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Copy of 1.1-1.3 CK12 Reading Review Questions (1/31/2024)
By Elizabeth Stevens
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What is the main purpose of carrying out an experiment in a scientific investigation?
Draw definite conclusions
Test the hypothesis
Confirm a theory
Publish a report
What could be a likely reason for moths having eyespots that resemble an owl's face?
To see better at night
To scare away predators
Random genetic mutation
For vertical flight orientation
What is a hypothesis in the context of scientific investigation?
An opinion
A proven fact
An unequivocal truth
A possible, falsifiable response to a scientific question
Can a hypothesis be proven conclusively to be true?
Yes
Sometimes
No
If there is enough evidence
What happens to a hypothesis if future evidence is found that contradicts it?
It becomes a law
It remains unchanged
It might be disproved
It is proven
Why is communicating results an important part of the scientific process?
To get recognition
To finalize the investigation
Allows others to test your hypothesis
To get more funding
What happens if other researchers obtain the same results as yours?
Your hypothesis becomes a law
You get more recognition
They add support to the hypothesis
They disprove the hypothesis
What is an experiment?
A situation only done in a laboratory
Regularly occurring natural phenomena
Studying subjects in their natural environment
A scientific investigation performed under controlled conditions
What does the fertilizer represent in the plant experiment?
Control group
Dependent variable
Experiment factor
Independent variable
What is the role of a control group in an experiment?
Responsible for change in the experiment
Measures the dependent variable
To be affected by dependent variable
To remain unaffected by the independent variable
In the plant growth experiment, what variable is the plant growth?
Control group
Independent variable
Dependent variable
Experimental factor
What does a larger sample size in an experiment improve?
The likelihood of generally true results
The complexity of the experiment
The speed at which results are processed
Reduction in experiment cost
Why should an experiment be repeated multiple times?
To validate the results
To buy more time
For greater experiment complexity
To train new scientists
What is the relationship between sample size and experimental accuracy?
Inversely proportional
No relationship
Depends on the topic of experiment
Directly proportional
What is meant by experimental error?
Deliberate manipulation of data
Mistake in recording data
Unavoidable mistakes during experiments
Error in the experiment setup
How can experimental errors be minimized?
By ignoring outlying results
By repeating the experiment once
By using more precise equipment
By averaging many measurements
What can be a source of experimental error?
Only humans
Both humans and equipment
Only equipment
Neither humans nor equipment
What does a 'margin of error' signify in an experiment?
Level of precision of equipment
Significance of the experiment
Magnitude of experimental errors
Level of uncertainty associated with results
What is a hypothesis in scientific research?
A question raised for argument
A proven fact
An opinion with no base
A possible answer to a scientific question
What is a scientific theory?
A personal belief
A fact that cannot be disputed
A broad explanation for events widely accepted as true
An untested prediction
How does a hypothesis become a theory?
By being proven false
By gaining popularity
Through repeated testing and evidence support
By being published in a scientific journal
What is a scientific law in science?
It's a credible guess
It's a widely accepted idea
It describes what happens under same conditions
It proves why something happens
How is 'theory' in common speech different from 'theory' in science?
Same meaning in both contexts
Common 'theory' is a guess, scientific 'theory' is fact-like
Common 'theory' is a lie
Scientific 'theory' is a guess
Can a scientific theory develop into a law?
Yes, if proven beyond doubt
No, theory explains why, law states what
Only if it passes extensive tests
Yes, with widespread acceptance
What is the theory of evolution by natural selection?
A theory of static characteristics
A law of identical offspring
A hypothesis of spontaneous generation
A process explaining changes in characteristics of living things
How does evolution occur according to the theory?
Through natural selection over generations
By spontaneous mutation
Through divine intervention
Instantaneously
According to the cell theory, how many cells should a living organism have at least?
Zero
Unlimited
One
Three
Where do living cells originate from according to cell theory?
The environment
Non-living cells
Spontaneous generation
Other living cells
What does the Germ Theory of Disease propose?
Infectious diseases aren't caused by microbes
Microorganisms do not impact health
Microorganisms cause many diseases
Microorganisms prevent diseases
What is another name for the Germ Theory of Disease?
Microbial Theory of Health
Pathogenic Theory of Medicine
Anti-germ Theory
Disease Process Theory