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100
A variable is any factor that can have more than _______ value(s).
What is one?
100
A logical conclusion based on information available to scientists is ... a. a prediction b. an observation c. an inference
What is c. an inference?
100
This term is most similar in meaning to the term "inference." a. control b. prediction c. conclusion
What is c. conclusion?
100
What scientists believe happened to the Ice Man can only be supported or not supported by the evidence. A testable explanation of why we think something happened is this.
What is a hypothesis?
100
Variables are any ___________ that can change the outcome of an experiment.
What is factor?
200
In Tim & Moby's experiment on their fig plants, they gave three plants different amounts of water each week and one plant no water at all. The plant that was not watered was the ________________ group.
What is control?
200
When scientists design a controlled experiment, they have to identify factors that can affect the ____________ of an experiment.
What is outcome?
200
Identify the independent variable in this question: Which type of liquid will dissolve the color off a skittle the fastest?
What is the type of liquid?
200
The effects of changing the independent variable are observed and recorded for the ___________.
What is experimental group?
200
The ____________ is the factor that a scientist observes or measures during an experiment.
What is dependent variable?
300
The control group contains the same factors as the experimental group, but the _______________ is not changed or included.
What is independent variable?
300
In controlled experiments, there are two kinds of ___________.
What are variables?
300
The _________ and ____________ groups are the two groups in a controlled experiment.
What is experimental and control?
300
Error analysis is used to ... a. make a prediction b. eliminate false conclusions c. design an experiment
What is b. eliminate false conclusions?
300
BONUS: Professor Oeggl was worried that his stomach samples from the Ice Man were contaminated with pollen from around his laboratory. He set up a ______________ experiment to see if the pollen was contamination or from the Ice Man.
What is controlled?
400
Identify the dependent variable in this question: Which type of liquid will dissolve the color off a skittle the fastest?
What is the time it takes for the color to dissolve?
400
A controlled experiment has ________ groups.
What is two?
400
Explain how the Iceman's digestive tract allowed Professor Oeggl to reconstruct the Iceman's last journey.
The pollen found in the Iceman's stomach cells was whole. That pollen only grows in low elevations. Iceman was found at a high elevation. So, the Iceman had to have traveled from a lower elevation to a higher elevation during the last day of his life.
400
The independent variable is the factor that is changes by the investigator to _____________ how it affects a dependent variable.
What is observe?
400
BONUS: When a scientist learns new information about a theory, what happens to that theory? (Example: scientists first theorized that the Iceman died from hypothermia (freezing to death), but when they found the arrowhead in his shoulder...)
The theory must change to include the new evidence.
500
Describe how independent and dependent variables are related.
They are like a cause-and-effect relationship. When the independent variable is changed, the dependent variable changes.
500
BONUS! This is the first step of the Scientific Method.
What is Ask a Question or Define a Problem?
500
When the ____________variable is changed, it causes the ___________ variable to change.
What is independent, dependent?
500
Name the 6 steps of the Scientific Method in order. (Think about the Iceman Case Study.)
1. Ask a Question/ Define a Problem 2. Predict (what next) & Hypothesize (why) 3. Test! 4. Analyze Results 5. Draw Conclusions 6. Communicate Results
500
Without _____________, it is difficult to know if your experimental observations result from the variable you are testing or another group.
What is control group?