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Scientific Method
Scientific Method
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Unit 1 Quiz 1 on Scientific Method (IV, DV, CV, Control Group, POHEC, and graph interpretation)
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1
How does using different types of metal in a generator affect the rate the motor spins? IV is
rate of motor spin
person running tests
the generator
metal in the generator
2
How many variables should a good scientist change in an experiment?
three
one
two
four
3
What is the IV for this experiment?
Type of Pesticide
average plant growth
Number of plants with beetle damage
Number of weeks observed
4
What's the control group for this experiment?
number of weeks observed
original pesticide group
new beetle pesticide
number of plants with new beetle damage
5
Does fertilizer have an effect on plant growth? This is a
conclusion
hypothesis
prediction
problem
6
How do lenses of different sizes affect the size of the object being viewed? Identify DV
the ruler
different sized lenses
the person measuring
size of object being viewed
7
The one factor in an experiment that is manipulated/changed or altered by the scientist.
Independent variable
Dependent variable
8
If all 700 of your data points were 10-20, and
one
is 47...what would probably explain this?
human error
the numbers really were that different
there is no possible explanation
someone lied
9
Testing a hypothesis is called
an experiment
the SI System
a conclusion
a theory
10
The recorded measurements taken during an experiment are
variables
data
controls
conclusions
11
Qualitative data is
Data that is measured: 23 cm
data that is observed example: color/dull/bright
12
In a controlled experiment, how many variables should be tested at one time?
3
2
1
4
13
During an experiment, results from an experimental group should be compared with a ___.
independent variable
control group
dependent variable
hypothesis
14
What might be a logical constant/controlled variable for this experiment?
all are appropriate constants/CVs
amount of pesticide sprayed
type of plants used
number of weeks observed
15
Why is it important when running an experiment to run multiple trials?
This increases validity of an experiment
Because the teacher told you to.
It means you found the right answer.
More trials means everyone will trust your answer.
16
Your ‘educated guess’, and possible explanation for a problem is called your
corroboration
hypothesis
prediction
guess
17
What is the dependent variable for this experiment?
Number of Tests
no music group
Number of test answers correct
Type of music
18
A statement that can be tested and includes the words "If" and "then" is a
hypothesis
observations
experiment
variable
19
If mice are exposed to microwaves, then they will become extra strong. Identify the next step.
draw conclusions
identify a problem
design and run an experiment
make a hypothesis
20
Scientists gather information using
inferences
research
all of the above
Their five senses
21
When running an experiment, this is the group that you are investigating/testing.
dependent variable
independent variable
controlled variable/constant
control group
22
If you have a data point that doesn't fit the rest, this is called a(n)
constant
variable
outlier
valid experiment
23
Data that can be accurately measured. Example the height of the plant is 46.3 cm
qualitative data
quantitative data
