WorksheetsBPS Unit 10 Lessons 3-6
Total questions: 20
Worksheet time: 10mins
Name
Class
Date
1.
How does a scientific theory differ from other types of theories?
a)
A scientific theory is an idea that may or may not be proved to be true.
b)
A scientific theory is a hypothesis that is being tested by many scientists.
c)
A scientific theory is an explanation that is supported by a vast amount of evidence.
d)
A scientific theory is one of several possible ideas to explain an event or observation.
2.
What often happens to a theory when new information is discovered?
a)
The original theory competes with a new theory.
b)
The original theory is refined.
c)
The original theory is replaced with a new theory.
d)
The original theory is rejected.
3.
Before the kinetic molecular theory, the accepted theory described heat as a substance called caloric. Why did scientists reject the caloric theory of heat?
a)
The theory was not supported by experimental evidence.
b)
The theory could not be tested.
c)
Experiments showed that heat had weight.
d)
Experiments showed that heat flowed like a liquid.
4.
Which describes the most important aspect of Dalton's atomic theory?
a)
It was rejected by Avogadro.
b)
It was debated by scientists.
c)
It supported other early ideas about atoms.
d)
It was based on data and experiments.
5.
What is one main way that a scientific theory is different from an everyday idea?
a)
A scientific theory cannot explain a common observation, but an everyday idea can.
b)
A scientific theory is supported by data, but an everyday idea is not.
c)
A scientific theory has been thoroughly tested, but an everyday idea has not.
d)
A scientific theory is a scientific opinion, but an everyday idea is an ordinary opinion.
6.
How does a theory differ from a hypothesis?
a)
A hypothesis can become a theory after it is tested many times.
b)
A hypothesis is a tentative statement, and a theory is an accepted explanation.
c)
A hypothesis can become a theory when it has been proved correct.
d)
A hypothesis is an educated guess, and a theory is a factual statement.
7.
What is true about a hypothesis?
a)
It is a statement of fact.
b)
It is the step before a theory in the scientific method.
c)
It can become a theory if it provides good results.
d)
It can be revised and retested many times.
8.
The development of a scientific theory is supported by
a)
the elimination of all opposing, or contradictory, evidence
b)
the investigation of a large number of hypotheses
c)
the careful selection of specific observations
d)
the systematic testing of different guesses
9.
Which of the following is the best example of a scientific hypothesis?
a)
The best savanna is the Serengeti Plain in eastern Africa, because it has so much biodiversity.
b)
The first organisms on Earth were cyanobacteria.
c)
If evaporation occurs at water's surface, then the surface area of the body of water affects the evaporation rate.
d)
The diameter of Earth is 5,963.8 kilometers greater than the diameter of Mars.
10.
Seafloor spreading involves magma rising at mid-ocean ridges. The magma cools to form new ocean floor that moves away from the ridge as the plates pull apart. Seafloor spreading is evidence for plate tectonics. Which statement best describes how seafloor spreading relates to plate tectonics?
a)
The idea of seafloor spreading may replace the theory of plate tectonics.
b)
Seafloor spreading has not been proved, but plate tectonics has been completely proved.
c)
Seafloor spreading is a testable idea that is part of the theory of plate tectonics.
d)
The idea of seafloor spreading is the same as the idea of plate tectonics.
11.
Is a map or a globe a better model to use when comparing the shapes and sizes of continents?
a)
A globe, because a three-dimensional model is always more accurate than a two-dimensional model.
b)
A map, because the continents are spread out flat and are easy to measure.
c)
A map, because maps can show more details of continents.
d)
A globe, because a flat map of a spherical object causes shapes and sizes to be distorted.
12.
Which of these is a scale model?
a)
a clock
b)
a graduated cylinder
c)
a dollhouse
d)
a digital balance
13.
Which of these is not an advantage of using a model to study a phenomenon?
a)
A model can be less expensive.
b)
A model can be less dangerous.
c)
A model can be less complicated.
d)
A model can be less accurate.
14.
Which of these is a limitation of a globe?
a)
It cannot show many details of Earth's surface.
b)
It is a model of Earth.
c)
Its shape is different from Earth's shape.
d)
It does not accurately show the shape and size of landmasses.
15.
Why are maps and globes considered to be models?
a)
Both are inaccurate representations of Earth's surface.
b)
Both are scale representations of Earth's surface.
c)
Both show the exact same information about Earth.
d)
Both are larger representations of the objects they depict.
16.
What is the main purpose of a scientific model?
a)
A scientific model is a replica, or copy, of a real object.
b)
A scientific model accounts for all the evidence that is known about a real object.
c)
A scientific model functions exactly like a real object.
d)
A scientific model represents at least one aspect of a real object.
17.
Models can be used to
a)
influence or control behaviors
b)
modify or switch behaviors
c)
explain or predict behaviors
d)
promote or discourage behaviors
18.
What can a two-dimensional model of an atom show that a three-dimensional model of an atom cannot show?
a)
what an atom looks like
b)
all that is known about atoms
c)
how atoms interact
d)
how electrons change levels
19.
For which of these purposes would a mathematical model be most useful?
a)
predicting changes in the genes of a population
b)
explaining the shape of an organelle
c)
describing how plants reproduce
d)
studying how animals learn to use tools
20.
A science class studying the behavior of light has learned that depending on what is measured, light behaves in some ways like a wave and in other ways like a particle. How might they account for this?
a)
They can use more than one model to account for the different behaviors of light.
b)
They can use only the model that explains light as a particle and discard the wave model.
c)
They can use only the model that explains light as a wave and discard the particle model.
d)
They can avoid using models to accurately represent light because of light's dual nature.
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