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Scientific Method
Scientific Method
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Year 9 Science Scientific Method test
Flashcards
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Answers
1
When writing a conclusion at the end of a practical report you should always
say you have proven your hypothesis if the results are good
check to see if the results support or negate the hypothesis
reject the results if they don't agree with your ideas
ignore the results if they do not support the hypothesis
2
Continuous, quantitative data is best presented using a
column graph
line graph
pie chart
histogram
3
Repetition of experiments
costs too much money so scientists don't bother
is not done regularly because it is too hard
helps to reduce the effects of uncontrolled variables
reduces the validity of your work
4
Validity in experimental design means that the experiment
Tests a variety of outcomes
Takes into account that the results might contradict the aim
Tests what it set out to test
Does not allow for sources of error
5
Repeatability requires
same measurement instrument and procedure, same observer, same conditions
same measurement instrument and procedure, different observer
same measurement instrument, different procedure, same observer
same measurement instrument and procedure, different conditions
6
When testing the effects of light intensity on plant growth, you should
make sure your test plants all get the same amount of water
have ten plants, all growing in different temperatures
use as many different species of plants as possible
have two plants, one in the dark and one in the light
7
An hypothesis is
a suggested reason for an observation
an uneducated guess
an explanation for an observation
an explanation for a conclusion
8
The dependent variable is not
measured by the scientist
important because it depends on what you are doing
deliberately manipulated by the scientist
known as the responding variable
9
When reading from an analog voltmeter, a potential source of error would not be
parallax error
human error
no error
reading error
10
During an experiment, a sudden thunderstorm altered the humidity. This has potental to be what type of error?
Systematic erro
Personal error
Random error
Parallax error
11
A control group in an experiment provides a
way to know which variables need to be controlled
source of error
basis for comparison
group that is very different to the rest of the experiment
12
The scientific method involves
making an observation, forming an hypothesis then testing it
testing a hypothesis but never repeating the experiment
making an observation and proving a theory from it
formulating a theory and then testing it
13
The independent variable is
not important because it is independent of what is happening
measured in the same units as the dependent variable
the variable that is measured as a result of what happens
also known as the manipulated variable
14
When testing the effects of light intensity on plant growth,
light is the dependent variable
plant growth is not the dependent variable
type of plant is the dependent variable
light is the independent variable
15
A controlled experiment is one where
the scientist has complete control over what is happening
at least two variables are allowed to fluctuate
the scientist attempts to control all variables
all variables are kept constant the whole time
16
An example of a quantitative observation is
how vigorously a student is performing step-ups
the number of times per second a woodpecker pecks wood
what shade of red an apple is
how loudly a bird is singing
