CD-ROMs & COMPUTER SOFTWARE

Rich, content laden resources for school or
home--the newest technology. Easy to use
and highly adaptable. Download informa-
tion, images and clipart at home for
classroom use. Save time on test prep.

EXPLORING ENVIRONMENTAL SCIENCE CD-ROM
Detailed coverage of environmental topics and concerns: the true costs of energy, nutrient cycles in the biosphere, biomes world-wide, hydrological cycle, pollution.
#CDR-1555 CD-ROM
$99.95

EXPLORING ENVIRONMENTAL SCIENCE TOPICS--CD-ROM Order #CDR-1555.........$99.95
Lab Pack of 5 Order #CDR-1556.........$199.95

Combined IBM/MAC Format

The complete resource for environmental studies.

This indispensable interactive CD-ROM provides a curriculum oriented
presentation, an instant encyclopedia, superb photographs, video clips, informative text,
printable diagrams and illustrations, and lab activities all on one CD-ROM!

This program offers a fascinating survey of environmental topics and concerns
such as the environmental costs of energy; acid rain; energy flow and the greenhouse
effect; oil spills; tundra, chaparral, desert, grassland and forest biomes; the hydrological
cycle and water pollution; and the recycling of elements in the biosphere.

Gives students instant access to an extensive library of environmental
illustrations and diagrams that supplement their textbooks.

At the end of each section are printable lab activities and tips to help make your
environmental labs and fieldtrips more successful than ever.

Recommended for use with such popular texts as Holt: Modern Biology, Chapter
53; Prentice Hall: Biology, Chapter 49, and Merrill: Biology, Dynamics of Life, Chapter 6.

CONTENT SAMPLE:

A boom that is well-placed and doing its job can hold back and collect huge amounts of
oil in a thick pool, so long as the water is calm and the weather cooperates. This boom was
placed by a bridge across an inlet, making it accessible to a tank truck. The truck, owned by a
firm that specializes in cleaning up oil spills, is pumping up the trapped oil. Eventually much of
the oil will be salvaged.

Copyright (c) MCMXCVI
*****************************************************************************************************************
FOR RELATED PROGRAMS WORTH NOTING.......see General Listings
*****************************************************************************************************************

COAL-FIRED GENERATING PLANTS--THEIR ECOLOGICAL IMPACTS Order #177.....$42.50

An analysis of the various impacts of a coal-fired electric generating plant.
Includes the effects on air and water, wildlife habitat, acid rain creation and more. An
important topic given the renewed emphasis on coal as an energy source. 20 slides and
guide.

CONTENT SAMPLE: 21604 Electric generating plants can also cause thermal pollution.
Here on the Upper Mississippi River, we see two power plants which apparently have a common
cooling water intake at the far left and share a common water discharge gate to the right of the
intake. Foam from the discharge area traces the flow of heated water downstream.

In a modern generating plant, 40% of the coal's energy is converted to electric energy,
while the remaining 60% becomes waste heat. Some of this heat goes up the chimney, but the
rest must be removed to keep the generators working. Cold water sucked from rivers, lakes or
ocean has traditionally been used to absorb this waste heat. A large plant requires so much
water, as much as 500,000 gallons per minute, that it may use a good fraction of the entire flow
of a small river. The warm discharge water causes thermal pollution by raising the temperature
of the river.

Many organisms, particularly cold-blooded ones, are especially vulnerable to changes in
temperature. Moreover, as water temperature rises, the water holds less oxygen, so organisms
may die from oxygen starvation if not from the heat itself. Heat-loving organisms cannot become
established because the output of hot water varies, decreasing to nothing when the plant shuts
down.

Besides the problem of thermal pollution, there are also the harmful effects on fish and
other creatures that are sucked through the plant's cooling system. The sudden temperature
rise, action of the pumps or chlorine added to prevent clogging growths of microorganisms can all
be lethal. Screens are added to filter out the larger fish, but small organisms are still trapped
and killed.

