Question 1

Energy efficiency refers to ____.

Accepted Answer

A) how much energy we use 
B) how much energy is wasted 
C) how much heat is produced 
D) getting more work out of the energy we use 
E) getting more energy out of our work 
A) how much energy we use 
B) how much energy is wasted 
C) how much heat is produced 
D) getting more work out of the energy we use 
E) getting more energy out of our work

Question 2

According to the ____________________, when a physical or chemical change occurs, no atoms are created or destroyed.

Accepted Answer

law of con

Question 3

Scientists estimate that about _____ of the energy used in the United States is unavoidably wasted.

Accepted Answer

A) 5% 
B) 18% 
C) 55% 
D) 84% 
E) 96% 
A) 5% 
B) 18% 
C) 55% 
D) 84% 
E) 96%

Question 4

Which of the following illustrates a negative feedback loop?

Accepted Answer

A) melting polar ice 
B) exponential population growth 
C) a thermostat maintaining a certain temperature in your house 
D) the greenhouse effect 
E) vegetation removed from a stream valley 
A) melting polar ice 
B) exponential population growth 
C) a thermostat maintaining a certain temperature in your house 
D) the greenhouse effect 
E) vegetation removed from a stream valley

Question 5

How useful matter is to humans as a resource is determined by its concentration, availability for use, and its potential.

Accepted Answer

A) True 
 B)False

Question 6

Much of the energy produced is lost before it can become useful. Explain how energy efficiency, or energy productivity, and the second law of thermodynamics may be useful in a discussion with another person on how to reduce CO2 and other greenhouse gas emissions.

Accepted Answer

Machines that use fossil fuels are very

Question 7

What law states that when matter undergoes a physical or chemical change, no atoms are created or destroyed?

Accepted Answer

A) The second law of thermodynamics 
B) The law of conservation of matter 
C) The first law of thermodynamics 
D) The atomic exchange law 
E) The law of conservation of energy 
A) The second law of thermodynamics 
B) The law of conservation of matter 
C) The first law of thermodynamics 
D) The atomic exchange law 
E) The law of conservation of energy

Question 8

How is the concept of an environmental threshold or tipping point important in regards to global warming?

Accepted Answer

A tipping point is a level at which a cr

Question 9

Draw the basic chemical reaction of carbon and oxygen (C + O2)

Accepted Answer

Question 10

What is the fundamental structural and functional unit of life?

Accepted Answer

A) atom 
B) macromolecule 
C) DNA 
D) cell 
E) organism 
A) atom 
B) macromolecule 
C) DNA 
D) cell 
E) organism

Question 11

Explain how heat is a form of kinetic energy.

Accepted Answer

Heat is a form of kinetic energy because

Question 12

According to the law of conservation of matter, once trash decomposes in a landfill, we have completely gotten rid of the matter that made up the trash.

Accepted Answer

A) True 
 B)False

Question 13

Which of the following best illustrates potential energy?

Accepted Answer

A) the wind blowing 
B) water in a stream 
C) steam 
D) a car at the top of a hill 
E) electricity 
A) the wind blowing 
B) water in a stream 
C) steam 
D) a car at the top of a hill 
E) electricity

Question 14

High-quality energy can best be characterized as ____.

Accepted Answer

A) fossilized 
B) pure 
C) electromagnetic 
D) kinetic 
E) concentrated 
A) fossilized 
B) pure 
C) electromagnetic 
D) kinetic 
E) concentrated

Question 15

Energy consumption does not mean the disappearance of energy; rather, it is the conversion of energy from one form to another with no net loss.

Accepted Answer

A) True 
 B)False

Question 16

Which substance is a compound?

Accepted Answer

A) water 
B) oxygen 
C) nitrogen 
D) hydrogen 
E) carbon 
A) water 
B) oxygen 
C) nitrogen 
D) hydrogen 
E) carbon

Question 17

What is the most basic building block of matter?

Accepted Answer

A) molecules 
B) compounds 
C) ions 
D) atoms 
E) minerals 
A) molecules 
B) compounds 
C) ions 
D) atoms 
E) minerals

Question 18

Which statement is an example of a chemical change?

Accepted Answer

A) Confetti is cut from pieces of paper. 
B) Water evaporates from a lake. 
C) Ice cubes are formed in the freezer. 
D) A plant converts carbon dioxide into carbohydrates. 
E) A tree is cut down in the forest. 
A) Confetti is cut from pieces of paper. 
B) Water evaporates from a lake. 
C) Ice cubes are formed in the freezer. 
D) A plant converts carbon dioxide into carbohydrates. 
E) A tree is cut down in the forest.

