Science EOC Practice Study Guide Test.
Which question about dogs could be answered through scientific investigation? - CORRECT ANSWER
How fast does an Australian terrier grow?
investigations provide large amounts of information about a wide range of variables. - CORRECT
ANSWER comparative
Investigations that never involve hypothesis - CORRECT ANSWER Descriptive
Name one benefit and one limitation of comparative investigations. - CORRECT ANSWER Comparative
investigations provide large amounts of information and use a wide range of variables. However, they
may reveal relationships that do not always indicate cause and effect.
Why are experimental investigations the best type of scientific investigation to demonstrate cause-and-
effect relationships? - CORRECT ANSWER Experimental investigations are the best type of scientific
investigation to demonstrate cause-and-effect relationships because they allow the investigator to
actively manipulate variables and control conditions. The independent variable can be isolated and
manipulated, producing a change (or no change) in the dependent variable. This change can be
measured to gather evidence to support or refute the cause-and-effect relationship. Experimental
investigations also use a control group (a group that does not receive the factor being tested) for
comparison.
What is a main reason why the scientific model of atoms is considered a theory rather than a law? -
CORRECT ANSWER It has been changed over time.
scientific theory? - CORRECT ANSWER A theory changes based on new observations and testing.
A law - CORRECT ANSWER A law describes something in nature and predicts how it will behave without
explaining why.
, why a law is accepted as fact, but a theory is not ? - CORRECT ANSWER Theories are not accepted as fact
because new information or technology can show that the theory is incomplete or incorrect. A law is
accepted as fact because no exceptions have ever been found. A law is a factual statement .
when an experiment with new information or new technology produces results that support an existing
theory? - CORRECT ANSWER The theory is revised or updated.
Why and how may theories be changed or replaced over time. - CORRECT ANSWER Theories may be
changed over time as new information is discovered or new technologies are developed. New
developments lead to changes in experimental methods, which provide information that may or may
not support the existing theory. If the theory is still supported, it may be updated. If it is not supported,
but the results are true and relevant, the theory may be replaced.
What describes a good hypothesis ? - CORRECT ANSWER • A good hypothesis can be tested.
• A good hypothesis leads to a test with measureable results.
• A good hypothesis provides a possible explanation to answer a scientific question.
What is al law ? - CORRECT ANSWER A law is a factual statement about how something will behave.
What is a theory ? - CORRECT ANSWER A theory is a well-tested explanation of a set of observations.
What is a hypothesis? - CORRECT ANSWER A hypothesis is a possible explanation of a scientific question
that is testable.
Brain-powered cars may most likely reduce ________ caused by distracted drivers. - CORRECT ANSWER
Traffic accidents
For which group of people might brain-powered cars allow the greatest increase in mobility? - CORRECT
ANSWER people with physical disabilities
In what ways are driverless cars safer than human drivers? - CORRECT ANSWER Driverless cars may be
safer than cars with drivers because they do not get tired or distracted, and they do not engage in risky
driving practices such as speeding.
Which question about dogs could be answered through scientific investigation? - CORRECT ANSWER
How fast does an Australian terrier grow?
investigations provide large amounts of information about a wide range of variables. - CORRECT
ANSWER comparative
Investigations that never involve hypothesis - CORRECT ANSWER Descriptive
Name one benefit and one limitation of comparative investigations. - CORRECT ANSWER Comparative
investigations provide large amounts of information and use a wide range of variables. However, they
may reveal relationships that do not always indicate cause and effect.
Why are experimental investigations the best type of scientific investigation to demonstrate cause-and-
effect relationships? - CORRECT ANSWER Experimental investigations are the best type of scientific
investigation to demonstrate cause-and-effect relationships because they allow the investigator to
actively manipulate variables and control conditions. The independent variable can be isolated and
manipulated, producing a change (or no change) in the dependent variable. This change can be
measured to gather evidence to support or refute the cause-and-effect relationship. Experimental
investigations also use a control group (a group that does not receive the factor being tested) for
comparison.
What is a main reason why the scientific model of atoms is considered a theory rather than a law? -
CORRECT ANSWER It has been changed over time.
scientific theory? - CORRECT ANSWER A theory changes based on new observations and testing.
A law - CORRECT ANSWER A law describes something in nature and predicts how it will behave without
explaining why.
, why a law is accepted as fact, but a theory is not ? - CORRECT ANSWER Theories are not accepted as fact
because new information or technology can show that the theory is incomplete or incorrect. A law is
accepted as fact because no exceptions have ever been found. A law is a factual statement .
when an experiment with new information or new technology produces results that support an existing
theory? - CORRECT ANSWER The theory is revised or updated.
Why and how may theories be changed or replaced over time. - CORRECT ANSWER Theories may be
changed over time as new information is discovered or new technologies are developed. New
developments lead to changes in experimental methods, which provide information that may or may
not support the existing theory. If the theory is still supported, it may be updated. If it is not supported,
but the results are true and relevant, the theory may be replaced.
What describes a good hypothesis ? - CORRECT ANSWER • A good hypothesis can be tested.
• A good hypothesis leads to a test with measureable results.
• A good hypothesis provides a possible explanation to answer a scientific question.
What is al law ? - CORRECT ANSWER A law is a factual statement about how something will behave.
What is a theory ? - CORRECT ANSWER A theory is a well-tested explanation of a set of observations.
What is a hypothesis? - CORRECT ANSWER A hypothesis is a possible explanation of a scientific question
that is testable.
Brain-powered cars may most likely reduce ________ caused by distracted drivers. - CORRECT ANSWER
Traffic accidents
For which group of people might brain-powered cars allow the greatest increase in mobility? - CORRECT
ANSWER people with physical disabilities
In what ways are driverless cars safer than human drivers? - CORRECT ANSWER Driverless cars may be
safer than cars with drivers because they do not get tired or distracted, and they do not engage in risky
driving practices such as speeding.
