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Scientific Method
Variables
Observation vs. Inference
Variables II
100

There is only one true way to do the Scientific Method and it has only 6 steps.  You must follow this one single chart exactly the same way every single time and cannot go back to repeat steps. True or False?

FALSE

100

What is the conclusion

states if your hypothesis is right or wrong; state the results

100

What is an inference?

Using your observations to make a guess about an object or an outcome.

100

When Krusty gave his customers the new sauce, they produced less gas. What is the independent (Manipulated) variable? What is the dependent (responding) variable?

Independent Variable- New Sauce

Dependent Variable- Amount of gas produced

200

What do scientists do to test a hypothesis?

Perform an experiment

200
What is an independent variable?
The variable in the experiment that you change to test.
200
This surface feels slippery. Is this statement an observation or an inference? Why?
Observation, you are using your sense of touch to get information.
200

When Mr. Lee use more force to throw the ball, the ball traveled further across the room. List two control variable for that situation.

style of throw

type of ball

location point of release

300

"I think that flowers grow better with fertilizer because they get the nutrients they need."  What part of the scientific method does this represent?

hypothesis

300
What is a dependent variable?
The dependent variable is the variable that responds to the independent variable.
300
This footprint was made by a dinosaur. Is this statement an observation or an inference?
Inference, you are guessing its a dinosaur that made the footprint.
300

When George increases the amount of time to study, usually his test scores increase as well. What is the independent variable? What is the dependent variable?

Independent (Manipulated) Variable- amount of study time

Dependent (Responding) Variable- test score

400
In the penny lab, list 3 ways you controlled the experiment

Same type of coin, same surface, same dropper, same liquid, etc

400
What type of variable represents "cause" and what type of variable represents "effect"?
Independent Variable (cause) -------> Dependent Variable (effect)
400

There are 36 students in room 1105. What type of observation is this and why?

qnt; uses a number to describe

400

In the Penny Lab we did in class, state the Independent Variable and the Dependent Variable.

Independent Variable:  Side of the Penny

Dependent Variable:  Number of drops

500

Define Variable and state three types of variables in an experiment.

Variable-anything that can change or stay the same in an experiment

Control, Independent, Dependent

500
What makes an experiment considered a controlled experiment?
The experiment has one independent variable (cause), one dependent variable (effect) and the rest are control variables.
500

When can you use observation in the Scientific Method? When can you use inference in the Scientific Method?

Observation- Research, Perform an Experiment, Analyzing Data Inference- Form hypothesis, Form conclusion

500

Mr. Han thinks that the "Quantum" Duracell battery has more energy than the regular Duracell battery. He wants to test out his hypothesis by doing the following experiment. He will use one new "Quantum" battery to power a flashlight and a old regular battery to power a clock. He leaves the flashlight and clock on until it turns itself off. He will record the time. How can you make this experiment into a controlled experiment?

Both batteries are new. Both batteries being used with the same device. Only thing that changes is the type of battery.