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1. What do you observe in the photograph on the main page of the activity? Describe at least 10 observations. Remember to use descriptive language.
- pancakes.
-they are happy.
-they are in pj's
-he has coffee
-pretty kitchen
-it is sunny out side
-she has long hair
- he has gray hair
- she has brown hair
-the stove top is on
2. Draw a detailed sketch of one part of the photo.
i drew the pancake in the pan.
3. which of your senses did you use to make observations about the photo? Which of your senses were you not able to take advantage of while making observations about the photo. Why not?
i used my sight.
you couldent use smell taste or touch because it was a picture.
duhh.
4. How many states of matter do you think are in the photo? Describe at least two.
uhh...idk
5. Do you see physical or chemical changes occurring in this photo? Describe at least one. making sure to indicate which type of change is occurring and why?
Chemical. because the pancakes are mixed together and cooked.
6. Do you think the pancake batter, before it is cooked, is a mixture or a substance? what type of mixture or substance do you think it is? explain.
mixture.
7. Read the following paragraph carefully, and then show how the scientific method was used by answering the questions below. (14 points)
Emma’s dad makes great pancakes. One morning, Emma’s dad decided to try a new pancake recipe. The pancakes were a disaster. What could have happened? He had always made terrific pancakes. He didn’t want his family to think he had lost his pancake-making touch, so he decided to investigate why his new recipe was a flop. He checked the temperature on his stove. He checked to make sure the pan he had used was clean. He checked to make sure he had used the right ingredients. What could it be? As he re-read the recipe, he noticed that it did not call for eggs. He had used eggs in every other pancake recipe he had tried. Could this be what went wrong? But how many eggs should he add? He tried the recipe again, adding one egg. The results were not so great. He tried again, adding two eggs. Much better! Would the recipe be even better if he added three eggs? He tried it. No; the pancakes weren’t better. He tried the recipe several more times, adding two eggs each time. That was it! The recipe needed two eggs. Now, he cooks perfect pancakes every time.
a. Question/Observations – What was the problem? (2 point)
b. Form a Hypothesis – What were the possible solutions? List the solutions, then write a hypothesis for using the solution Emma’s dad decided to test. (2 points)
c. Experimentation – How was the hypothesis tested? Describe the details. (2 points)
d. Analyze the Data – What were the results? What do you think the results mean? (2 points)
e. Conclusion – Was the hypothesis found to be true or false? Write a brief summary that includes: a) the original question;
b) what you predicted;
c) the investigation plan;
d) whether the hypothesis was true;
e) possible errors, and
f) new questions that might have come up as a result of the experiment. (6 points)
8. Emma wants to convert her dad’s new pancake recipe to SI units to send to her cousin, Adrian, in France. Can you help her out? Use the following conversion table to fill in the correct SI measurements and units below. (7 points)
U.S. SI
1 teaspoon 5 ml
1 tablespoon 15 ml
1 cup 240 ml
Ingredient U.S. Measurements/Units SI Measurements/Units
Flour 2 cups
Milk 2 cups
Eggs 2
Melted butter 1/3 cup
Sugar 1 tablespoon
Baking powder 2 teaspoons
Salt 1/2 teaspoon
9. Adrian loves the pancakes! The problem is, the recipe serves only six, and he has 540 people in his family (including aunts, uncles, and cousins). Now, he needs help increasing the recipe to feed his entire family. However, Adrian is particular — he insists on using only three significant figures with scientific notation. (7 points)
Ingredient U.S. Units SI Units SI Units (measurements for 540)
Flour 2 cups
Milk 2 cups
Eggs 2
Melted butter 1/3 cup
Sugar 1 tablespoon
Baking powder 2 teaspoons
Salt 1/2 teaspoon
10. Adrian believes that he could be the quickest pancake flipper in France. He has been practicing every day to improve his time. He wants to enter France’s National Pancake Speed Cooking Competition, but first he must submit his trial times for a week – one time per day – to the pancake-competition committee. The committee will only accept times in graph form. Can you help Adrian?
Use Adrian’s information, provided in the table below, to plot his pancake flips on a graph. Be sure to include labels for all of the necessary information in the table, and to indicate the dependent variable and the independent variable. (10 points)
Day Pancakes Flipped Per Minute
Day 1 – Monday 3
Day 2 – Tuesday 4
Day 3 – Wednesday 5
Day 4 – Thursday 6
Day 5 – Friday 7
Day 6 – Saturday 8
Day 7 – Sunday 9