Question 1

Which statement describes the scientific process?&#160;&#10;A)&#160;Established scientific theories are not challenged and continue to hold true.&#160;&#10;B)&#160;Advances in science are never based on disagreement, speculation, and controversy.&#160;&#10;C)&#160;Science is the acceptance of what works and the rejection of what does not work.&#160;&#10;D)&#160;Scientific laws and theories are based on certainties, not statistical probabilities.

Accepted Answer

The scientific process involves testing and experimentation to determine what works and what does not work. This leads to acceptance or rejection of ideas based on evidence and data, rather than blindly adhering to established theories or relying solely on speculation and controversy. The scientific method also recognizes that scientific laws and theories can be based on statistical probabilities, rather than absolute certainties.

Question 2

Which means do scientists use to reduce errors in their observations and measurements?&#160;&#10;A)&#160;taking measurement only once and using that value&#160;&#10;B)&#160;testing measuring devices against known samples&#160;&#10;C)&#160;testing measuring devices against unknown samples&#160;&#10;D)&#160;using procedures that are not standardized

Accepted Answer

Scientists use a variety of methods to reduce errors in their observations and measurements, including testing measuring devices against known samples. This ensures that the instruments are accurate and reliable. Simply taking a measurement once and using that value may not be sufficient to account for potential errors or variations. Testing measuring devices against unknown samples may not be effective, as there is no way to know whether any discrepancies in the measurements are due to errors in the device or the sample itself. Using procedures that are not standardized can also lead to inconsistencies and errors. Therefore, option B is the best choice.

Question 3

When are mathematical models most useful?&#160;&#10;A)&#160;when controlled experiments are impossible&#160;&#10;B)&#160;when controlled experiments are very easy to perform&#160;&#10;C)&#160;when responses to causing events show no variability&#160;&#10;D)&#160;when there are a few interacting variables

Accepted Answer

Mathematical models are most useful when controlled experiments are impossible, as they allow researchers to simulate and predict outcomes in complex systems without the need for costly, time-consuming and often unrealistic experiments. Mathematical models are especially useful in disciplines where experimentation is expensive or impractical, such as in astronomy, meteorology, economics, or ecology. Furthermore, mathematical models can help identify the key factors or variables that influence a phenomenon, and their simulation can help researchers validate their theories and understand the underlying mechanisms.

Question 4

Which of the following is characteristic of a system?&#160;&#10;A)&#160;A system functions in a regular and predictable manner.&#160;&#10;B)&#160;A system consists solely of inputs and outputs.&#160;&#10;C)&#160;A system cannot be accurately modeled.&#160;&#10;D)&#160;A system is highly random in its function.

Accepted Answer

A system is characterized by its regular and predictable functioning, where inputs are transformed into outputs according to specific rules or processes. It is not solely made up of inputs and outputs, as there may be internal components and processes that mediate the transformation of inputs to outputs. A system can be accurately modeled, although the complexity of the system may affect the accuracy of the model. A system is not inherently random in its function, although randomness or variability may be present in some types of systems.

Question 5

Which question is a scientist most likely to ask?&#160;&#10;A)&#160;How many times should we run this experiment?&#160;&#10;B)&#160;What is the meaning of life for humans?&#160;&#10;C)&#160;What new hypothesis can be drawn to test this experiment?&#160;&#10;D)&#160;How can these scientific laws be formulated to use the data?

Accepted Answer

The answer of Which question is a scientist most likely...

Question 6

Which model is the most useful for perceiving and predicting events in the environmental arena?&#160;&#10;A)&#160;a conceptual model&#160;&#10;B)&#160;a mathematical model&#160;&#10;C)&#160;a physical model&#160;&#10;D)&#160;a mental model

Accepted Answer

Mathematical models are the most useful for perceiving and predicting events in the environmental arena as they can incorporate data from multiple sources and simulate complex scenarios. They allow for quantitative analysis and can provide precise predictions.

Question 7

Which behaviour would be most appreciated by the scientific community?&#160;&#10;A)&#160;observing patterns in an artificial environment&#160;&#10;B)&#160;overstating a claim&#160;&#10;C)&#160;understating a claim&#160;&#10;D)&#160;hypothesizing about evidence

Accepted Answer

Hypothesizing about evidence is a fundamental part of the scientific method, as it involves forming a testable explanation based on observations and evidence.

