7.1- Cycles and spheres

Question 1

Biosphere

Answer 1

life support system that includes all ecosystems on Earth

Question 2

atmosphere

Answer 2

layer of gases around the Earth

Question 3

lithosphere

Answer 3

outermost layer of Earth (eg. crust and upper mantle)

Question 4

hydrosphere

Answer 4

water on Earth’s surface

Question 5

biota

Answer 5

living things

Question 6

what is the atmosphere made up of

Answer 6

troposphere, stratosphere and ozone layer

Question 7

troposphere

Answer 7

lower atmosphere

Question 8

stratosphere

Answer 8

upper atmosphere

Question 9

latitude

Answer 9

closeness to Earth’s equator and poles

Question 10

ozone layer

Answer 10

region of the stratosphere that absorbs most of the sun’s ultraviolet radiation

Question 11

steps to water cycle

Answer 11

evaporation (or transpiration), vapor transport, condensation, precipitation, percolation

Question 12

carbon cycle

Answer 12

moves carbon- a life sustaining element

Question 13

steps to carbon cycle

Answer 13

respiration (or combustion), photosynthesis, respiration, decomposes

Question 14

steps to phosphorus cycle

Answer 14

weathering, absorption by plants, absorption by animals, decomposition

Question 15

steps to nitrogen cycle

Answer 15

nitrogen fixation, ammonification, nitrification, de-nitrification

Question 16

what does the biosphere consist of?

Answer 16

atmosphere, lithosphere, hydrosphere, biota