Show:
Variables
Steps of the Scientific Method
Write a Hypothesis
Mystery #1
Mystery #2
100
What is the one variable that is changed in an experiment?
Independent Variable
100
What is the first step in the Scientific Method? Why is it necessary?
The first step of the Scientific Method is to ask a question (or state your purpose). It's important to know why you are performing the experiment!
100
Write a hypothesis for the following question: How does increasing the slope of a ramp affect how far a Hot Wheels car travels?
If I increase the slope of a ramp, then the Hot Wheels car will travel farther because it picks up more speed.
100
Write a hypothesis for the question: Will toddlers grow taller if they drink more milk?
If a toddler drinks more milk, then he will grow taller because milk contains calcium which supports bone growth.
100
What is a series of steps designed to help you solve problems and answer questions?
Scientific Method
200
What is the variable that we can measure in the experiment?
Dependent Variable
200
What would be a good hypothesis for the cookie experiment?
student response
200
Write a hypothesis for the following question: Which type of paper (cardstock, construction paper, notebook paper) makes a paper airplane that will fly the farthest?
If I make paper airplanes using three different types of paper, then the airplane made out of notebook paper will go the farthest because it is the lightest weight.
200
Write a hypothesis for the following question: What would happen if I mixed Mentos with Diet Coke?
If I added Mentos to Diet Coke, then the combination would cause an explosion because the Mentos and the carbonation of the soda would react and cause it to fizz out of the bottle.
200
What are the two things that we include when writing a conclusion?
We write what the results of the experiment were (what we learned) and whether or not our hypothesis was correct.
300
A long jumper decided to test out which pair of shoes made him jump the farthest. He had three trial jumps from the same spot and wore Nikes, Adidas, and Reeboks for each trial. What is the independent variable? Dependent variable? Control?
Independent variable: brands of shoes Dependent variable: how far he jumped Control: the starting point
300
What are the 6 steps of the Scientific Method?
1. Purpose (ask a question) 2. Research 3. Hypothesis 4. Experiment 5. Analyze Results 6. Conclusion
300
The baker used the same recipe for each batch of cookies, but added baking powder to one, pudding mix to another, and apple sauce to the third one. Write a hypothesis for the following question: Which extra ingredient will make the chewiest chocolate chip cookie?
If I add baking powder to one batch of cookies, pudding mix to another, and apple sauce to the third batch, then the cookies with the pudding mix will be the chewiest because pudding mix is the thick and creamy.
300
What are we doing when we write a hypothesis? In other words, what is a hypothesis?
An educated guess or our prediction
300
Two different classes of students were tested to see who could complete the same math test the fastest. One class was given calculators and the other class was not. What is the independent variable? Dependent Variable? Control?
Independent Variable: Calculators vs. No Calculators Dependent Variable: The time it took the students to finish the math test Control: Students were given the same math test
400
Which extra ingredient will make the chewiest chocolate chip cookie? The baker used the same recipe for each batch of cookies, but added baking powder to one, pudding mix to another, and apple sauce to the third one. What is the independent variable? Dependent Variable? Control?
Independent Variable: the extra ingredients Dependent Variable: the chewiness of the cookie Control: the same recipe for each batch
400
What are some materials you would need for the Skittles Experiment?
two cups, two skittles, the two types of water, and a clock
400
Write a hypothesis for the following question: How does increasing the amount of sleep a student gets affect their attention span in class?
If a student increases the amount of sleep they get, then they will have a better attention span in class because they are well-rested and more focused.
400
Name the dependent variable in the question: How does the amount of food eaten before a race affect a runner's mile time?
Dependent Variable: the runner's mile time (how fast they run a mile)
400
Why is it important to have a controlled variable (constant) in an experiment? It makes the experiment ______________.
Fair
500
Three of the same breed of dog (all Golden Retrievers) were given a bath. Each dog was bathed in a different brand of shampoo. The purpose was to see which brand of shampoo made the dog's coat the shiniest. What is the independent variable? Dependent Variable? Control?
Independent Variable: Different brands of shampoo Dependent Variable: How shiny the dog's coat is Control: Same breed of dog
500
Which step of the Scientific Method makes it possible for us to make an EDUCATED guess when we write our hypothesis?
Research
500
Write a hypothesis for the following question: How does the amount of sunlight a plant receives affect how tall it grows?
If a plant receives more sunlight, then it will grow taller because plants need sunlight to make food.
500
What is one way to record and organize your results?
A table, a chart, a graph...
500
A good scientific question is ________________ and ___________________.
testable and measurable