Question 1

Organic compounds always contain ____________________ atoms.

Accepted Answer

carbon

Question 2

DNA molecules are coiled and shaped around proteins to form larger structures called ____________________.

Accepted Answer

chromosomes

Question 3

The law of ____________________ of matter states that whenever matter undergoes a physical or chemical change, no atoms are created or destroyed.

Accepted Answer

conservation

Question 4

Give an example of a positive feedback loop.

Accepted Answer

Examples could include: 
Hubbard Brook e

Question 5

The finding that objects fall to earth at predictable speeds is described by ____.

Accepted Answer

A)  the law of conservation of energy 
B)  the law of kinetic energy 
C)  the law of potential energy 
D)  the law of energy transformations 
E)  the law of gravity 
A)  the law of conservation of energy 
B)  the law of kinetic energy 
C)  the law of potential energy 
D)  the law of energy transformations 
E)  the law of gravity

Question 6

Why do scientists not talk about "proof" when discussing scientific research?

Accepted Answer

Scientists cannot prove or dis

Question 7

The statement that, "If land is cleared of vegetation and exposed to rain and melting snow, then the land retains less water and loses soil nutrients," is an example of a(n) ____________________.

Accepted Answer

The answer of The statement that, "If land is cleared...

Question 8

An atom's mass number is equal to the total number of ____.

Accepted Answer

A)  neutrons and isotopes 
B)  neutrons and electrons 
C)  neutrons and protons 
D)  protons, neutrons, and electrons 
E)  protons only 
A)  neutrons and isotopes 
B)  neutrons and electrons 
C)  neutrons and protons 
D)  protons, neutrons, and electrons 
E)  protons only

Question 9

Scientists use data to develop testable hypotheses, which are often written as "If… then" statements.

Accepted Answer

A) True 
 B)False

Question 10

The pH of a solution is a measure of ____________________ ions and ____________________ ions in that solution.

Accepted Answer

The answer of The pH of a solution is a...

Question 11

Recall the Bormann-Likens controlled experiment in the forested valleys of New Hampshire. Which statement best describes the effects of water flowing out of deforested areas into undisturbed areas?

Accepted Answer

A)  The amount of water flowing out of the deforested valley following rain increased by 30-40%, and soil erosion increased. 
B)  The amount of water flowing out of the deforested valley decreased by 10-20%, and soil erosion decreased. 
C)  The flow of water did not change, but soil erosion increased. 
D)  Other types of plants took the place of the trees, preventing deforestation from affecting the flow of water. 
E)  Eroding soil dammed up the river, preventing the flow of water. 
A)  The amount of water flowing out of the deforested valley following rain increased by 30-40%, and soil erosion increased. 
B)  The amount of water flowing out of the deforested valley decreased by 10-20%, and soil erosion decreased. 
C)  The flow of water did not change, but soil erosion increased. 
D)  Other types of plants took the place of the trees, preventing deforestation from affecting the flow of water. 
E)  Eroding soil dammed up the river, preventing the flow of water.

Question 12

A well-tested and widely accepted scientific hypothesis or a group of related hypotheses is called a(n) ____________________.

Accepted Answer

The answer of A well-tested and widely accepted scientific hypothesis...

Question 13

Logic and critical thinking are more important tools in science than imagination and creativity.

Accepted Answer

A) True 
 B)False

Question 14

A thermostat set to 62°F turns on the furnace when a house cools below that temperature, and shuts the furnace off when a house warms above that temperature. This is an example of a simple ____.

Accepted Answer

A)  positive feedback loop 
B)  negative feedback loop 
C)  system loop 
D)  tipping point 
E)  thermodynamic loop 
A)  positive feedback loop 
B)  negative feedback loop 
C)  system loop 
D)  tipping point 
E)  thermodynamic loop

Question 15

The Bormann-Likens study in the Hubbard Brook Experimental Forest in New Hampshire can be described as ____.

Accepted Answer

A)  a comparison of a control site with an experimental site in nature 
B)  a study using computer model simulations of a complex natural system 
C)  an experiment in which too many factors were varied to draw a conclusion from the results 
D)  missing a baseline for comparison, making it difficult to draw a conclusion from the results 
E)  an observational study that attempted not to interfere with a natural system 
A)  a comparison of a control site with an experimental site in nature 
B)  a study using computer model simulations of a complex natural system 
C)  an experiment in which too many factors were varied to draw a conclusion from the results 
D)  missing a baseline for comparison, making it difficult to draw a conclusion from the results 
E)  an observational study that attempted not to interfere with a natural system

Question 16

The only organic molecule with fewer than two carbon atoms is ____________________.

Accepted Answer

The answer of The only organic molecule with fewer than...

Question 17

A chart showing all known elements arranged by their chemical behavior is called the periodic table.

Accepted Answer

A) True 
 B)False

Question 18

A reaction in which a carbon atom combines with oxygen atoms to form CO2is ____.

Accepted Answer

A)  a physical change 
B)  a chemical change 
C)  both a physical and chemical change 
D)  first a physical change, but then it becomes a chemical change 
E)  neither a physical change or a chemical change, but a scientific change 
A)  a physical change 
B)  a chemical change 
C)  both a physical and chemical change 
D)  first a physical change, but then it becomes a chemical change 
E)  neither a physical change or a chemical change, but a scientific change

Question 19

Most living systems can be described as having inputs, ____, and outputs.

