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Independent & Dependent Variables
Vocabulary
Lab Saftey
Lab Equipment
Graphing
100
A Scientist designed an experiment to test the effect of temperature on bacterial growth. He grew three different cultures of the bacterium E. coli under three heat lamps at different temperatures. What was the independent variable in this experiment?
What is temperature .
100
Tyler predicts that if seeds are heated for ten seconds in the microwave before planting them, then they will sprout faster. How long it takes the seeds to sprout is the _____ in this scientific investigation.
What is dependent variable .
100
You should wear safety goggles during every science period. True or False
What is false .
100
What do you hold an hot beaker with?
What is hot gloves .
100
In which step of the scientific method do we want to use graphs?
What is analyze data .
200
A student hypothesizes that green algae will grow fastest when exposed to blue light. To test this hypothesis, the student should design an experiment with which independent variable?
What is the color of light algae are exposed to .
200
A student's experiment showed that earthworms move away from light. This statement should be classified as
What is a conclusion .
200
What is the first thing you should do when you break a beaker in the lab?
What is tell your teacher .
200
What peice of equipment do you use to measure mass of an object?
What is balance or scale .
200
What is important when creating a graph in science?
What is titles, labels, and neatness .
300
If you eat three chocolate chip cookies before a test, then you will get all of the questions correct. Which part of the hypothesis is the dependent variable?
What is how many questions you answer correctly .
300
An educated guess
What is a hypothesis .
300
When you work in the laboratory long hair must be what?
What is tied back .
300
What peice of equipment do you use to hold, boil, and pour liquids into?
What is a beaker .
300
The best graph to use if I want to compare the price of six different cars would be a?
What is a bar graph .
400
Tiffany was investing how fast it took Hayden to react to different sounds. What is the dependent variable?
What is how much time it took Hayden to react .
400
An investigation using scientific methods that test a hypothesis
What is an experiment .
400
The correct way to move around the laboratory is to?
What is walk .
400
What peice of equipment do you use to hold liquids in and observe reactions in?
What is a florence flask .
400
If you wanted to know volume of water in a bottle of soda, you would use?
What is liters .
500
Mr. Green wanted to see how different types of music affected students' pulse rates. She played different types of music: heavy metal, rap, R&B, alternative, pop, country, and classical music. What is the independent variable?
What is the type of music .
500
If you are performing an experiment to see how much salt must be added to water to make an egg float, you should do many _____ to make sure your results are correct.
What is trials .
500
If you see a fire in an apparatus, or a burning liquid, it is best to put it out with?
What is the fire extinguisher .
500
What would you use to lift a small beaker full of boiling water?
What is beaker tongs .
500
When a scientist shares her findings with other scientists, she is?
What is communicating results .