Scientific Method
Name the Variable
Scenarios
Scenarios Pt2
Graphs & Things
100
The First step of the Scientific Method
What is the Problem?
100
Name the independent variable.
What is the mount of sunlight?
100
A farmer wants to see if the type of hay that he feeds his cows makes a difference in their growth. He thinks that feeding them a special type will help them grow more over 1 year. He feeds cow A the regular hay, cow B the same amount of alfalfa hay and cow C the same amount of legume hay. He weighs the cows before the experiment and then weighs them again in 1 year.
Name the Problem.
Name the Hypothesis.
Does the type of hay fed to cows effect their growth?
Special types of hay would help the cows grow more over a period of a year.
100
Scientists and nutritionists have long suspected high fructose corn syrup, used to sweeten soft drinks, is one of the causes of childhood obesity. In a recent study, at the university of Cincinnati, researchers found that mice that drank water with added fructose ate less solid food, gained more weight and put on 90% more body fat than mice that drank only water. Scientist concluded that fructose may affect metabolism in a way that favors storage.
Name the independent variable.
Name the dependent variable.
The presence of fructose in their diet.
The weight gained by the mice.
100
Megan wanted to see if she could get a balloon to inflate by mixing chemicals together. She knew from previous experience that mixing vinegar (an acid) and baking soda (a base) together would fizz and put off gases. When she looked around the lab and gathered all her supplies she didn't find vinegar but did get another acid called Hydrochloric Acid (HCl). She thought that HCl would work the same as vinegar since it was an acid so she designed her experiment. She then put on her safety gloves and went to work. Megan measured out 10mL of baking soda and put it in the balloon. She then measured out 10mL of HCl and put it in a flask. She stretched the opening of the balloon over the flask and lifted the balloon so the baking soda would mix with the acid. She was excited to see that the when the baking soda and HCl mixed they began to fizz and the balloon inflated.
Name Megan's Conclusion.
You can mix HCl and baking soda and get a balloon to inflate
200
The Second Step of the Scientific Method
What is Research?
200
Name the independent Variable for this experiment.
What is the amount of fertilizer used?
200
A farmer wants to see if the type of hay that he feeds his cows makes a difference in their growth. He thinks that feeding them a special type will help them grow more over 1 year. He feeds cow A the regular hay, cow B the same amount of alfalfa hay and cow C the same amount of legume hay. He weighs the cows before the experiment and then weighs them again in 1 year.
Name the Independent Variable.
Name the Dependent Variable.
How much the cows weigh after a year?
How much the cows weigh after a year?
200
Scientists and nutritionists have long suspected high fructose corn syrup, used to sweeten soft drinks, is one of the causes of childhood obesity. In a recent study, at the university of Cincinnati, researchers found that mice that drank water with added fructose ate less solid food, gained more weight and put on 90% more body fat than mice that drank only water. Scientist concluded that fructose may affect metabolism in a way that favors storage.
Name the assumed control in the experiment.
Mice that drank only water
200
In the penny lab, we put drops of water on a penny to see how many water drops fit on the Lincoln head side of a penny. What was the Independent Variable in that experiment?
The size of the water drops
300
The Third Step of the scientific method
What is forming a hypothesis?
300
Name the Constant in this experiment.
What is the sizing of the planting pots?
300
Suzy wants to know if giving plants another liquid other than water will make them grow taller. She thinks that water will work best because that's what plants get in nature. She puts seeds in same sized pots with the same amount of soil, puts the seed exactly 1 inch under the soil and puts them next to the window all side by side. She waters plant A with 10mL of water every other day, plant B with 10mL of milk every other day and plant C with 10mL of orange juice every other day for 21 days. She then measures their growth each week.
Data Collected Water Milk Orange Juice Week 1 8mm 6mm 4mm Week 2 14mm 8mm 2mm Week 3 18mm 10mm Plant died
Name the Problem.
Name the Hypothesis.
What type of liquid helps plants grow the best?
The seed that receives the water will grow taller.