Accepted Answer

A)  Thermodynamics 
B)  Positive transfers 
C)  Throughputs 
D)  Kinetics 
E)  Creations 
A)  Thermodynamics 
B)  Positive transfers 
C)  Throughputs 
D)  Kinetics 
E)  Creations

Question 20

Energy that is greatly dispersed and low temperature is considered____.

Accepted Answer

A)  medium-quality energy 
B)  high-quality energy 
C)  low-quality energy 
D)  medium or high-quality energy depending on whether it is from wind or burning 
E)  kinetic or potential energy depending upon its quality 
A)  medium-quality energy 
B)  high-quality energy 
C)  low-quality energy 
D)  medium or high-quality energy depending on whether it is from wind or burning 
E)  kinetic or potential energy depending upon its quality

Organic compounds always contain ____________________ atoms.

DNA molecules are coiled and shaped around proteins to form larger structures called ____________________.

The law of ____________________ of matter states that whenever matter undergoes a physical or chemical change, no atoms are created or destroyed.

Give an example of a positive feedback loop.

The finding that objects fall to earth at predictable speeds is described by ____.

Why do scientists not talk about "proof" when discussing scientific research?

The statement that, "If land is cleared of vegetation and exposed to rain and melting snow, then the land retains less water and loses soil nutrients," is an example of a(n) ____________________.

An atom's mass number is equal to the total number of ____.

Scientists use data to develop testable hypotheses, which are often written as "If… then" statements.

The pH of a solution is a measure of ions and ions in that solution.

Recall the Bormann-Likens controlled experiment in the forested valleys of New Hampshire. Which statement best describes the effects of water flowing out of deforested areas into undisturbed areas?

A well-tested and widely accepted scientific hypothesis or a group of related hypotheses is called a(n) ____________________.

Logic and critical thinking are more important tools in science than imagination and creativity.

A thermostat set to 62°F turns on the furnace when a house cools below that temperature, and shuts the furnace off when a house warms above that temperature. This is an example of a simple ____.

The Bormann-Likens study in the Hubbard Brook Experimental Forest in New Hampshire can be described as ____.

The only organic molecule with fewer than two carbon atoms is ____________________.

A chart showing all known elements arranged by their chemical behavior is called the periodic table.

A reaction in which a carbon atom combines with oxygen atoms to form CO₂is ____.

Most living systems can be described as having inputs, ____, and outputs.

Energy that is greatly dispersed and low temperature is considered____.

The Environment and Sustainability

Ecosystems: What Are They and How Do They Work

Biodiversity and Evolution

Species Interactions, Ecological Succession and Population Control

The Human Population and Urbanization

Climate and Biodiversity

Sustaining Biodiversity: Saving Species

Sustaining Biodiversity: Saving Ecosystems

Food Production and the Environment

Water Resources and Water Pollution

Geology and Nonrenewable Mineral Resources

Energy Resources

Environmental Hazards and Human Health

Air Pollution, Climate Change and Ozone Depletion

Solid and Hazardous Waste

Environmental Economics, Politics and Worldviews

Filters

Exam 2: Science, Matter, Energy and Systems

Organic compounds always contain ____________________ atoms.

DNA molecules are coiled and shaped around proteins to form larger structures called ____________________.

The law of ____________________ of matter states that whenever matter undergoes a physical or chemical change, no atoms are created or destroyed.

Give an example of a positive feedback loop.

The finding that objects fall to earth at predictable speeds is described by ____.

Why do scientists not talk about "proof" when discussing scientific research?

The statement that, "If land is cleared of vegetation and exposed to rain and melting snow, then the land retains less water and loses soil nutrients," is an example of a(n) ____________________.

An atom's mass number is equal to the total number of ____.

Scientists use data to develop testable hypotheses, which are often written as "If… then" statements.

The pH of a solution is a measure of ____________________ ions and ____________________ ions in that solution.

Recall the Bormann-Likens controlled experiment in the forested valleys of New Hampshire. Which statement best describes the effects of water flowing out of deforested areas into undisturbed areas?

A well-tested and widely accepted scientific hypothesis or a group of related hypotheses is called a(n) ____________________.

Logic and critical thinking are more important tools in science than imagination and creativity.

A thermostat set to 62°F turns on the furnace when a house cools below that temperature, and shuts the furnace off when a house warms above that temperature. This is an example of a simple ____.

The Bormann-Likens study in the Hubbard Brook Experimental Forest in New Hampshire can be described as ____.

The only organic molecule with fewer than two carbon atoms is ____________________.

A chart showing all known elements arranged by their chemical behavior is called the periodic table.

A reaction in which a carbon atom combines with oxygen atoms to form CO2is ____.

Most living systems can be described as having inputs, ____, and outputs.

Energy that is greatly dispersed and low temperature is considered____.

The Environment and Sustainability

Ecosystems: What Are They and How Do They Work

Biodiversity and Evolution

Species Interactions, Ecological Succession and Population Control

The Human Population and Urbanization

Climate and Biodiversity

Sustaining Biodiversity: Saving Species

Sustaining Biodiversity: Saving Ecosystems

Food Production and the Environment

Water Resources and Water Pollution

Geology and Nonrenewable Mineral Resources

Energy Resources

Environmental Hazards and Human Health

Air Pollution, Climate Change and Ozone Depletion

Solid and Hazardous Waste

Environmental Economics, Politics and Worldviews

Filters

The pH of a solution is a measure of ions and ions in that solution.

A reaction in which a carbon atom combines with oxygen atoms to form CO₂is ____.