Question

key:
a. state the problem
b. do research
c. form a hypothesis
d. design an experiment
e. perform experiment
f. analyze data
g. determine if the hypothesis is rejected or accepted
h. modify or repeat the experiment
part 1: using your knowledge of the scientific method, match the steps to the parts of the scenario below.

1. katie creates a bar graph illustrating the frequency of her brother’s consumption of each snack category: all, part, or none.
2. katie is a nice sister who always fixes a snack for her little brother after school. one day, he does not want to eat the snack that she prepared. she wonders why.
3. katie plans a menu for the next two weeks, dividing each snack into two categories: “sweet” or “salty”. she prepares a data table, where she will mark if he eats all, part, or none of his snack.
4. looking over her data, katie sees that there is no clear trend as to whether her brother prefers sweet or salty snacks. she decides that she was wrong.
5. after determining that her original hypothesis was wrong, katie decides that she will next measure how her brother eats after days he has gym class. perhaps he is hungrier after gym class. she plans a new menu and makes a new data table to fill out.
6. katie looks in the kitchen cabinets at home to see what food is available. she makes a list of all the snacks that she has prepared for her brother over the last month.
7. she hypothesizes that her brother prefers salty snacks.
8. katie follows the menu for two weeks and makes observations after her brother finishes eating. she marks on her data table whether he eats all, part, or none of his snack

Explanation:

To solve this, we analyze each scenario against the scientific method steps:

1. Katie creates a bar graph illustrating...

• Step: Analyze Data (F) – creating a graph to visualize data is part of analyzing.

2. Katie is a nice sister... He doesn’t want to eat... She wonders why.

• Step: State the problem (A) – identifying the problem (why he doesn’t want the snack).

3. Katie plans a menu... dividing each snack... prepares a data table.

• Step: Design an experiment (D) – planning the menu and data collection is experimental design.

4. Looking over her data... no clear trend... she was wrong.

• Step: Determine if hypothesis rejected/accepted (G) – analyzing data to conclude hypothesis validity.

5. After determining... wrong, Katie decides... new menu.

• Step: Modify or repeat experiment (H) – changing the experiment after rejecting hypothesis.

6. Katie looks in kitchen cabinets... list of snacks.

• Step: Do research (B) – gathering information (past snacks) is research.

7. She hypothesizes that her brother prefers salty snacks.

• Step: Form a hypothesis (C) – stating a testable prediction.

8. Katie follows the menu... makes observations... marks data table.

• Step: Perform experiment (E) – carrying out the experiment (following menu, observing).

Answer:

s:

1. F
2. A
3. D
4. G
5. H
6. B
7. C
8. E