CHAPTER 8: THE DESIGNED WORLD
A. AGRICULTURE
K-2
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Most food comes from farms either directly as crops
or as the...
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Part of a crop may be lost to pests or spoilage.
-
A crop that is fine when harvested may spoil before
it gets to consumers.
-
Machines improve what people get from crops by helping
in...
3-5
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Some plant varieties and animal breeds have more
desirable...
-
The damage to crops caused by rodents, weeds, and
insects can be...
-
Heating, salting, smoking, drying, cooling, and airtight
packaging are...
-
Modern technology has increased the efficiency of
agriculture so that...
-
Places too cold or dry to grow certain crops can
obtain food from...
6-8
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Early in human history, there was an agricultural
revolution in which...
-
People control the characteristics of plants and
animals they raise by...
-
In agriculture, as in all technologies, there are
always trade-offs to be...
-
Many people work to bring food, fiber, and fuel to
U.S. markets. With...
9-12
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New varieties of farm plants and animals have been
engineered by...
-
Government sometimes intervenes in matching agricultural
supply to...
-
Agricultural technology requires trade-offs between
increased...
B. MATERIALS AND MANUFACTURING
K-2
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Some kinds of materials are better than others for
making any...
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Several steps are usually involved in making things.
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Tools are used to help make things, and some things
cannot be made at...
-
Some materials can be used over again.
3-5
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Naturally occurring materials such as wood, clay,
cotton, and animal...
-
Through science and technology, a wide variety of
materials that do...
-
Discarded products contribute to the problem of waste
disposal....
-
Through mass production, the time required to make
a product and its...
6-8
-
The choice of materials for a job depends on their
properties and on...
-
Manufacturing usually involves a series of steps,
such as designing a...
-
Modern technology reduces manufacturing costs, produces
more...
-
Automation, including the use of robots, has changed
the nature of...
9-12
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Manufacturing processes have been changed by improved
tools and...
-
Waste management includes considerations of quantity,
safety,...
-
Scientific research identifies new materials and
new uses of known...
-
Increased knowledge of the molecular structure of
materials helps in...
C. ENERGY SOURCES AND USE
D. COMMUNICATION
E. INFORMATION PROCESSING
F. HEALTH TECHNOLOGY
