Show:
Before the Experiment
Variables
Groups
Error
Random Stuff
100
A hypothesis always has THREE words, what are these words?
What is IF, THEN, and BECAUSE
100
Remember Ms. Miller's stink breath experiment? Ms. Miller thinks that if students brush their teeth for a longer amount of time, then their breath will stink less. The stink of students' breaths is an independent or dependent variable?
What is the dependent variable
100
In performing an experiment there are always two types of groups experimental groups and a control group, which group or groups do you change the independent variable in?
What are the experimental groups
100
Name one reason why it is important to minimize error in an experiment.
Errors in experiment lead to 1) Wrong data OR 2) Wrong conclusions
100
What step of the scientific method is it when you say whether your hypothesis was correct and incorrect and use data to support it?
What is the conclusion
200
Remember Ms. Miller's stink breath experiment? She thinks that if students spend more time brushing their teeth their breath will stink less. What is the testable question for this experiment (Use format Ms. Miller taught you).
How does the amount of time students spend brushing their teeth affect the stink of their breath?
200
The variable being tested or changed in an experiment is the independent or dependent variable?
What is an independent variable
200
In every experiment there are two types of groups - experimental group(s) and a control group. Which group does not test the independent variable?
What is the control group
200
What is one way to minimize error in an experiment and create more reliable data?
What is repeated trials
200
Define Hypothesis in your own words.
"educated guess", "prediction", "what you think is going to happen before the experiment"
300
What is the format Ms. Miller taught you for writing a testable question?
How does the (independent variable) affect the (dependent variable)?
300
The variable being measured in an experiment is the independent or dependent variable?
What is a dependent variable?
300
Ms. Miller wants to test how different types of music affect plant growth. She makes three groups: 1) 10 plants that "listen" to RDX 2) 10 plants that "listen" to Miley Cyrus 3) 10 plants that do not "listen" to any music What type of group is group #2 - experimental or control?
What is an experimental group
300
Ms. Miller wants to do an experiment to see if how much her students eat for breakfast in the morning will affect their average test grades. She makes all her sixth grade classes eat 500 calories in the morning, she makes all her seventh grade classes eat 200 calories in the morning, and she makes all her eighth grade eat nothing in the morning. She gives all grades the same test, and takes the average score of each grade. Her data shows that the average test grade for sixth grade is 75%, the average test grade for seventh grade is 85%, and the average test grade for eighth grade is 95%. What is a possible source of error in Ms. Miller's experiment (Hint: What did she not keep constant - the independent variable should be the only thing that is changing)?
Ms. Miller tests across different grades, it is possible that the older students will do better than the younger students just because they know more.
300
Put these steps of the scientific method in order from first to last - conclusion, hypothesis, perform experiment, question, analyze data.
What is question, hypothesis, perform experiment, analyze data, conclusion
400
Ms. Miller writes the following statement before she begins her experiment, "If students eat more food in the morning, then they will do better on their quizzes" What part of the hypothesis is she missing? BONUS 100 points: Re-write her hypothesis to include what she is missing
She is missing "because"
400
Ms. Miller wants to test to see how different types of music affect plant growth. In this experiment the different types of music is the independent or dependent variable?
What is the independent variable
400
THIS IS HARD, READ CAREFULLY: Max is testing what temperature makes the best cheesecake. The recipe for cheesecake says that it should be baked at 350 degrees fahrenheit. Max makes three cheesecakes: 1) Cheesecake baked 50 degrees below 350 degrees (300) 2) Cheesecake baked at what the recipe says it should be baked at (350 degrees) 3) Cheesecake baked at 50 degrees above 350 degrees (400) Which group is the control group?
What is group 2) Cheesecake baked at what the recipe says it should be baked at (350 degrees)
400
Alomor and Judah wants to test to see what angle at shooting a basket, can you have the greatest accuracy at making the shot? 1) They have Mr. Victory shoot ten baskets at a 45 degree angle 2)They have Mr. LLort shoot ten baskets at a 55 degree angle 3)They have Mr. Faustin shoot ten baskets from a 65 degree angle 4) They have Ms. King shoot ten baskets from a 75 degree angle What is a possible source of error in their experiment?
They have different people shooting the basketball, who all have different skills at basketball which means their skill could affect the accuracy, but we only want to test how the angle affects accuracy.
400
How many independent variables can you have in an experiment?
1
500
What do you NOT do before you start an experiment? A) Make observations B) Write a hypothesis C) Analyze Data D) Ask a Question
What is C) Analyze Data
500
Rachelle thinks that if she adds more butter to her cookie recipe, then the cookies will taste better. In this experiment the taste of the cookies is the independent or dependent variable?
What is the dependent variable
500
Ms. Miller performs an experiment to test whether the amount of candy she give students affects how much work they do. Correctly label the following three groups as either control or experimental. Group 1) Ms. Miller gives all of 601 one piece of candy Group 2) Ms. Miller gives all of 602 two pieces of candy Group 3) Ms. Miller gives 603 no candy
What is Group 1) Experimental Group 2) Experimental Group 3) Control
500
What is the only thing that should be changed in an experiment?
Independent Variable
500
How many constants can you have in an experiment?
As many as you like, infinite