Question 8

Which statement best characterizes the effect of human events on the environment?&#160;&#10;A)&#160;Feedback is usually immediate.&#160;&#10;B)&#160;It is predicted that the environment is diverse.&#160;&#10;C)&#160;Long delays exist between events and responses.&#160;&#10;D)&#160;Our generalizations are based upon many experiences.

Accepted Answer

Human events can have long-lasting impacts on the environment, and it often takes time to see the full effect of those events on ecosystems and natural resources. For example, deforestation can lead to soil erosion and loss of biodiversity, but those effects may not become apparent for years or even decades after the initial clearing of trees. Similarly, pollution from industrial activities can take time to accumulate and begin to affect local water and air quality. Therefore, long delays exist between events and responses, and it can be difficult to predict the full extent of those responses.

Question 9

Which statement most accurately describes frontier science?&#160;&#10;A)&#160;Frontier science can lead the public to think that science has all the answers.&#160;&#10;B)&#160;Frontier science often deals with untested models and hypotheses.&#160;&#10;C)&#160;Frontier science is used in remote places.&#160;&#10;D)&#160;Frontier science often deals with well-documented data.

Accepted Answer

Frontier science refers to scientific research that deals with untested models and hypotheses. It is often in the preliminary stages of investigation and does not yet have a clear consensus within the scientific community.

Question 10

Which model is most likely to be used in the scientific process?&#160;&#10;A)&#160;a religious model&#160;&#10;B)&#160;a facility model&#160;&#10;C)&#160;a theological model&#160;&#10;D)&#160;a biological model

Accepted Answer

The scientific process involves testing hypotheses and making observations based on empirical evidence. A biological model, which is based on principles of biology, would be the most suitable model for this process. Religious, facility, and theological models do not rely on empirical evidence and are therefore not appropriate for scientific processes.

Question 11

What is one example of a positive feedback loop?&#160;&#10;A)&#160;a temperature-regulating system&#160;&#10;B)&#160;compound interest in a savings account&#160;&#10;C)&#160;recycling aluminum cans&#160;&#10;D)&#160;a thermostat

Accepted Answer

The answer of What is one example of a positive...

Question 12

What is one example of a negative feedback loop?&#160;&#10;A)&#160;a thermostat that maintains a certain temperature in your house&#160;&#10;B)&#160;sweating to heat your body up during and after vigorous exercise&#160;&#10;C)&#160;exponential population growth&#160;&#10;D)&#160;the accelerating gain of heat as a pan of hot water is removed from the stove

Accepted Answer

The answer of What is one example of a negative...

Question 13

What type of models do weather forecasters rely on?&#160;&#10;A)&#160;complicated theological models&#160;&#10;B)&#160;complicated conceptual models&#160;&#10;C)&#160;complicated mathematical models&#160;&#10;D)&#160;complicated mental models

Accepted Answer

The answer of What type of models do weather forecasters...

Question 14

Which source is best to consult in order to learn more about what scientists generally agree on?&#160;&#10;A)&#160;Popular Science&#160;&#10;B)&#160;CNN&#160;&#10;C)&#160;newspaper headlines&#160;&#10;D)&#160;Canadian Journal of Zoology publications

Accepted Answer

The answer of Which source is best to consult in...

Question 15

Which statement is most likely to be said by a scientist?&#160;&#10;A)&#160;I'd like to offer an alternative hypothesis to explain the data.&#160;&#10;B)&#160;Perhaps you are right. But I think the data more strongly support a different view.&#160;&#10;C)&#160;That seems a plausible model of the system we are studying.&#160;&#10;D)&#160;We should design an experiment to test this hypothesis.

Accepted Answer

The answer of Which statement is most likely to be...

Question 16

What is required to discover and formulate a scientific law?&#160;&#10;A)&#160;fabrication&#160;&#10;B)&#160;lack of knowledge&#160;&#10;C)&#160;fairy tales&#160;&#10;D)&#160;use of scientific methods

Accepted Answer

The answer of What is required to discover and formulate...

Question 17

What does a positive feedback loop do?&#160;&#10;A)&#160;A positive feedback loop accelerates change and goes on infinitely.&#160;&#10;B)&#160;A positive feedback loop slows down change and goes on infinitely.&#160;&#10;C)&#160;A positive feedback loop slows down change and is finite.&#160;&#10;D)&#160;A positive feedback loop accelerates change and is finite.

Accepted Answer

The answer of What does a positive feedback loop do?&#160;&#10;A)&#160;A...

