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Investigation And Experimentation
Test Description: Investigation and experimentation
Instructions: Answer all questions to get your test result.
1) What is the difference between a theory and a hypothesis?
A
A hypothesis never changes during an experiment, while a theory is often changed as observations produce new data.
B
A hypothesis changes during the experiment, which results in a change of theory.
C
A hypothesis is an explanation that is consistent with all existing tests, and a theory is a general statement about the natu
D
A hypothesis is a possible explanation for a problem, and a theory is an explanation that is consistent with all existing tes
2) If experimental results do not match their predictions, scientists generally will
A
repeat the experiment until the results will match
B
revise their working hypothesis
C
change their experimental results
D
make the measurements more precise
3) If scientists make an observation that does not agree with an accepted scientific theory, the scientiss should
A
perform more experiments to determine if the observation is the result of error or if the theory is wrong
B
conclude that the theory is wrong
C
publish their results so other scientists can test the theory
D
assume that their observations are incorrect
4) How can you determine whether the contours on a topographic map show a gradual slope
A
look for a V-shpaed contour lines
B
look for tightly spaced, circular contour lines
C
look for short, straight lines inside the loop
D
look for widely spaced contour lines
5) On a topographic map, which lines illustrate a a river?
A
lines that bend in a V
B
bold lines
C
closed loops that have short straight lines inside
D
lines that form a closed loop
6) In an area where a river has cut deep into Earth, there are several layers of very differenr rock exposed. The oldest rock layer is most likely to be the layer that is
A
below other layers
B
igneous intrusive rock
C
the thickest layer
D
the most rich in fossils
7) The existence of terrestrial life may never be proven, but this idea wil become more scientifically acceptable over time if
A
no one disputes this idea in a scientific forum
B
increasing scientific evidence supports the idea
C
alternative hypotheses are proposed and confirmed
D
hypotheses are made related to the idea
8) The hardness of a mineral can be determined by using which of the following tools?
A
a piece of glass
B
an ultraviolet light
C
a streak plate
D
a balance
9) A statement that consistently and correctly describe a natural phenomenon is a scientific
A
theory
B
hypothesis
C
control
D
observation
10) During which step of the scientific method do scientists develop a possible explanation for a problem?
A
form a hypothesis
B
collect data
C
draw conclusions
D
testing
*select an answer for all questions
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