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Scientific method and experimental errors Flashcards | StudBud
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Scientific method and experimental errors
Scientific method and experimental errors
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Basic scientific method & errors questions
Flashcards
24 cards
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1
A good hypothesis must
Be testable
All the above
Make a prediction
Be based in logical observations
2
Which of the following is the more correct definition for: reading error?
When a measurement is read incorrectly because of the scale
When a measurement is read correctly
Both 2 and 3
Reading measurements inaccurately
3
This is the type of graph that requires a key
A multi-line graph
A bar graph
A line graph
All graphs require a key
4
A control group helps an experiment because it give the scientist
More participants
None of the above
More work
A group to compare experimental results to
5
Which of the following has the lease number of significant figures (least accurate reading)?
5.55m
5.092m
3.20m
5.03m
6
The effect of amount of light on plant growth. What is the IV?
Plant growth
Amount of Light
The amount of Soil
The type of plant
7
Select the correctly written hypothesis
If you train dogs more they might be better.
If you treat dogs well they will be friendly.
What happens if you train dogs?
Dogs are friendly
8
What is the difference between the experimental group and the control group
The experimental group gets results
The experimental group is independent
The experimental group get the IV done on them
The experimental group is larger
9
Roosevelt football team wants to know protein shakes makes you stronger. What's the DV here?
Shakes
The age of players
The coach
Player Strength
10
The purpose of a procedure is to....
Make you do more writing
Show others the steps you took to do the experiment.
Keep other people from copying
Make sure that the participants know exactly what's happenin
11
Which scenario would be the most credible and accurate?
Controlling all variables and doing one trial
Not controlling variables and doing 100 trials
Controlling variables and doing 100 trials
Not controlling variables and doing one trial.
12
Which of these is an example of a parallax error
Standing too high above a beaker while trying to measure
Not zeroing the scales to you read it inaccurately
Placing your eyes at the same level as a beaker
Standing at eye level with a measuring cylinder
13
What is the first thing you do if you are in the lab and you spill chemicals on your hands?
Get the fire extinguisher
Pull the chemical shower
Tell the teacher
Wash your hands
14
This is when you state whether your hypothesis was correct, your errors, and what you do next.
Problem
Graph
Procedure
Conclusion
15
How is a controlled variable different than the dependent variable?
Controlled variables are the outcome.
Controlled variables are the same as dependent variables.
Controlled variables are what the scientist is testing.
Controlled variables remain constant.
16
What is a zero error?
When an instrument has been incorrectly set up
When you don't start from zero when measuring something
When an instrument has been correctly zeroed
When an instrument hasn't correctly been zeroed
17
What is the independent variable
When you hold something constant
The outcome
The variable being tested and changed
The variable measured
18
The dependent variable is the.....
Results
Stays the same
Changed by the scientist
Is known before the experiment
19
All of these need to be part of any graph you create EXCEPT
Equal intervals
A title
Colors
Labeled axis with units
20
The effect of the amount of light on plant growth. This would be a good....
Independent variable
Dependent variable
Title for a graph
Hypothesis
21
What do you need in order to begin the scientific method?
Tools
A problem/question
Hands
A degree
22
Which of these is the SI unit for length?
m
Km
mm
cm
23
If an experiment cannot be repeated by other people or scientists then it's
Not reliable
Perfect
a good experiment
Reliable
24
John tests whether his rap skills are the best in school. Why would you not trust his results?
He is biased
He is not a scientist
He controlled too much
He hates country music