Question 19

Compounds are combinations of two or more different elements held together in ____________________ proportions.

Accepted Answer

The answer of Compounds are combinations of two or more...

Question 20

What describes the measurement of the concentration of hydrogen ions compared to the concentration of hydroxide ions in a solution?

Accepted Answer

A) ionization 
B) pH 
C) alkalinity 
D) covalent bonding 
E) isotope 
A) ionization 
B) pH 
C) alkalinity 
D) covalent bonding 
E) isotope

Energy efficiency refers to ____.

According to the ____________________, when a physical or chemical change occurs, no atoms are created or destroyed.

Scientists estimate that about _____ of the energy used in the United States is unavoidably wasted.

Which of the following illustrates a negative feedback loop?

How useful matter is to humans as a resource is determined by its concentration, availability for use, and its potential.

Much of the energy produced is lost before it can become useful. Explain how energy efficiency, or energy productivity, and the second law of thermodynamics may be useful in a discussion with another person on how to reduce CO₂ and other greenhouse gas emissions.

What law states that when matter undergoes a physical or chemical change, no atoms are created or destroyed?

How is the concept of an environmental threshold or tipping point important in regards to global warming?

Draw the basic chemical reaction of carbon and oxygen (C + O₂)

What is the fundamental structural and functional unit of life?

Explain how heat is a form of kinetic energy.

According to the law of conservation of matter, once trash decomposes in a landfill, we have completely gotten rid of the matter that made up the trash.

Which of the following best illustrates potential energy?

High-quality energy can best be characterized as ____.

Energy consumption does not mean the disappearance of energy; rather, it is the conversion of energy from one form to another with no net loss.

Which substance is a compound?

What is the most basic building block of matter?

Which statement is an example of a chemical change?

Compounds are combinations of two or more different elements held together in ____________________ proportions.

What describes the measurement of the concentration of hydrogen ions compared to the concentration of hydroxide ions in a solution?

Environmental Problems, Their Causes, and Sustainability

Ecosystems: What Are They and How Do They Work

Biodiversity and Evolution

Biodiversity, Species Interactions, and Population Control

The Human Population and Its Impact

Climate and Biodiversity

Aquatic Biodiversity

Sustaining Biodiversity: The Species Approach

Sustaining Terrestrial Biodiversity: The Ecosystem Approach

Sustaining Aquatic Biodiversity

Filters

Exam 2: Science, Matter, Energy, and Systems

Energy efficiency refers to ____.

According to the ____________________, when a physical or chemical change occurs, no atoms are created or destroyed.

Scientists estimate that about _____ of the energy used in the United States is unavoidably wasted.

Which of the following illustrates a negative feedback loop?

How useful matter is to humans as a resource is determined by its concentration, availability for use, and its potential.

Much of the energy produced is lost before it can become useful. Explain how energy efficiency, or energy productivity, and the second law of thermodynamics may be useful in a discussion with another person on how to reduce CO2 and other greenhouse gas emissions.

What law states that when matter undergoes a physical or chemical change, no atoms are created or destroyed?

How is the concept of an environmental threshold or tipping point important in regards to global warming?

Draw the basic chemical reaction of carbon and oxygen (C + O2)

What is the fundamental structural and functional unit of life?

Explain how heat is a form of kinetic energy.

According to the law of conservation of matter, once trash decomposes in a landfill, we have completely gotten rid of the matter that made up the trash.

Which of the following best illustrates potential energy?

High-quality energy can best be characterized as ____.

Energy consumption does not mean the disappearance of energy; rather, it is the conversion of energy from one form to another with no net loss.

Which substance is a compound?

What is the most basic building block of matter?

Which statement is an example of a chemical change?

Compounds are combinations of two or more different elements held together in ____________________ proportions.

What describes the measurement of the concentration of hydrogen ions compared to the concentration of hydroxide ions in a solution?

Environmental Problems, Their Causes, and Sustainability

Ecosystems: What Are They and How Do They Work

Biodiversity and Evolution

Biodiversity, Species Interactions, and Population Control

The Human Population and Its Impact

Climate and Biodiversity

Aquatic Biodiversity

Sustaining Biodiversity: The Species Approach

Sustaining Terrestrial Biodiversity: The Ecosystem Approach

Sustaining Aquatic Biodiversity

Filters

Much of the energy produced is lost before it can become useful. Explain how energy efficiency, or energy productivity, and the second law of thermodynamics may be useful in a discussion with another person on how to reduce CO₂ and other greenhouse gas emissions.

Draw the basic chemical reaction of carbon and oxygen (C + O₂)