Name that Variable!
Anything that can affect an experiment is this. There are three types.
Variables
I want to run an experiment on the following question: Can different scents in the room affect how long people sleep? What is my dependent variable?
How long people sleep
The first thing that must be done in the scientific method; what the scientist do when they look at the world around them
How do you format a hypothesis?
If Then Because
What is the scientific method?
A way to experiment
The one thing I change in an experiment; this is the thing being tested
Independent Variable
In the following question, what is the independent variable? Does eating school lunch affect how alert people are in their afternoon classes?
Eating school lunch
The part of the scientific method where I make a guess about what might happen in an experiment
Hypothesis
What part of the experiment follows the IF statement in a hypothesis?
Independent variable
Name at least 4 control variables for the following experiment: Does soil type affect plant growth?
sunlight, temperature, water, pot, type of plant
The variable that responds to the change; this is what you measure
Dependent Variable
List at least 3 control variables for an experiment based on the following question: Does the saltiness of water affect how fast it freezes?
amount of salt, amount of water, temperature of freezing
A test done to check a hypothesis
Experiment
What part of a hypothesis will follow the word THEN?
The dependent variable
How many nieces and nephews does Ms. Oliver have?
4
The number of independent variables tested in any experiment
1
Write a hypothesis for the following question: Does the amount of tv people watch affect their school attendance?
If students watch more tv, then their attendance will go down because they will be tired and accidentally sleep in.
What scientists do as they experiment
Collect data
What must a scientist do before making a good hypothesis?
Research
What is the difference between qualitative and quantitative data?
Qualitative is an observation, quantitative is a measurement or number
All of the things that you keep the same because they could effect your experiment
Control Variables
What is a testable question you could make based on sleep and test scores?
How does the amount of sleep a person gets affect their test scores?
Scientist must do this after collecting their data and forming a conclusion
Communicate results
Give a hypothesis for the following question: How does the slope of a ramp affect the distance it will travel?
If I make the ramp higher, then it will travel farther.
What is data?
Observations and measurements from an experiment