Variables
What is a variable that you change in order to see how it affects another variable?
Independent variable
What type of lab injuries should be reported to the teacher?
ALL
What is the first step of the scientific method?
Ask a question
What is the number repeated the most?
Mode
What group in an experiment is the one that receives no special treatment and is used as a comparison?
Control group
What is a variable that stays the same for both the experimental and control groups?
Controlled variable
When is eating lab supplies allowed?
NEVER
The scientific method is linear; it has a starting and stopping point.
False
What is the middle number?
Median
How many independent variables should be in an experiment?
1
What variable is the one that is measured?
Dependent variable
How should chemicals be smelled?
Waft
Does the scientific method ever lead to new hypotheses?
Yes
What is the spread of numbers--largest number minus smallest number?
Range
Anna plants 20 sunflower seeds. Ten of the seeds are given fertilizer. She times how long it takes the seeds to sprout. What is the dependent variable?
Time
What variable is located on the x-axis?
Independent variable
What safety equipment is found in our lab?
shower, eyewash, fire extinguisher
What is an educated guess?
Hypothesis
What is found by adding all the numbers and then dividing by the number of numbers?
Mean
Johnny plants 20 basil plants. Ten of the plants receive liquid fertilizer. Ten of the plants receive granular fertilizer. Johnny measures the plants' growth. What is the independent variable?
type of fertilizer
What variable is on the y-axis?
Dependent
Should lab directions be read completely before beginning the lab, or should they begin a step at a time as you complete the steps?
READ completely before experimentation begins
When is research done--before or after the hypothesis?
Before
50 kg = _______ g
50,000 g
Her test sample is too small.