Question 1

Which means do scientists use to reduce errors in their observations and measurements?

Accepted Answer

A)  taking measurement only once and using that value 
B)  testing measuring devices against known samples 
C)  testing measuring devices against unknown samples 
D)  using procedures that are not standardized 
A)  taking measurement only once and using that value 
B)  testing measuring devices against known samples 
C)  testing measuring devices against unknown samples 
D)  using procedures that are not standardized

Question 2

Developed countries tend to have high-throughput economies.

Accepted Answer

A) True 
 B)False

Question 3

What quality of energy is available after any heat-to-work conversion is performed?

Accepted Answer

A)  The energy will always be less than the initial energy quality. 
B)  The energy will always be equal to the initial energy quality. 
C)  The energy will always be equal to or greater than the initial energy quality. 
D)  The energy will always be greater than the initial energy quality. 
A)  The energy will always be less than the initial energy quality. 
B)  The energy will always be equal to the initial energy quality. 
C)  The energy will always be equal to or greater than the initial energy quality. 
D)  The energy will always be greater than the initial energy quality.

Question 4

The time needed for one-half of the nuclei in a given quantity of a radioisotope to decay and emit their radiation and form a different isotope is called _________________________.

Accepted Answer

The answer of The time needed for one-half of the...

Question 5

In a chemical change,matter may be moved by kinetic energy.

Accepted Answer

A) True 
 B)False

Question 6

____________________ reasoning involves using logic to arrive at a specific conclusion based on a generalization or premise.

Accepted Answer

The answer of ____________________ reasoning involves using logic to arrive...

Question 7

Which statement about nuclear fusion is correct?

Accepted Answer

A)  High-temperature fusion is much harder to initiate but releases more energy per unit of fuel than fission. 
B)  During nuclear fusion, more than two nuclei of isotopes of light elements are forced together at high temperatures until they fuse and absorb energy. 
C)  Controlled nuclear fusion reactors are being tested in California and will probably be ready to come online by the year 2030. 
D)  Fusion is the source of energy in the soil. 
A)  High-temperature fusion is much harder to initiate but releases more energy per unit of fuel than fission. 
B)  During nuclear fusion, more than two nuclei of isotopes of light elements are forced together at high temperatures until they fuse and absorb energy. 
C)  Controlled nuclear fusion reactors are being tested in California and will probably be ready to come online by the year 2030. 
D)  Fusion is the source of energy in the soil.

Question 8

Which source is best to consult in order to learn more about what scientists generally agree on?

Accepted Answer

A)  Popular Science 
B)  CNN 
C)  newspaper headlines 
D)  Canadian Journal of Zoology publications 
A)  Popular Science 
B)  CNN 
C)  newspaper headlines 
D)  Canadian Journal of Zoology publications

Question 9

What is one example of a negative feedback loop?

Accepted Answer

A)  a thermostat that maintains a certain temperature in your house 
B)  sweating to heat your body up during and after vigorous exercise 
C)  exponential population growth 
D)  the accelerating gain of heat as a pan of hot water is removed from the stove 
A)  a thermostat that maintains a certain temperature in your house 
B)  sweating to heat your body up during and after vigorous exercise 
C)  exponential population growth 
D)  the accelerating gain of heat as a pan of hot water is removed from the stove

Question 10

A solution with a pH of 3 is 100 times more acidic than a solution with a pH of 4.

Accepted Answer

A) True 
 B)False

Question 11

Which comparison of nuclear fission and nuclear fusion is correct?

Accepted Answer

A)  Nuclear fusion produces less energy than nuclear fission. 
B)  Nuclear fusion is harder to initiate than nuclear fission. 
C)  Nuclear fusion occurs in nuclear power plants, whereas nuclear fission occurs in the sun. 
D)  Nuclear fusion occurs in atomic bombs, whereas nuclear fission occurs in hydrogen bombs. 
A)  Nuclear fusion produces less energy than nuclear fission. 
B)  Nuclear fusion is harder to initiate than nuclear fission. 
C)  Nuclear fusion occurs in nuclear power plants, whereas nuclear fission occurs in the sun. 
D)  Nuclear fusion occurs in atomic bombs, whereas nuclear fission occurs in hydrogen bombs.

Question 12

What is required to discover and formulate a scientific law?

Accepted Answer

A)  fabrication 
B)  lack of knowledge 
C)  fairy tales 
D)  use of scientific methods 
A)  fabrication 
B)  lack of knowledge 
C)  fairy tales 
D)  use of scientific methods

Question 13

Before an interpretation of an observation can become a theory,it must first be a testable ______________________________.

