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8th Grade Exam Review Part 1
Test Description: This is review for first semester exam covering science basics.
Instructions: Answer all questions to get your test result.
1) When smelling an odor from a chemical during an investigation, you should
A
dab some on your wrist before smelling it.
B
blow your nose first.
C
waft.
D
take a big wiff.
2) Observations that deal with a number or amount are called
A
manipulated observations.
B
quantitative observations.
C
qualitative observations.
D
operational observations.
3) During an experiment, if you purposely change the temperature to test a hypothesis, the temperature is called the
A
dependent variable.
B
operational variable.
C
manipulated variable.
D
responding variable.
4) One useful tool that may help a scientist interpret data by revealing unexpected patterns is a
A
graph
B
law
C
theory
D
variable
5) What is a way of writing very large or small numbers that uses exponents?
A
scientific notation
B
significant figures
C
data tables
D
graphs
6) The closeness of a measurement to its true value is its
A
significant figures.
B
accuracy.
C
estimate.
D
precision.
7) The significant figures in a measurement include
A
only the last digit in a measurement.
B
only the digits that have been measured exactly.
C
the digits that have been measured exactly, plus one digit whose value has been estimated.
D
only the digit whose value has been estimated.
8) How do scientist investigate a problem in the real world?
A
They conduct field studies.
B
They use lab rats.
C
They conduct online surveys.
D
They watch reality tv.
9) The best graph to use to show percents as a whole is a
A
column graph
B
bar graph
C
line graph
D
circle graph
10) When scientists create a representation of a complex process, they are
A
classifying.
B
making models.
C
inferring.
D
predicting.
*select an answer for all questions
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