300
Megan wanted to see if she could get a balloon to inflate by mixing chemicals together. She knew from previous experience that mixing vinegar (an acid) and baking soda (a base) together would fizz and put off gases. When she looked around the lab and gathered all her supplies she didn't find vinegar but did get another acid called Hydrochloric Acid (HCl). She thought that HCl would work the same as vinegar since it was an acid so she designed her experiment. She then put on her safety gloves and went to work. Megan measured out 10mL of baking soda and put it in the balloon. She then measured out 10mL of HCl and put it in a flask. She stretched the opening of the balloon over the flask and lifted the balloon so the baking soda would mix with the acid. She was excited to see that the when the baking soda and HCl mixed they began to fizz and the balloon inflated.
Name the problem in the form of a question.
How do you get a balloon to inflate using chemicals?
300
In the penny lab, we put drops of water on a penny to see how many drops the Lincoln side head of a penny would hold. What was the Dependent Variable in that experiment?
The number of drops on the penny
400
The 4th Step of the Scientific Method.
What is a perform a controlled experiment?
400
Name the Dependent Variable. Name the trial.
What is the growth of the plants?
What is Trial 1?
400
Suzy wants to know if giving plants another liquid other than water will make them grow taller. She thinks that water will work best because that's what plants get in nature. She puts seeds in same sized pots with the same amount of soil, puts the seed exactly 1 inch under the soil and puts them next to the window all side by side. She waters plant A with 10mL of water every other day, plant B with 10mL of milk every other day and plant C with 10mL of orange juice every other day for 21 days. She then measures their growth each week.
Data Collected Water Milk Orange Juice Week 1 8mm 6mm 4mm Week 2 14mm 8mm 2mm Week 3 18mm 10mm Plant died
Name the Independent Variable.
Name the Dependent Variable.
The different types of liquid
The height of each plant
400
Megan wanted to see if she could get a balloon to inflate by mixing chemicals together. She knew from previous experience that mixing vinegar (an acid) and baking soda (a base) together would fizz and put off gases. When she looked around the lab and gathered all her supplies she didn't find vinegar but did get another acid called Hydrochloric Acid (HCl). She thought that HCl would work the same as vinegar since it was an acid so she designed her experiment. She then put on her safety gloves and went to work. Megan measured out 10mL of baking soda and put it in the balloon. She then measured out 10mL of HCl and put it in a flask. She stretched the opening of the balloon over the flask and lifted the balloon so the baking soda would mix with the acid. She was excited to see that the when the baking soda and HCl mixed they began to fizz and the balloon inflated.
Name a hypothesis that best supports the experiment.
If by placing a balloon on a flask that has baking soda in it, then the balloon will inflate.
400
Use the graph to determine which variable is the independent variable.
Number of Weeks
500
The 5th Step of the Scientific Method
What is collecting and analyzing data?
500
The 6th step of the Scientific Method
What is drawing conclusions?
500
Suzy wants to know if giving plants another liquid other than water will make them grow taller. She thinks that water will work best because that's what plants get in nature. She puts seeds in same sized pots with the same amount of soil, puts the seed exactly 1 inch under the soil and puts them next to the window all side by side. She waters plant A with 10mL of water every other day, plant B with 10mL of milk every other day and plant C with 10mL of orange juice every other day for 21 days. She then measures their growth each week.
Data Collected Water Milk Orange Juice Week 1 8mm 6mm 4mm Week 2 14mm 8mm 2mm Week 3 18mm 10mm Plant died
Name the Control group
What conclusion made?
The seed that receives water
The plant that received water grew the most
500
Megan wanted to see if she could get a balloon to inflate by mixing chemicals together. She knew from previous experience that mixing vinegar (an acid) and baking soda (a base) together would fizz and put off gases. When she looked around the lab and gathered all her supplies she didn't find vinegar but did get another acid called Hydrochloric Acid (HCl). She thought that HCl would work the same as vinegar since it was an acid so she designed her experiment. She then put on her safety gloves and went to work. Megan measured out 10mL of baking soda and put it in the balloon. She then measured out 10mL of HCl and put it in a flask. She stretched the opening of the balloon over the flask and lifted the balloon so the baking soda would mix with the acid. She was excited to see that the when the baking soda and HCl mixed they began to fizz and the balloon inflated.
Name the dependent Variable
Whether or not the balloon inflated.
500
Use the graph to determine which variable is the dependent variable.
The Amount of Money