Question 18

What is one example of a negative feedback loop?&#160;&#10;A)&#160;chaos&#160;&#10;B)&#160;leverage&#160;&#10;C)&#160;secretion of certain enzymes increase the rate of certain chemical reactions&#160;&#10;D)&#160;the human body sweating in response to heat

Accepted Answer

The answer of What is one example of a negative...

Question 19

Which description represents a system?&#160;&#10;A)&#160;multiple mathematical equations used to describe the behaviour of multiple observations&#160;&#10;B)&#160;a set of components that function and interact in some regular and theoretically understandable manner&#160;&#10;C)&#160;a physical model that has positive and negative feedback loops that proves a scientific hypothesis&#160;&#10;D)&#160;a conceptual model that proves a scientific hypothesis

Accepted Answer

The answer of Which description represents a system?&#160;&#10;A)&#160;multiple mathematical equations...

Question 20

Which of the following is the best definition of science?&#160;&#10;A)&#160;Science is a collection of facts determined by scientific methods.&#160;&#10;B)&#160;Science studies the past to predict the future.&#160;&#10;C)&#160;Science attempts to discover order in nature to interpret the past.&#160;&#10;D)&#160;Science uses data to formulate scientific laws that become the basis for making predictions.

Accepted Answer

The answer of Which of the following is the best...

Question 21

Which statement is the best definition of matter?&#160;&#10;A)&#160;Matter has the capacity to change in form.&#160;&#10;B)&#160;Matter has the ability to produce change.&#160;&#10;C)&#160;Matter has mass and occupies space.&#160;&#10;D)&#160;Matter has the capacity to do work.

Accepted Answer

The answer of Which statement is the best definition of...

Question 22

Which situation involves a long time delay that results in environmental degradation?&#160;&#10;A)&#160;depletion of the ozone layer&#160;&#10;B)&#160;clear-cutting a forest&#160;&#10;C)&#160;marine oil spills&#160;&#10;D)&#160;building new four-lane highways

Accepted Answer

The answer of Which situation involves a long time delay...

Question 23

What is the nature of liquids,solids,and gases?&#160;&#10;A)&#160;they are chemical forms of matter&#160;&#10;B)&#160;they are compounds&#160;&#10;C)&#160;they are physical states of matter&#160;&#10;D)&#160;they are mixtures

Accepted Answer

The answer of What is the nature of liquids,solids,and gases?&#160;&#10;A)&#160;they...

Question 24

Which of the following is an element?&#160;&#10;A)&#160;compound&#160;&#10;B)&#160;soil&#160;&#10;C)&#160;water&#160;&#10;D)&#160;nitrogen

Accepted Answer

The answer of Which of the following is an element?&#160;&#10;A)&#160;compound&#160;&#10;B)&#160;soil&#160;&#10;C)&#160;water&#160;&#10;D)&#160;nitrogen...

Question 25

Which term best defines a situation where two or more processes interact such that the combined effect is greater than the sum of the individual effects?&#160;&#10;A)&#160;a chaotic interaction&#160;&#10;B)&#160;a homeostatic interaction&#160;&#10;C)&#160;a negative feedback interaction&#160;&#10;D)&#160;a synergistic interaction

Accepted Answer

The answer of Which term best defines a situation where...

Question 26

How do isotopes differ from each other?&#160;&#10;A)&#160;by their number of protons&#160;&#10;B)&#160;by their number of neutrons&#160;&#10;C)&#160;by their number of ions&#160;&#10;D)&#160;by their number of atoms

Accepted Answer

The answer of How do isotopes differ from each other?&#160;&#10;A)&#160;by...

Question 27

What is the electronic charge of an ion?&#160;&#10;A)&#160;a net negative charge&#160;&#10;B)&#160;no charge&#160;&#10;C)&#160;a net positive charge&#160;&#10;D)&#160;a net positive or a net negative charge

Accepted Answer

The answer of What is the electronic charge of an...

Question 28

The community knew the effects of Chemical X and Chemical Y when used independently of one another.Safe limits were set for the use of each chemical.When both chemicals were released into the environment at their safe levels,but at the same time and location,massive quantities of fish died.What is the most probable explanation for this occurrence?

A) negative feedback
B) synergistic interaction
C) positive feedback
D) homeostasis

Accepted Answer

The answer of The community knew the effects of Chemical...

Question 29

What is the name of the forces of attraction between water molecules?&#160;&#10;A)&#160;compound bonds&#160;&#10;B)&#160;covalent bonds&#160;&#10;C)&#160;hydrogen bonds&#160;&#10;D)&#160;ionic bonds

Accepted Answer

The answer of What is the name of the forces...