Accepted Answer

scientific

Question 14

Which source of iron would be of the highest quality?

Accepted Answer

A)  deposits on the ocean floor 
B)  a large, scrap metal junkyard 
C)  a field of spinach 
D)  a 0.5-mile deep deposit 
A)  deposits on the ocean floor 
B)  a large, scrap metal junkyard 
C)  a field of spinach 
D)  a 0.5-mile deep deposit

Question 15

What is given off by natural radioactivity?

Accepted Answer

A)  delta rays 
B)  theta particles 
C)  epsilon particles 
D)  gamma rays 
A)  delta rays 
B)  theta particles 
C)  epsilon particles 
D)  gamma rays

Question 16

What uses low-quality energy?

Accepted Answer

A)  electric motors 
B)  furnaces for space heating 
C)  gas combustion engines 
D)  stoves for cooking 
A)  electric motors 
B)  furnaces for space heating 
C)  gas combustion engines 
D)  stoves for cooking

Question 17

Which statement is most likely to be said by a scientist?

Accepted Answer

A)  I'd like to offer an alternative hypothesis to explain the data. 
B)  Perhaps you are right. But I think the data more strongly support a different view. 
C)  That seems a plausible model of the system we are studying. 
D)  We should design an experiment to test this hypothesis. 
A)  I'd like to offer an alternative hypothesis to explain the data. 
B)  Perhaps you are right. But I think the data more strongly support a different view. 
C)  That seems a plausible model of the system we are studying. 
D)  We should design an experiment to test this hypothesis.

Question 18

What is one example of a positive feedback loop?

Accepted Answer

A)  a temperature-regulating system 
B)  compound interest in a savings account 
C)  recycling aluminum cans 
D)  a thermostat 
A)  a temperature-regulating system 
B)  compound interest in a savings account 
C)  recycling aluminum cans 
D)  a thermostat

Question 19

A(n)____________________ occurs when ice melts into a liquid.

Accepted Answer

The answer of A(n)____________________ occurs when ice melts into a...

Question 20

Which statement is the best definition of matter?

Accepted Answer

A)  Matter has the capacity to change in form. 
B)  Matter has the ability to produce change. 
C)  Matter has mass and occupies space. 
D)  Matter has the capacity to do work. 
A)  Matter has the capacity to change in form. 
B)  Matter has the ability to produce change. 
C)  Matter has mass and occupies space. 
D)  Matter has the capacity to do work.

Exam 3: Science, systems, matter, and Energy

Which means do scientists use to reduce errors in their observations and measurements?

Developed countries tend to have high-throughput economies.

What quality of energy is available after any heat-to-work conversion is performed?

The time needed for one-half of the nuclei in a given quantity of a radioisotope to decay and emit their radiation and form a different isotope is called _________________________.

In a chemical change,matter may be moved by kinetic energy.

____________________ reasoning involves using logic to arrive at a specific conclusion based on a generalization or premise.

Which statement about nuclear fusion is correct?

Which source is best to consult in order to learn more about what scientists generally agree on?

What is one example of a negative feedback loop?

A solution with a pH of 3 is 100 times more acidic than a solution with a pH of 4.

Which comparison of nuclear fission and nuclear fusion is correct?

What is required to discover and formulate a scientific law?

Before an interpretation of an observation can become a theory,it must first be a testable ______________________________.

Which source of iron would be of the highest quality?

What is given off by natural radioactivity?

What uses low-quality energy?

Which statement is most likely to be said by a scientist?

What is one example of a positive feedback loop?

A(n)____________________ occurs when ice melts into a liquid.

Which statement is the best definition of matter?

Environmental Problems: an Introduction and Overview

Environmental History: Learning From the Past

Ecosystems: What Are They, and How Do They Work

Evolution and Biodiversity

Climate and Terrestrial Biodiversity

Aquatic Biodiversity

Community Ecology

Population Ecology

Applying Population Ecology: the Human Population

Sustaining Terrestrial Biodiversity: Managing and Protecting Ecosystems

Sustaining Biodiversity: the Species Approach

Sustaining Aquatic Biodiversity

Food and Soil Resources

Water Resources

Geology and Nonrenewable Mineral Resources

Nonrenewable Energy Resources

Energy Efficiency and Renewable Energy

Risk,toxicology,and Human Health

Air Pollution

Climate Change and Ozone Loss

Water Pollution

Pest Management

Solid and Hazardous Waste

Sustainable Cities

Economics, environment, and Sustainability

Politics, environment, and Sustainability

Environmental World-views, ethics, and Sustainability

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