A valid experiment may have only one ________ variable.
manipulated (independent) variable
100
What is the measurement system that scientists around the world use?
metric system
100
Which variables stay the same throughout the experiment?
control variables (constants)
100
What is another name for the manipulated variable?
independent variable
200
What is a conclusion based on an observation?
inference
200
What is an “if” “then” statement that makes a prediction about the investigation that is to take place?
hypothesis
200
When measuring length in a science class, should you use inches or centimeters?
centimeters
200
Which variable is measured and recorded as data in an experiment?
responding (dependent) variable
200
What is another name for the responding variable?
dependent variable
300
What is the variable that the scientist changes?
manipulated (independent) variable
300
What are step-by-step instructions that ensure your experiment can be repeated?
procedures
300
_______ is the measure of the amount of matter in an object?
mass
300
In an investigation that looks at the effect of the use of a hair cream on the speed of hair growth, what is the responding (dependent) variable?
speed of hair growth
300
What is an example of inaccurate measurement?
- Wrong label
- Incorrect unit of measure
- Incorrect tool
- Inability to accurately measure
400
What is a proposed explanation or interpretation that
can be tested by further investigation?
hypothesis
400
Using the wrong equation is an example what type of investigational error?
computational error
400
_________ is the measure of the amount of space an object takes up?
volume
400
In the question, “What is the effect of a lack of sleep on weight gain?” What is the manipulated (independent) variable?
lack of sleep (or amount of sleep)
400
Having more than one manipulated variable is an example of what type of error?
flawed investigational design error
500
What is the variable that is affected by another variable?
responding (dependent) variable
500
Conditions that could influence the outcome of an investigation and therefore must be kept the same
control variables (constants)
500
What is the formula used to find volume for rectangular prisms?
volume = length x width x height
500
If you were designing an experiment to test the hypothesis, “If the temperature of water is increased, then the amount of solute that can be dissolved will increase”, what is the manipulated (independent variable)?
temperature of the water
500
The group that does not receive treatment is the ______ group.