Show:
Experimental Design
Method Madness
Bean Lab
Practice Makes Perfect
Vocabulary
100
A good hypothesis is testable or not testable?
What is testable.
100
What do you call a prediction about an observation?
What is a hypothesis
100
In the salinity lab, which group of beans was the EXPERIMENTAL GROUP?
What is the salty beans.
100
A scientist is researching possible cures for cancer. Why would it be important for the scientist to record and publish her procedure? a. So she can hide it and claim it as her own once she finds a cure b.So that no other scientists can copy her work c. So that other scientists can repeat her experiment and give it validity if they get the same results d. So that her boss will be able to make sure she is doing her work
What is C: so that other scientists can repeat her experiment and give it validity if they get the same results
100
What is the group called that is "normal" or stays the same and is used for comparison in an experiment?
What is the control group
200
What is another name for the independent variable?
What is the test variable
200
An organized way to solve problems and draw conclusions is also known as the _________________ _____________.
What is the scientific method
200
In the salinity lab, which bean group was the CONTROL GROUP?
What is fresh beans.
200
In order to maintain validity, what is a step a scientist should take after completing an experiment and developing a theory? a. Avoid speaking publicly about the theory for several years b. Continue to repeat the experiment until a different result occurs c. Allow other scientists to view records and replicate the experiment d. Send the information to the government first
What is C: allow other scientists to review the records and replicate the experiment.
200
What is the group called that you vary or change something in? (the group you actually test)
What is the experimental group
300
The dependent variable is also known as the.....
What is the outcome variable
300
What would you do after an observation but before making a hypothesis?
What is research
300
Name three controls of the bean lab.
What are the number of seeds, type of seeds, location, bag, paper towel, time in drawer, lack of light...
300
Josh wants to know if air temperature affects the chirping of crickets. He thinks that they chirp faster on warmer nights. To find out, he put three groups of equal numbers of crickets in the same type of shelter and gives them equal amounts of food, water, and light. To test his hypothesis, he keeps one group at room temperature (25 degrees Celsius), warms another to 30 degrees Celsius, and cools the last to 20 degrees Celsius. At these temperatures, he listens to each group one by one and records the number of cricket chirps in one minute. What is the INDEPENDENT variable? a) chirping of crickets B) amount of light C) air pressure D) air temperature
What is D: Air Temp
300
What is another name for the outcome variable?
What is the dependent variable
400
Which of the following is NOT based on the scientific method? Hypothesis, Analysis, Opinion, Conclusion, Research
What is opinion
400
In which part of the scientific method would you interpret the results in an investigation?
What is in the analysis.
400
Replication is doing an experiment over and over to make sure the results are reliable and valid. How was the bean lab replicated?
What is each group or person doing the same experiment.
400
True or False: Changing more than one variable at a time in an investigation is a good science practice.
What is False!!!!!! We ONLY change ONE thing and that is the INDEPENDENT VARIABLE!!!!!!!!!!!!!!
400
What is the name of the thing you change to see if it has an effect?
What is independent variable
500
True or False: In order for a result and conclusion of an experiment to be valid, it must be replicated by others.
What is true
500
In which part of the scientific method would you explain if the data supports or fails to support the hypothesis?
What is the conclusion.
500
The salty water was the __________ of the lab while growth (germination) was the _______________ of the lab.
What is independent variable and dependent variable
500
Randy's science teacher is giving a demonstration to show how metal reacts with different acids. He places a small piece of metal in each of the 3 beakers containing a solution of different acid. He adds a piece of metal to a 4th beaker that contains only water. What group is the fourth beaker?
What is what is the control group
500
Something observed or measured that responds to or changes because of the test variable
What is the dependent variable