Question 30

Which of the following is an example of a time delay?&#160;&#10;A)&#160;A fox eats a rabbit.&#160;&#10;B)&#160;A smoker develops lung cancer.&#160;&#10;C)&#160;A largemouth bass eats a salmon fry.&#160;&#10;D)&#160;Higher altitude causes oxygen deficiency.

Accepted Answer

The answer of Which of the following is an example...

Question 31

How many H+ ions are there in a solution with a ph of 6 compared to a solution with a ph of 8?&#160;&#10;A)&#160;2000 less&#160;&#10;B)&#160;2000 more&#160;&#10;C)&#160;100 less&#160;&#10;D)&#160;100 more

Accepted Answer

The answer of How many H+ ions are there in...

Question 32

What does the term atomic number refer to?&#160;&#10;A)&#160;the number of atoms in a molecule&#160;&#10;B)&#160;the number of protons in an atom&#160;&#10;C)&#160;the number of electrons in an atom&#160;&#10;D)&#160;the number of neutrons in a molecule

Accepted Answer

The answer of What does the term atomic number refer...

Question 33

What is one distinctive building block of matter?&#160;&#10;A)&#160;compound&#160;&#10;B)&#160;mixture&#160;&#10;C)&#160;element&#160;&#10;D)&#160;isotope

Accepted Answer

The answer of What is one distinctive building block of...

Question 34

What are protons,neutrons,and electrons examples of?&#160;&#10;A)&#160;negative ions&#160;&#10;B)&#160;forms of energy&#160;&#10;C)&#160;subatomic particles&#160;&#10;D)&#160;charged particles

Accepted Answer

The answer of What are protons,neutrons,and electrons examples of?&#160;&#10;A)&#160;negative ions&#160;&#10;B)&#160;forms...

Question 35

What does the space occupied by an atom mostly consist of?&#160;&#10;A)&#160;protons&#160;&#10;B)&#160;nothing&#160;&#10;C)&#160;neutrons&#160;&#10;D)&#160;electrons

Accepted Answer

The answer of What does the space occupied by an...

Question 36

A driver and passenger were stopped by a fallen tree across the road.Although neither could move the tree alone,together they moved it off the road.Which concept best describes their solution?&#160;&#10;A)&#160;homeostatic interaction&#160;&#10;B)&#160;positive feedback interaction&#160;&#10;C)&#160;synergistic interaction&#160;&#10;D)&#160;chaotic interaction

Accepted Answer

The answer of A driver and passenger were stopped by...

Question 37

Which statement is the best example of - a synergistic interaction?&#160;&#10;A)&#160;The combined effects of alcohol and a depressant produce a greater effect than would be expected from adding their individual effects.&#160;&#10;B)&#160;When the exponential growth of the human population exceeds the carrying capacity, a massive dieback will occur.&#160;&#10;C)&#160;The use of alcohol reduces the effectiveness of a blood thinner.&#160;&#10;D)&#160;Secondary smoke may increase chances of lung cancer in a nonsmoker.

Accepted Answer

The answer of Which statement is the best example of...

Question 38

Which of the following best describes N2 and O&#8322;?&#160;&#10;A)&#160;molecules consisting of two elements of the same compound&#160;&#10;B)&#160;molecules consisting of two atoms of the same element&#160;&#10;C)&#160;compounds consisting of two different elements&#160;&#10;D)&#160;elements consisting of a compound and an ion

Accepted Answer

The answer of Which of the following best describes N2...

Question 39

Which statement best describes a synergistic effect?&#160;&#10;A)&#160;It induces a positive feedback loop and results in continued interaction.&#160;&#10;B)&#160;It occurs when two or more factors interact to produce a greater effect than each would have produced separately.&#160;&#10;C)&#160;It results in a time delay.&#160;&#10;D)&#160;It occurs when two or more factors interact to produce a lesser effect than each would have produced separately.

Accepted Answer

The answer of Which statement best describes a synergistic effect?&#160;&#10;A)&#160;It...

Question 40

What is atomic mass equal to?&#160;&#10;A)&#160;the sum of the neutrons and protons&#160;&#10;B)&#160;the sum of the neutrons and isotopes&#160;&#10;C)&#160;the sum of the neutrons and electrons&#160;&#10;D)&#160;the sum of the protons, neutrons, and electrons

Accepted Answer

The answer of What is atomic mass equal to?&#160;&#10;A)&#160;the sum...

