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WorksheetsPSSA Review - Nature of Science
Total questions: 35
Worksheet time: 23mins
Which statement correctly describes scientific knowledge?
It changes from place to place
It is based on opinions
It is based on facts
It varies from person to person
Which statement correctly describes one of the benefits of technology?
Tech must be used to make a discovery
Tech leads to new discoveries
Tech results in acid rain
Tech reduces the need for scientists to communicate.
Which quantity is an example of a change in rate?
52
25%
1.0 gram
25 miles/hour
Which is a measurement in the metric system?
meters
pounds
dollars
fahrenheit
Microscopes are used to...
create organic matter
make large objects appear small
make Mr. Sonntag run faster
make small objects appear large
What is an example of a system?
Nutrient
Rock
Motorized vehicle
copper wire
True or false: Patterns do not occur in nature.
True
False
Which is true of a hypothesis?
It must be testable
It must be proven correct
it cannot be based on observations
It must be the answer to the scientific question
Which instrument could give you the same volume of water?
Measuring tape
Meterstick
Beaker
thermometer
What should a scientist do if a hypothesis is NOT supported by data?
Carry out further investigations.
Stop investigating the question.
Change the hypothesis to match the data
Change the data to support the hypothesis
Which of the following statements about hypotheses is true?
Hypotheses can never be
changed.
Hypotheses are always proven to be true.
Hypotheses can be accepted or rejected
Hypotheses can be proven true without evidence.
Helen is studying the growth of two different types of plants. She planted two of each type of plant in locations with different levels of sunlight: full sun, partial shade, and full shade. For five weeks, Helen records the number of new leaves on each plant.
Which of the following statements correctly describes the independent and dependent variables in Helen's experiment?
The independent variable is the kind of plant, and the dependent variable is the amount of sunlight.
The independent variable is the amount of sunlight, and the dependent variable is the number of new leaves.
The independent variable is the amount of sunlight, and the dependent variable is the kind of plant.
The independent variable is the number of new leaves, and the dependent variable is the amount of sunlight.
Which statement is the best argument for a hypothesis that has evidence to reinforce its claim?
The results create the hypothesis.
The results prove the hypothesis
The results change the hypothesis.
The results support the hypothesis
In a scientific discussion, what is the most rigorous support of a claim?
spirited debate
experimental evidence
strong opinion
persuasive narrative
Samuel conducts an experiment. He makes many observations and measurements and records each very carefully. At the conclusion of the experiment he discovers that the data he collected do not support his hypothesis. What should he do?
Report his observations and conclusions honestly, clearly stating that the data do not support the hypothesis.
Change his hypothesis to one that is supported by the data.
Change the data so that they support his hypothesis.
Throw all of his data and observations away and repeat the experiment
A scientist wanted to know more about these blue birds at a beach. He goes to the beach and he writes down everything he sees the birds doing and all the sounds they make. This is an example of which scientific tool?
observation
analysis
hypothesis testing
replication
What is the function of this instrument?
As a result of these scientific discoveries, scientists are now able to
Based on his observations, which of the following is a general hypothesis Manuel might form?
Which of the steps in the system are examples of processes?
