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Scientific Processes
Test Description: Please answer the review questions.
Instructions: Answer all questions to get your test result.
1) Which type of equipment would be used to precisely measure 26.0 mL of dilute hydrochloric acid?
A
50 mL graduate cylinder
B
500 mL erlenmeyer flask
C
10 mL test tube
D
100 mL beaker
2) A computer model can simulate the aspects of viral reproduction quite well. However, microscopic observation of actual viral reproduction can improve understanding because it
A
are easier than a computer model to view
B
are the same each time
C
may reveal greater unknown complexities
D
may provide reproduction events in sequence
3) A student measured the length of a piece of twine that was 35.84 mm long. Her measurements were 37.52 mm, 37.54 mm, 37.57 mm and 37.55 mm. Which of the following statements is true
A
The measurements were accurate but not precise
B
The measurements were neither accurate nor precise
C
The measurements were precise but not accurate
D
The measurements were both precise and accurate
4) When a scientist compare two or more objects what is he or she looking for?
A
similarities
B
errors
C
changes
D
causes and effects
5) Statistics about the climate in a tundra ecosystem were collected for 30 years. Which hypothesis about a population of caribou could be made based on the climate data collected?
A
Caribou calf survival is directly related to annual rainfall amounts.
B
Caribou remain with the same mate throughout their lifetime.
C
An outbreak of disease in 1984 killed 35% of the caribou population.
D
Mortality of caribou from hunters was less than 5%.
6) What distinguishes a hypothesis from a theory?
A
A theory is a scientific explanation
B
A theory is backed up by repeated observations and tests
C
A theory explains a natural phenomenon
D
A theory is testable
7) In a scientific experiment how many independent variables should be tests at the same time?
A
three or more
B
none
C
two
D
one
8) What would a scientists use to show comparisons between variables?
A
hypothesis
B
computer
C
conclusion
D
graph
9) Writers use similies as literary devices for comparisons. Which factor in an experiment would a scientist use like a simile?
A
Constant
B
Control
C
Dependent variable
D
Independent variable
10) A science fair project showed that earthworms move away from light. This statement should be classified as
A
a conclusion
B
a hypothesis
C
an inference
D
a prediction
*select an answer for all questions
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