Question 41

What uses low-quality energy?&#160;&#10;A)&#160;electric motors&#160;&#10;B)&#160;furnaces for space heating&#160;&#10;C)&#160;gas combustion engines&#160;&#10;D)&#160;stoves for cooking

Accepted Answer

The answer of What uses low-quality energy?&#160;&#10;A)&#160;electric motors&#160;&#10;B)&#160;furnaces for space...

Question 42

Which complex compound is matched with its correct building block?&#160;&#10;A)&#160;proteins-fatty acids&#160;&#10;B)&#160;nucleic acids-monosaccharides&#160;&#10;C)&#160;chromosomes-proteins&#160;&#10;D)&#160;complex carbohydrates-simple sugars such as glucose

Accepted Answer

The answer of Which complex compound is matched with its...

Question 43

The manufacture of one plastic soda pop bottle requires the consumption of approximately 100 litres of crude oil,100 kilograms of steel,100 litres of water,and various amounts of other materials.Which statement best describes this situation?

A) Plastic bottles have a low material efficiency.
B) Plastic bottles have a high resource productivity.
C) Most of the matter used to manufacture plastic bottles ends up in the bottle.
D) Plastic bottles represent an efficient use of resources.

Accepted Answer

The answer of The manufacture of one plastic soda pop...

Question 44

What is present in all organic compounds?&#160;&#10;A)&#160;hydrogen&#160;&#10;B)&#160;carbon&#160;&#10;C)&#160;oxygen&#160;&#10;D)&#160;nitrogen

Accepted Answer

The answer of What is present in all organic compounds?&#160;&#10;A)&#160;hydrogen&#160;&#10;B)&#160;carbon&#160;&#10;C)&#160;oxygen&#160;&#10;D)&#160;nitrogen...

Question 45

What is the relative energy quality of normal sunlight?&#160;&#10;A)&#160;very high&#160;&#10;B)&#160;low&#160;&#10;C)&#160;high&#160;&#10;D)&#160;moderate

Accepted Answer

The answer of What is the relative energy quality of...

Question 46

The spectrum of electromagnetic radiation released by the sun consists mostly of what type of radiation?&#160;&#10;A)&#160;gamma rays&#160;&#10;B)&#160;ultraviolet waves&#160;&#10;C)&#160;visible waves&#160;&#10;D)&#160;infrared waves

Accepted Answer

The answer of The spectrum of electromagnetic radiation released by...

Question 47

What is included in all organic compounds?&#160;&#10;A)&#160;cadmium&#160;&#10;B)&#160;hydrocarbons&#160;&#10;C)&#160;hydro-oxygens&#160;&#10;D)&#160;carbon dioxide

Accepted Answer

The answer of What is included in all organic compounds?&#160;&#10;A)&#160;cadmium&#160;&#10;B)&#160;hydrocarbons&#160;&#10;C)&#160;hydro-oxygens&#160;&#10;D)&#160;carbon...

Question 48

What is the best example of low-quality energy?&#160;&#10;A)&#160;electricity&#160;&#10;B)&#160;nuclei of uranium-235&#160;&#10;C)&#160;coal&#160;&#10;D)&#160;heat in the ocean

Accepted Answer

The answer of What is the best example of low-quality...

Question 49

Which statement is a valid conclusion based on the law of conservation of matter?&#160;&#10;A)&#160;Everything we've thrown away is still here in one form or another.&#160;&#10;B)&#160;We will eventually run out of matter if we keep consuming it at current rates.&#160;&#10;C)&#160;Pollution can be eliminated completely.&#160;&#10;D)&#160;We can throw everything away.

Accepted Answer

The answer of Which statement is a valid conclusion based...

Question 50

Which source of energy will most likely provide high-temperature industrial heat?&#160;&#10;A)&#160;high velocity water flow&#160;&#10;B)&#160;hydrogen gas&#160;&#10;C)&#160;concentrated sunlight&#160;&#10;D)&#160;concentrated geothermal

Accepted Answer

The answer of Which source of energy will most likely...

Question 51

Which of the following is an example of potential energy?&#160;&#10;A)&#160;chemical energy in a chocolate bar&#160;&#10;B)&#160;electricity flowing through a wire&#160;&#10;C)&#160;a leaf falling from a tree&#160;&#10;D)&#160;a bullet fired at high velocity

Accepted Answer

The answer of Which of the following is an example...

Question 52

Which term best describes what H&#8322;O and NaCl are?&#160;&#10;A)&#160;organic compounds&#160;&#10;B)&#160;inorganic compounds&#160;&#10;C)&#160;mixtures&#160;&#10;D)&#160;elements

Accepted Answer

The answer of Which term best describes what H&#8322;O and...

