AnswersFL-2002110-MJ Comprehensive Science 3 Advanced A - FlexScientific Knowledge

Scientific Knowledge Answers

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1
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Which best describes scientific facts?

A
observable and objective
B
true and subjective
C
unsupported and believed
D
estimated and unquestioned
2
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Consider the cycle of science shown in the diagram.

Question illustration
A
An explanation inspires new questions and the process of making new observations.
B
A fact inspires new questions and the process of making new observations.
C
A careful systematic process is used in experiments to gather observations and data.
D
A fact is established and more data is needed to convince scientists that it is true.
3

Meditation is a practice of sitting still and quiet for minutes or even hours. It has been practiced for thousands of years and is even a part of religious practices for some people. Carefully controlled, repeated measurements of brain activity have shown that meditation does increase certain chemicals in the brain and even grows the part of the brain that helps people connect with their current surroundings and activities.

A
scientific, because people have been claiming for thousands of years that meditation helps them
B
scientific, because observations of brain growth and chemicals are made carefully and repeatedly
C
pseudoscientific, because practices that are related to religion are based on beliefs and are subjective
D
pseudoscientific, because people have made claims about it but scientific observations have not been made
4

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A
explanation
B
hypothesis
C
objective
D
observation
5

Which statements describe characteristics of pseudoscience? Select three options.

A
Pseudoscience is often based only on opinions.
B
Pseudoscience is based on objective observations.
C
Pseudoscience requires systematic experiments.
D
Pseudoscience often involves explanations of beliefs.
E
Pseudoscience includes subjective ideas.
F
Pseudoscience is cyclical and changes based on new data.
6

Which is a characteristic of pseudoscience?

A
resistance to change
B
continually changing
C
involves a step-by-step method
D
updated by new technology
7

Which best explains how and why scientific knowledge is continually expanded and improved?

A
The scientific process flows in one direction and finds only facts that support a scientist’s original idea.
B
The scientific process is cyclical so that new facts inspire questions that lead to new studies.
C
Once explanations are found to be true, they do not need to be questioned; then scientists can stop studying the topic.
D
Once facts are found through experiments and observations, other scientists do not need to repeat the experiments.
8

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A
life
B
nature
C
Earth
D
beliefs
9

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A
objective
B
observable
C
proven
D
subjective
10

Which best describes why it is important for a scientist to use the metric system when recording data?

A
so the data can be proven in the scientist’s next experiment
B
so the data can be shared and understood around the world
C
so the data can be used in mathematical formulas and models
D
so the data can be accurate and precise in each experiment

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