Variables One
The variable that the investigator changes
The type of variable that stays the same in a science investigation
control
A series of steps used in science to solve problems
scientific method
An educated guess based upon a prediction that can be tested.
hypothesis
Data that describes something.
qualitative data
What could be a control for this investigation?
How does the amount of sunlight affect plant height?
Any!
Things that must be kept the same:
amount of water, type of plant, location of plant, etc...
The variable that the investigator records as data due to the change in the manipulated variable
dependent variable
Which is NOT part of the scientific method?
Question
Answser
Hypothesis
Claim
Data analysis
answer and claim
Data that describes what is sensed by the senses, describes the quality of something.
An explanation made about the observation.
inference
What is one control for this investigation?
Jenny wants to know how many drops of water fit on a penny with water that contains different amounts of salt:
How are the number of drops a penny holds affected by the amount of salt in the salt water?
same penny, location experiment was done, temperature of water etc...
What could be a control for this investigation?
How does the type of music make the participants feel?
Things that would need to stay the same:
music volume, same participants, location the music was played, etc...
This part of the scientific method comes at the end of the investigation.
scientific conclusion
What is seen during the experiment that is measured with your senses or a tool.
observation
A factor in an experiment that stays the same.
What is the independent variable for this investigation?
How is weight gain affected by the number of calories a person consumes?
Number of calories
What is the dependent variable in this science question?
Does the amount of copper vs nickle vs zinc affect the pennies weight?
To come to a scientific conclusion, what 3 things need to be done first?
hypothesis, experiment and data analysis
numerical data
quantitative data
The most logical explanation of why something happens in science, strongly supported by multiple lines of evidence.
scientific theory
What is the independent variable in the following science question?
How does the amount of water affect plant growth?
amount of water
What is the dependent variable in the scientific question?
How does premium vs mid-grade fuel affect how fast the car goes from 0-60mph?
What are the steps of the scientific method?
Hypothesis, experiment, data analysis and conclusion
The variable in an experiment that is changed by the experimenter.
independent variable
The variable that is often recorded as data in the data table.
dependent variable