Variables
Define independent variable
The part of an experiment taht you change to purpose to measure it's effects
True or false: You should heat liquids in a test tube with the tube pointed towards you.
False, away from anyone
What is a variable?
A factor that can change or vary
Should you return unused chemicals to their bottles?
No, never do that.
If I am measuring the effect of temperature on the growth of a tree, what is the dependent variable?
The growth of a tree
Define dependent variable
The part of the experiment you measure
Should you wear your hair up (in a ponytail or with a headband) while in a lab?
Yes, either will work.
What is the first step of the scientific method?
Asking a Question
True or false- we can throw chemicals into the sink.
False
I am measuring the effect of the amount of coffee on my heart rate, what is the independent variable?
The amount of coffee.
Define "Constant"
A variable in an experiment that should remain the same to get good results
True or false: Running in a lab is allowed.
False, never run, you could break something
What steps should you do before testing with an experiment?
Ask a question, make observations and gather data, form a hypothesis
True or False- we can have unnecessary materials sitting on our lab tables
False, clear all unnecessary materials
What was the independent variable in our nickel experiment?
Adding soapy water to the droplets
If I am measuring the effect of the amount of fertilizer on plant height, what is the independent variable?
Amount of fertilizer
True or False- eating lab materials is encouraged.
FALSE- EAT NOTHING FROM LABS UNLESS TOLD OTHERWISE
What is the last step of the scientific method?
Communicate your results
True or false- we can touch chemicals in labs with our hands
False, they could be corrosive
What was the dependent variable?
The number of drops that fit on the nickel
If I am measuring the effect of hours of sleep on test scores, what is the dependent variable?
Test scores
What should always be worn when using chemicals or heat in a lab?
Goggles
Why are specific procedures important to the scientific method?
Specific procedures allow anyone to replicate an experiment to get similar results
Should we eat food while in labs?
No, never,
I am measuring the effect that students playing Jeopardy has on their future quiz scores. Tell me both the dependent and independent variables.
Independent- Students playing Jeopardy
Dependent- Future quiz scores