Increase in earth's average temperature over time.
The causes of Global Warming
include an increase in the
atmospheric concentration of
____ (i.e. carbon
____ is produced
anytime we burn fossil fuels (coal,
oil, natural gas). With increased
usage of fossil fuels, these concentrations in the
earth’s atmosphere are increasing
The ____ work like a
green house to keep heat (reflected
infrared radiation) from escaping
from the earth’s atmosphere.
Since 1850 the larger glaciers in
the park have lost two-thirds
their size, and the total park
area covered by glaciers has
lost three-fourths its size. Many
smaller glaciers have
disappeared completely. Most
experts believe that with
current warming rates, there
will be no glaciers in Glacier
National Park by ____. Even
with no additional warming,
the glaciers are likely to
disappear by ____.
Glacier National Park has about 50 small glaciers, __ of
which are still large enough to be officially classified as
glaciers under ____ requirements.
Studies indicate that glacial retreat began about 1850
when there were more than 150 glaciers in Glacier NP.
These glaciers are direct remnants from an ice age that
ended about 11,000 years ago. Because of their relatively
low elevations and inland location, the park’s glaciers are
highly sensitive to ____.
37, U.S. Geological Survey, global climate change.
the additional trapping of heat in the
atmosphere by gases that absorb infrared radiation.
A type of air pollution that includes acid that falls from the atmosphere as precipitation or as dry particles. It is produced when sulfur diozide and nitrogen ozides mix with water in the atmosphere to produce sulfuric acid, and nitric acid.
Effects of acid deposition:
1. kills aquatic organisms
2. causes forest decline
3. corrodes metal products
4. erodes stone, including famous statuary.
The pH scale is a logarithmic scale where a pH of 3 is ___x more acidic than a pH 4 and ___x more acidic than a pH of 5.
pH scales of: distilled water __
tomato juice __
lemon juice __
normal rain __
7, 4, 3, 2, 5-6 (acid rain in NE 4-3 and even lower)