Hypotheses, Theories, and Laws Answers

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1
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Which statement is most likely a scientific law?

A
Animals need oxygen because it unlocks the energy contained in food.
B
Colonies of microscopic organisms grow faster in closed spaces because they cannot fly away.
C
The oldest layers of rock lie below newer layers of rock on Earth.
D
Healthy foods taste better than dangerous or spoiled foods.
2
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Which hypothesis most likely inspired Leeuwenhoek’s experimentation with new technology?

A
If the amount of magnification is correct, then an individual germ can be seen, because individual germs exist but are too small for human eyes.
B
If the amount of magnification is correct, then wounds can be kept clean of germs, because wounds are often infected during surgery.
C
If the correct medicine is used, then a certain disease can be cured, because different diseases are caused by different germs.
D
If the correct medicine is used, then germs can be grown until they are large enough to see, because most germs are too small to see in nature.
3

While studying how objects change motion when they run into each other, Isaac Newton discovered that the force of an object’s impact equals the object’s mass multiplied by its acceleration.He could not explain why this is, but it was clearly true to anyone else who conducted experiments, and it remains just as true today.

A
It is a theory because it developed and changed over time as new technology provided new observations.
B
It is a theory because it is a statement of fact that does not need any more experimental support.
C
It is a law because it developed and changed over time as new technology provided new observations.
D
It is a law because it is a statement of fact that does not need any more experimental support.
4

What was most likely a question that inspired Leeuwenhoek, Koch, and Petri as they developed new technologies while exploring germ theory?

A
How can broken bones be healed more quickly?
B
How can scientists see germs more clearly and easily?
C
What makes some foods more dangerous?
D
What is the one medicine that can heal all diseases?
5

A student proposes this hypothesis in class: "If I make the angle of a ramp steeper, then a ball rolling down the ramp will be going faster when it hits the ground.”

A
an explanation based on prior scientific knowledge or observations
B
an explanation of how the hypothesis will inspire new questions
C
an independent variable that the student controls during the experiment
D
an independent variable that is affected by the other experimental variable
7

hypothesislawtheoryquestion

A
hypothesis
B
law
C
theory
D
question
8

What did Leeuwenhoek use that enabled him to see bacteria?

A
the staining of dishes in a lab
B
the heating of foods and liquids
C
different magnification lenses
D
observations of diseased people
9

What would most likely occur over time if new technologies gave us information that challenged what scientists currently understand about natural selection?

A
A new scientific law would be established and proven by the findings.
B
A new scientific theory would be established and proven by the findings.
C
A current scientific law would be revised based on the new findings.
D
A current scientific theory would be revised based on the new findings.

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