Part B – Scientific Method READ THIS STORY AND ANSWER THE QUESTIONS:
Joe baked a cake for his mother's birthday. When he removed the cake from the oven, Joe noticed that the cake had not risen. Joe guessed that the baking powder he had used was too old. He designed the following experiment to test his idea.
Joe prepared two cakes – one using the same ingredients as his first cake and one using fresh baking powder. After preheating the oven to 350°F, he placed both cakes in the oven for 30 minutes. After 30 minutes, he removed both cakes and noticed that neither one had risen. He decided that the baking powder wasn’t the cause of his problem.
What is Joe's hypothesis?

What is Joe's conclusion?

What did Joe’s observe?

What was the independent variable in Joe’s experiment?

What was the dependent variable in Joe’s experiment?

What was the control in Joe’s experiment?

What were the constants in Joe’s experiment (assuming he did it correctly)?

8. Based on his conclusion, what should Joe do next?

1) Joe's hypothesis was that the baking powder he used was too old and that was why the cake did not rise

2) Joe concluded that the baking powder was not the cause of the cake not rising

3) Joe observed that the cake he made for his mother's birthday did not rise

4) The independent variable was the baking powder

5) The dependent variable was the rising cake

6) Joe's control in the experiment was the extra cake made using the same ingredient as the first

7) The constants were the heat and time to bake both cakes

8) He should recheck all the variables and constants (recipes and procedures) are correct as can be found in baking books

Explanation:

Please find the answers in the explanation

Explanation:

From the given description, when Joe noticed that the cake had not risen,  he guessed that the baking powder he had used was too old.

Hypothesis is one of the scientific methods which means guessing.

What is Joe's hypothesis?

Joe's hypothesis is that the baking power used was not effective to make the cake rise believing that it was too old.

After Joe prepared two cakes, one using the same ingredients as his first cake and one using fresh baking powder. After preheating the oven to 350°F, he placed both cakes in the oven for 30 minutes. After 30 minutes, he removed both cakes and noticed that neither one had risen. He decided that the baking powder wasn’t the cause of his problem.

What is Joe's conclusion?

The conclusion is that the inability for the cake to rise wasn't as a result of ineffectiveness of the baking powder used.

What did Joe’s observe?

Joe observed that the cake had not risen.

What was the independent variable in Joe’s experiment?

The independent variable determines the dependent variable.

The independent variable is therefore, the different types of baking powder used.

What was the dependent variable in Joe’s experiment?

The dependent variable is the volume of the cakes.

What was the control in Joe’s experiment?

Joe was able to control the time and the temperature.

What were the constants in Joe’s experiment (assuming he did it correctly)?

The constant were the quantities of the cake ingredient, time used, and the temperature

8. Based on his conclusion, what should Joe do next?

Joe can try another ingredient like yeast or reconsider the ratio of the baking powder to the flour.

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2