Week 1: Climate Change Research单词卡 | Quizlet

98% of climate scientists have reached which conclusion:

a) the current warming trend is part of earth's normal variations in climate

b) earth is warming at an unprecedented pace, but this is not a result of human activity

c) earth is warming at an unprecedented pace as a result of human emissions of greenhouse gases

d) earth is warming, but this warming cannot be linked to atmospheric co2 levels

e) atmospheric co2 levels are increasing w/human activity, but this cannot explain current climate trends

c) earth is warming at an unprecedented pace as a result of human emissions of greenhouse gases

over the past 15 years in Davis, CA, we have relatively hot, dry summers and cool, wet winters. This statement describes:

a) weather

b) climate change

c) neither weather nor climate

d) climate

e) both weather and climate

d) climate

The northwest passage:

a) was first traced by the lewis and clark expedition

b) is a longer route than that through the panama canal

c) is sometimes open year round

d) has been sought since admiral byrd

e) is the route from europe to asia through the canadian archipelago

e) is the route from europe to asia through the canadian archipelago

The energy in a hurricane or other major storm comes from the:

a) warm surface waters of the ocean

b) cool waters from the ocean depths

c) cosmic rays

d) eye of the storm

e) coriolis force

a) warm surface waters of the ocean

Japan has suffered several nuclear disasters including:

a) hijacking of spent nuclear fuel rods by terrorists

b) meltdown of reactor 4 at the chernobyl nuclear power plant

c) atomic bomb detonations at hiroshima and nagaskai

d) radiation leak from a major medical facility

e) explosion of a japanese missle

c) atomic bomb detonations at hiroshima and nagaskai

What did revelle and suess of the scripps institute in san diego discover about co2 on earth (select all that apply):

a) most of the co2 which is released into the atmosphere will remain airborne

b) oceans release more co22 than they absorb, making them major sources of co2

c) only a small portion of the co2, which is released into the atmosphere dissolves into oceans

d) most of the radioactive co2 released during a detonation dissolves in oceans and contaminates sea life

e) oceans are the only major sink for co2 because of the large amount of co2 that dissolves into the water.

a) most of the co2 which is released into the atmosphere will remain airborne

c) only a small portion of the co2, which is released into the atmosphere dissolves into oceans

Why do atmospheric co2 concentrations rise and fall annually:

a) oceans absorb more co2 during the winter than during the summer

b) humans produce less co2 during the summer than during the winter

c) plants use more co2 for photosynthesis during the summer than during the winter

d) plants release more co2 during the summer than during the winter

e) this is a trick question - co2 concentrations do not rise and fall

c) plants use more co2 for photosynthesis during the summer than during the winter

Why are proxy measures needed to examine earth's climate history (select all that apply):

a) proxy measures are not needed and are highly unreliable

b) proxy measures are easier to interpret than direct measures of temperature

c) to evaluate climate in the distant past because weather stations have only been around for ~150 years

d) proxy measures can help us to understand how life forms are affected by climate change

e) proxy measures are more accurate than current measurement techniques.

c) to evaluate climate in the distant past because weather stations have only been around for ~150 years

d) proxy measures can help us to understand how life forms are affected by climate change

Isotopes of an element differ in:

a) the number of protons

b) the number of neutrons

c) the number of electrons

d) the charge of the atom

e) do not differ in any way measurable

b) the number of neutrons

As algae photosynthesize, they deplete the surrounding water of ___ and carbonate rock that precipitates from this water is enriched in ___:

a) 14co2, 14c

b) 12co2, 12c

c) 13co2, 12c

d) 12co2, 13c

e) 13co2, 13c

d) 12co2, 13c

As clouds drift to higher latitudes (select all that apply):

a) precipitation from the clouds becomes more depleted in heavy water

b) water vapor in the clouds becomes more depleted in heavy water

c) precipitation from the clouds becomes more enriched in heavy water

d) water vapor in the clouds becomes more enriched in heavy water

e) precipitation from and water vapor in the clouds maintain a steady ratio of heavy to light water

a) precipitation from the clouds becomes more depleted in heavy water

b) water vapor in the clouds becomes more depleted in heavy water