Lab Procedures and Safety
Variables
Controlled Experiment
Scientific Inquiry
Random
100
You always wear these to protect your eyes when working with chemicals and/or fire
What are goggles
100
What are the 2 types of variable?
What is manipulated and responding (independent and dependent)
100
What is the definition of a controlled experiment
What is an experiment in which only 1 variable is changed at a time
100
What do you use scientific inquiry for?
What is solving problems by conducting experiments
100
What is a field study?
What is research conducted in the natural world
200
These are symbols that warn of possible dangers in the lab and remind you to work carefully
What are safety symbols
200
The variable that is being tested
What is the manipulated variable
200
How did we control the diet coke experiment?
What is by dropping the mentos the same way (other possible answers; only need 1)
200
What is the difference between a hypothesis and a prediction?
What is a hypothesis is testable
200
The ability to understand scientific terms and illustrations is this
What is scientific literacy
300
At the end of a lab, you know where to dispose of chemical waste by asking this person
Who is your teacher
300
You are experimenting to see if Charmin toilet paper is really more absorbant than Quilted Northern. To test your hypothesis you add water to each brand and record how much each type can hold before leaking. State the responding variable and manipaulate variable.
What is toilet paper type (manip.) and amount of water (resp.)
300
What is the point of controlling an experiment?
What is to ensure that our results are telling us only about what is being tested
300
The 5 steps to the scientific method are:
What is 1) question/observation, 2) hypothesis 3) experiment 4) record data 5) analyze results in a conclusion
300
What is an example of a field study?
What is studying monkeys in the jungle (answers will vary)
400
The correct way for testing and odor is to...
What is to waft the vapor to your nose. Do not directly inhale the smell!
400
The variable that reacts to the variable being tested
What the responding variable
400
Can an experiment be perfectly controlled?
What is No; there is always the possiblity of experimental error
400
The process of scientific inquiry begins with this
What is a question and/or observation
400
A friend claims that a pot of tap water comes to a boil more quickly than a pot of cold tap water. Identify the manipulated variable
What is the type of water
500
If there is an accident in the lab, the correct procedure is to what?
What is to tell the teacher immediately!
500
What are the mnemonic devices for the 2 variable types and what do they stand for?
What is MIX: manipulated, independent and x-axis AND DRY: dependent, responding and y-axis
500
Thinking back to our toilet paper experiment (Charmin vs. Quilted Northern). How would you control that experiment?
What is by making sure you have the same amount of toilet paper (other possible answers; only need 1).
500
When you have dessert after lunch, you don't get hungry in midafternoon. What testable hypothesis can you develop from your observation?
Answers may vary What is "that eating dessert keeps a person full longer compared to someone that does not eat dessert"
500
A friend claims that a pot of tap water comes to a boil more quickly than a pot of cold tap water. Identify the responding variable
What is the time it takes to the water to boil