Week 2: History of Earth's Climate单词卡 | Quizlet

Which of the following chemical processes does not generate chemical energy:

a) weathering of silicate rock

b) aerobic respiration

c) methane oxidation

d) anaerobic respiration

e) photosynthesis

a) weathering of silicate rock

Cyanobacteria first appeared on earth perhaps as early as:

a) 2.1 billion years ago

b) 1.0 billion years ago

c) 0.5 billion years ago

d) 4.5 billion years ago

e) 3.8 billion years ago

e) 3.8 billion years ago

Recovery from snowball or slushball earth did not require:

a) low albedo of bare ground and open water

b) volcanic emissions of co2

c) slow rock weathering

d) slow photosynthesis

e) accumulation of ozone in the upper atmosphere

e) accumulation of ozone in the upper atmosphere

The cambrian explosion refers to:

a) development of animals with soft body parts that expanded greatly during fossil formation

b) rapid separation of the supercontinent of gondwana into different land masses

c) appearance of representatives of all modern animal types during a relatively short period

d) proliferation of prokaryotic microorganisms

e) sudden oxidation of methane released from the oceans

c) appearance of representatives of all modern animal types during a relatively short period

By 570 million years ago, (select all that apply):

a) glaciers from snowball or slushball earth had retreated

b) continents were covered with forests

c) many of the major mountain ranges that exist today formed

d) seas covered more of earth's surface than today

e) ice formation was negligible because of the lack of major land masses near the poles.

a) glaciers from snowball or slushball earth had retreated

d) seas covered more of earth's surface than today

At the onset of the cambrian period, (select all that apply):

a) multicellular organisms appeared because deep tissues could conduct aerobic respiration

b) higher uv radiation limited the lifespan of most organisms to a week

c) higher ozone levels were detrimental to living organisms

d) high levels of atmospheric methane stimulated photosynthesis

e) greater biological diversity became evident in the fossil record

a) multicellular organisms appeared because deep tissues could conduct aerobic respiration

e) greater biological diversity became evident in the fossil record

Atmospheric co2 concentration during the last 600 million years was lowest:

a) 500 million years ago

b) 400 million years ago

c) 300 million years ago

d) 200 million years ago

e) 100 million years ago

c) 300 million years ago

Land plants in comparison to maritime plants have:

a) more access to water

b) less access to light

c) greater access to co2

d) more damage from predators

e) fewer parasites

c) greater access to co2

Isotopes of carbon, hydrogen, and boron serve as proxies measures for (select tall that apply):

a) species extinctions

b) photosynthetic activity

c) temperature

d) asteroid impacts

e) co2 concentrations

b) photosynthetic activity

c) temperature

e) co2 concentrations

Some ice cores, which have been extracted, (select all that apply)

a) contained supercooled water

b) are about 500,00 years old

c) were several kilometers below the surface

d) are about 5,000,000 years old

e) contained dinosaur dna

b) are about 500,00 years old

c) were several kilometers below the surface

The dome c ice core indicates how many interglacial (warm) periods occurred during the last 650 million years:

a) 3

b) 5

c) 7

d) 9

e) 1

d) 9

Corals provide proxy measures for climate because (select all that apply):

a) tidal action leaves physical marks

b) isotopes in corals vary with climatic parameters

c) they produce annual growth rings

d) corals may be several hundred years old

e) corals in the tropics do not experience seasonal variation

b) isotopes in corals vary with climatic parameters

c) they produce annual growth rings

d) corals may be several hundred years old

The size of a glacier through history is not derived from:

a) satellite images

b) photographs

c) direct measurements

d) ice cores

e) paintings

d) ice cores

Tide gauges and satellites are used to measure sea level rise. What do they indicate (select all that apply):

a) they both agree that sea level is rising more than 1.7mm per year

b) the two measurements do not agree with one another, indicating that they are not accurate

c) satellites are much less accurate than tide gauges

d) antarctic and greenland ice sheets are melting faster than previously estimated.

e) melting sea ice will greatly impact the sea level

a) they both agree that sea level is rising more than 1.7mm per year

d) antarctic and greenland ice sheets are melting faster than previously estimated.

As global temperatures increase:

a) the severity of storms will increase

b) the number of storms reaching the us will increase

c) the total number of storms will decrease

d) the total number of storms will increase

e) storms will be confined to the tropical regions of the world.

a) the severity of storms will increase

Which of the following statements is false:

a) climate and biota are linked

b) mass extinctions gave opportunities for new life forms

c) climatic shifts may extinguish many life forms

d) gaia hypothesis focuses on mass extinctions

e) organisms are sources or sinks of GHGs

d) gaia hypothesis focuses on mass extinctions

500 million years ago, earth had:

a) many glaciers near midlatitudes

b) similar co2 concentrations in the atmosphere as today

c) lower co2 concentrations in the atmosphere than today

d) this is a trick question: information is insufficient to estimate co2 concentration in the atmosphere

e) higher co2 concentrations in the atmosphere than today

e) higher co2 concentrations in the atmosphere than today