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Review of the Scientific Method
Review of the Scientific Method
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Basic scientific method #HS chemistry
Flashcards
15 cards
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Practice quiz
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Questions
15
Answers
1
Why should you do background research on a topic
before
designing an experiment?
To see if your question has already been answered.
So you can design a better experiment.
In case there are any safety issues.
All of the above
2
Hypothesis: increased light increases plant growth. What is the independent variable?
Plant growth
The amount of soil
The type of plant
Amount of light
3
Which of the following statements about control variables is
true
?
Control variables and dependent variables are the same.
Control variables remain constant.
Control variables are what you are measuring.
Control variables are what you change.
4
You record how much a player can bench press each day. Best way to show this gradual change is
in a bar graph
in a line graph
on a pie chart
in a written paragraph
5
What is the
difference
between an experimental group and a control group?
The experimental group is usually larger than the control.
Experimental group is subjected to the independent variable.
The experimental group is always controlled.
The control group is subjected to the independent variable.
6
Hypothesis: Protein shakes increase player strength. What is the
dependent
variable?
Coaching
Training regimen
Player Strength
Shakes
7
This is where you state whether or not your data supported your hypothesis.
Graph
Conclusion
Procedure
Background research
8
Which of the statements below is an appropriate hypothesis?
See what happens when you heat a chemical reaction.
The effect of cold vs. heat on a chemical reaction.
The chemical reaction is fast.
Heating increases the speed of a chemical reaction.
9
CHALLENGE: You monitored players' weights as part of the experimental design. Is that OK?
Yes. It can support your original hypothesis.
No. Players' weights are not part of your hypothesis.
Yes. It didn't hurt and can give info for future expts.
No. You should only measure the dependent variable.
10
Which of the following does
NOT
have to be considered in a good experimental design?
It must test the test the hypothesis.
It must be reproducible.
It must prove the hypothesis.
The dependent variable is clearly defined.
11
Hypothesis: Protein shakes increase player strength. What factors might you
control
?
Coaching tactics
Players' training regimen
All of the above would be good to control
Players' calorie intake
12
You calculate the average change in bench press weight for the shake group and control group.
compare these groups with a line graph
compare these groups with a bar graph
you cannot compare these groups
compare these groups with a pie chart
13
What is the
independent
variable?
The outcome
The variable being tested and changed
The variable measured
When you hold something constant
14
Hypothesis: Protein shakes increase player strength. You should divide your subjects by:
One group trains everyday, one does not.
One group drinks shakes, one does not.
The group that doesn't drink shakes lifts weights.
Everyone who drinks shakes also lifts weights.
15
What
begins
the scientific method?
Hands
A problem, question or observation
A degree
Tools