To avoid damage to aquatic ecosystems, special cooling structures are often built for
power plants. These include cooling ponds, and wet and dry cooling towers. The latter have the
least impact on the environment, but unfortunately they are by far the most expensive. Waste
heat will be turned from problem to profit if several pioneering attempts to utilize hot water from
power plants are successful. For example, the heated water has been used to speed the growth
of cultured fish and to hasten the decomposition of sewage.

REVIEWS: "An excellent analysis of the environmental impact [of] the anticipated
switch from oil to coal...timely program is highly recommended." Previews. "...thorough...
examination of the costs and risks..." Media Review. "...cogent narration and incisive slides
provide an informative and balanced account." Booklist.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

OIL SPILL Order #171........$42.50

What it was like when a tanker was sliced open by a rock in the St. Lawrence
River. Shows what it looked like and how the mess was cleaned up. Includes pictures of
the spill, oil containment booms, skimming and other clean-up operations, dead wildlife
and bird rescue. 20 slides and guide.

CONTENT SAMPLE: 27100 NEPCO 140 was carrying thick, heavy, #6 industrial oil,
almost tar-like in consistency. People with boats and vacation homes along the river found oil
instead of beauty. It fouled everything it touched.

News media across the country covered the story in detail, frightening and angering
people. Vacations were canceled, tourists stayed away, businesses lost money.

If left alone, the oil would not have simply evaporated or disappeared, it would have
marred the river and everything along it indefinitely. Man had spilled it and man had to clean it
up.

In addition to the direct cost of the clean up operation itself which cost the Federal
government approximately $8.5 million, claims for damages totaling $6 million were submitted.
One man submitted a claim for $254.72 to clean up his boat, dock and dog and to replace a rug
the dog had ruined by tracking oil on it.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

THE GREENHOUSE EFFECT Slides order #SS-0975S........$37.50

Human activities such as fossil-fuel combustion, deforestation and emission of
particulate matter into the atmosphere may be shifting the delicate climatic balance that
poses our interglacial age between ice and flood. Change is inevitable, but in which
direction, and how fast? 15 frames and guide. (Filmstrip #SS-0975F........$15.00.)

CONTENT SAMPLE: 6. The atmosphere does not allow the long-wave radiations
emitted from the earth to escape directly into space. This is called the "greenhouse effect"
because it is analogous to heat retention in a greenhouse. The glass windows of a greenhouse
readily transmit the incoming solar radiation, but some of the re-radiated long-wave radiation
cannot escape through the glass. This infrared radiation is reflected by the glass walls back into
the greenhouse where it warms the air, soil and plants to temperatures that are higher than that of
the air outside. The same principle is being incorporated into the design of solar panels for
heating water or even entire buildings. Here the efficiency is enhanced by circulating warm air
through reservoirs of rocks or waters. These reservoirs serve to trap the re-radiated infrared
radiations, much as do the soils and oceans of the earth.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

ENVIRONMENTAL HAZARDS TERM TUTOR ORDER #C-3084P.......$39.95

Concepts from our ENVIRONMENTAL HAZARDS programs!

A low cost computer utility to teach fundamentals! Popular word games eliminate
vocabulary drills. Versatile, yet easy to use and incorporates readily into any curriculum,
drawing on a HUGE glossary or your own word lists!

WORD SCAN is an interactive vocabulary-builder that anyone can play, solo or
as a team, to motivate students and enhance memory skills. WORD FIND produces an
infinite number of word puzzles. Program prints key and puzzle singly or as sets.
Because you can customize, programs appeal to all ages. Makes great pop quizzes. An
enormous time saver! Comes with two backups. IBM PC only.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


~1874-031~ Pumping up oil slick. photo by Charles R. Belinky, Ph.D.

Copyright (c) MCMXCVII Educational Images Ltd., Elmira, NY, USA. All rights reserved.

EDUCATIONAL IMAGES LTD.

P.O.Box 3456 Westside Station

Elmira, N.Y., USA, 14905-0456

Telephone: 800-527-4264; 607-732-1090

Fax: 607-732-1183

E-Mail: edimages@edimages.com