This is what a scientists wants to know or a problem they want to solve.
What is a question.
100
Identify the IV in the following hypothesis:
If I eat more sugar, then my heart rate will increase.
What is the amount of sugar
100
Belle is testing how sugar affects attention span. She gives 10 kids 1/2 cup sugar and gives 10 kids no sugar.
Which is her experimental group?
What is the group receiving a half cup of sugar
100
Javier is designing an experiment. He develops a question and a hypothesis. Then, he writes his conclusion.
Is his study valid?
NO - he needs to collect data
200
This is what the scientist thinks is going to happen. (Always written in If/Then format!)
What is a hypothesis
200
Identify the dependent variable in the following hypothesis:
If I feed my cat more treats, then she will gain weight.
What is weight.
200
Dr. Laura gives 30 people an antibiotic and gives 30 people a sugar pill (placebo).
What is the control group?
What is the sugar pill (placebo)
200
Lena tests the effects of different candy on blood sugar.
She concludes that the more candy you eat, the higher your blood sugar. Is this valid?
NO
300
Define the scientific meaning of trend
What is the overall direction or tendency of a data set
300
Identify the IV in the following experiment:
Jerry wants to know how brushing your teeth affects cavities.
What is brushing teeth
300
Rakan wants to know how drinking caffeine affects test scores.
What would be the control group in this experiment?
Drinking no caffeine before the test
300
Lena tests the effects of different candy on blood sugar.
She concludes that chocolate candy increases your blood sugar more than non-chocolate candy. Valid?
NO
400
This is the variable that scientists change in an experiment.
What is the independent variable (IV)
400
If you lift more weight, then you will gain more muscle mass.
You run the experiment and collect data. You're ready to make a graph. What should you put on the x-axis?
What is weight lifted.
400
Rakan wants to know how drinking caffeine affects test scores.
What could two experimental groups be in this experiment?
Various answers:
Drink coffee, drink soda
Drink coffee, drink tea
Drink various amounts of ...
400
Lena tests the effects of different candy on blood sugar.
What would be a valid conclusion?
Snickers increases your blood sugar more than Twix or Starburt
500
What is a scale?
The numbers on the graph that cover a range of data points. THEY ALWAYS GO UP IN EVEN INCREMENTS!
500
Eric is investigating the effect of sleeping on test scores. He has 30 students take a test after sleeping 5 hours, 8 hours, and 10 hours.
Eric puts "Hours Slept" on the y-axis and "Test Scores" on the x-axis. Is this correct?
YES!
500
Jake has one person run .5 miles, 1 mile, and 1.5 miles and then measures their heart rate.
Why is this experiment invalid?
No control group
500
Lena has one person eat a candy bar, then measures their blood sugar.
What could make her results more valid?