Question 53

Which of the following is an example of kinetic energy?&#160;&#10;A)&#160;a chunk of coal&#160;&#10;B)&#160;a stick of dynamite&#160;&#10;C)&#160;a falling rock&#160;&#10;D)&#160;a pellet of uranium oxide

Accepted Answer

The answer of Which of the following is an example...

Question 54

How do scientists classify energy?&#160;&#10;A)&#160;as either potential or mechanical&#160;&#10;B)&#160;as either potential or kinetic&#160;&#10;C)&#160;as either chemical or physical&#160;&#10;D)&#160;as either kinetic or mechanical

Accepted Answer

The answer of How do scientists classify energy?&#160;&#10;A)&#160;as either potential...

Question 55

What is the relative energy quality of electricity?&#160;&#10;A)&#160;very high&#160;&#10;B)&#160;high&#160;&#10;C)&#160;low&#160;&#10;D)&#160;moderate

Accepted Answer

The answer of What is the relative energy quality of...

Question 56

Which of the following is an example of ionizing radiation?&#160;&#10;A)&#160;microwaves&#160;&#10;B)&#160;gamma rays&#160;&#10;C)&#160;infrared waves&#160;&#10;D)&#160;visible waves

Accepted Answer

The answer of Which of the following is an example...

Question 57

Which molecule might experience a mutation that could be passed from one generation to the next?&#160;&#10;A)&#160;protein&#160;&#10;B)&#160;hydrocarbon&#160;&#10;C)&#160;DNA&#160;&#10;D)&#160;carbohydrate

Accepted Answer

The answer of Which molecule might experience a mutation that...

Question 58

Which statement is an example of a physical change?&#160;&#10;A)&#160;A chunk of coal is burned to produce carbon dioxide.&#160;&#10;B)&#160;In the troposphere, sulphur dioxide and water vapour reacts to produce sulphuric acid.&#160;&#10;C)&#160;A plant converts carbon dioxide into carbohydrate.&#160;&#10;D)&#160;Confetti is cut from pieces of paper.

Accepted Answer

The answer of Which statement is an example of a...

Question 59

Which source of iron would be of the highest quality?&#160;&#10;A)&#160;deposits on the ocean floor&#160;&#10;B)&#160;a large, scrap metal junkyard&#160;&#10;C)&#160;a field of spinach&#160;&#10;D)&#160;a 0.5-mile deep deposit

Accepted Answer

The answer of Which source of iron would be of...

Question 60

What is the best definition of energy?&#160;&#10;A)&#160;Energy is the movement of molecules.&#160;&#10;B)&#160;Energy is the random motion of molecules.&#160;&#10;C)&#160;Energy is the ability to do work and transfer heat.&#160;&#10;D)&#160;Energy is a force that is exerted over some distance.

Accepted Answer

The answer of What is the best definition of energy?&#160;&#10;A)&#160;Energy...

Question 61

What is the main use of radioisotopes?&#160;&#10;A)&#160;cancer therapy&#160;&#10;B)&#160;as garden insecticides&#160;&#10;C)&#160;to stop pollution&#160;&#10;D)&#160;as agricultural herbicides

Accepted Answer

The answer of What is the main use of radioisotopes?&#160;&#10;A)&#160;cancer...

Question 62

What is characteristic of physical and chemical reactions?&#160;&#10;A)&#160;They involve changes in energy, but not in matter.&#160;&#10;B)&#160;They involve changes in matter, but not energy.&#160;&#10;C)&#160;They always require energy.&#160;&#10;D)&#160;They sometimes emit energy.

Accepted Answer

The answer of What is characteristic of physical and chemical...

Question 63

Which matter is broken down by biological action?&#160;&#10;A)&#160;uranium&#160;&#10;B)&#160;plastic toys&#160;&#10;C)&#160;litter in the environment&#160;&#10;D)&#160;lead and mercury

Accepted Answer

The answer of Which matter is broken down by biological...

Question 64

Which statement applies to the second law of thermodynamics?&#160;&#10;A)&#160;Energy conversion results in less dispersed energy.&#160;&#10;B)&#160;Heat is usually given off from energy conversions.&#160;&#10;C)&#160;Energy can be neither created nor destroyed.&#160;&#10;D)&#160;Energy conversion results in higher quality energy.

Accepted Answer

The answer of Which statement applies to the second law...

Deck 3: Science, systems, matter, and Energy