory in Early Earth Formation

Answer 1

core accretion theory

Question 2

Necessary Requirements for Life

Answer 2

fire, earth, water, air

Question 3

first photosynthetic organism thrived

Answer 3

cyanobacteria

Question 4

earth’s ____ makes it a habitable zone allowing it to hold water in its liquid form

Answer 4

distance

Question 5

2 sources of water

Answer 5

volcanism, icy meteors

Question 6

2 sources of heat

Answer 6

earth, sun

Question 7

the heat from the earth is caused of ____ from radioactive decay of materials in the core and mantle and extruded via tectonic activities

Answer 7

radiogenic heat

Question 8

the heat from the sun are trapped by earth’s ___

Answer 8

atmosphere

Question 9

time it takes to turn around its axis

Answer 9

rotation

Question 10

degrees of the earth’s tilt

Answer 10

23.5

Question 11

time it takes to turn around its elliptical orbit

Answer 11

revolution

Question 12

how many days does earth revolve

Answer 12

365 1/4

Question 13

caused temporary changes in global surface temp. and forever changed the landscape of central luzon

Answer 13

1991 pinatubo eruption

Question 14

earth as a closed system reason 1

Answer 14

amount of matter is fixed

Question 15

earth as a closed system reason 2

Answer 15

changes within one subsystem eventually causes changes in others

Question 16

*solid earth *composed of naturally occurring aggregate of minerals, organic material and natural gas called rocks, and regolith *geologic landforms

Answer 16

geosphere

Question 17

loose particles of rocks found blanketing in earth’s surface

Answer 17

regolith

Question 18

solid & rigid outer layer that includes crust and uppermost part of mantle

Answer 18

lithosphere

Question 19

solid but mobile part of mantle

Answer 19

asthenosphere

Question 20

• totality of earth’s water, including cryosphere
• earth contains water in 3 phases
• water in atm is considered separate from _____

Answer 20

hydrosphere

Question 21

permanently frozen parts

Answer 21

cryosphere

Question 22

• mixture of gases that surrounded the planet (nitrogen, oxygen, argon, C02, water vapor)
• extends to about 10000 km above earth

Answer 22

atmosphere

Question 23

nitrogen percentage

Answer 23

78

Question 24

oxygen percentage

Answer 24

21

Question 25

argon percentage

Answer 25

0.9

Question 26

• lowest layer of earth
• all of our weather takes place
• high content of oxygen

Answer 26

troposphere

Question 27

• ozone layer is found (O3) absorbing UV radiation
• getting hotter
• contains less air
• airplane can be found here

Answer 27

stratosphere

Question 28

• no air is found
• meteors are present
• coldest layer

Answer 28

mesosphere

Question 29

• satellite is present
• temp is hot
• ionization takes place
• space craft and aurora borealis is found

Answer 29

thermosphere

Question 30

6200 miles from ground

Answer 30

exosphere

Question 31

400 miles from ground

Answer 31

thermosphere

Question 32

50 miles from ground

Answer 32

mesosphere

Question 33

30-35 miles from ground

Answer 33

stratosphere

Question 34

4-10 miles from ground

Answer 34

troposphere

Question 35

all living organisms that has not yet decomposed

Answer 35

biosphere

Question 36

biosphere is interaction between different subsystems is most _______

Answer 36

dynamic

Question 37

pathways by which chemical substances move through biotic and abiotic components of earth

Answer 37

biogeochemical cycles

Question 38

other term for biogeochemical cycless

Answer 38

nutrient cycles

Question 39

how elements, chemical compounds, other forms of matter are passed down from one organism to another, from one part of biosphere to another

Answer 39

biogeochemical cycles

Question 40

everything is _________

Answer 40

interrelated