scientific+method

== = = =** Vocabulary ** =

manipulated variable -The variable that changes in the experiment. ex, differnt kinds of soil in each garden. constant

Title

Purpose

Hypothesis

Results

Conclusion

data

table

line graph

bar graph

pie chart

quantitative

qualitative

=** Questions ** =

**Question #1** ** In the beginning of the spring, it seems everyone is caring for their front lawns by sprinkling fertilizer to help the grass grow better? Does fertilizer really help the lawn grow better? **

** a) Ask a question a scientist might ask given this information. **


 * Will this help the grass grow because the grass needs water but also fertilizer? **

** b) Write a possible hypothesis for this experiment. **


 * I think fertilizer does not help the grass grow because grass is a plant and other plants do not need fertilizer. Also grass grows in the wild where there is no fertilizer. **

** c) Design an experiment to help answer the original question. ** ** Describe or draw four possible groups in your experiment – **

** d) What is the manipulated variable? **

The amount of fertilizer added

** What variables are being kept constant? **

The species of flower, the soil type, the amount of rain and sun it gets, and the temperature.

** What is the control group in your experiment? **

The group with no fertilizer

** What will you be measuring to include in your data table and graph? ** ** How will you measure the differences between the 4 groups? **

** e) Write a conclusion for the results below: **

Kidney Bean Plant Growth (cm)
 * || no fertilizer || 3 cups of fertilizer ||
 * Plant 1 || 12.5 || 13.6 ||
 * Plant 2 || 10 || 12.5 ||
 * Plant 3 || 13.6 || 14.3 ||
 * Plant 4 || 11.2 || 15.7 ||
 * Average || 11.825 || 14.025 ||

Make a graph for the data above:

Question #2 How did each lab this year help us better understand science concepts:

A. The Paper Airplane Lab


 * Take hypothesis **
 * Choose a way to build plane **
 * Take data **
 * Write conclusion **

B. The Xpult Lab

C. The Mixture Lab

D. The Baking Soda Lab (Ultimate Fizz)

E. Making Chalk Lab

F. Change of State Lab (snow)

Showed/taught about properties of H2O, physical changes states of matter, etc.

G. Making Cheese

H. Middle School Gardens (Tulip Bulbs)

I. Chemistry Independent Project (temperature, salt and boiling, temp and solubility, mixing)

J. Osmosis Egg Lab

Question #3

**Using the Scientific Method**

Inspired by the results of our Learning Garden data, we conducted different experiments using kidney beans in the lab. Answer the questions below using the data from the graph below:

Growth of Tulip Plants (cm) at **Haverford** **School** (Suter) || Control (potting Soil) ||
 * || Middle School Garden || Lower School Garden || West Garden
 * || 9 || 8 || 16.5 || 23.5 ||

**a) What was the purpose of this experiment (original question)?**

**b) Write a good hypothesis for this investigation? ( if. . then. . because)?**

**c) What is the manipulated variable in this experiment?**

**d) Name THREE variables that are kept constant in this experiment?**

_ _ __

**e) Where would you get the soil for the control group? Explain why.**

f) Make a Graph for the Data Above.

Question # 4

Give some examples of quantitative data collected in class or observed in everyday life ( \10 examples)

Give some examples of qualitative data collected in class or observedin everyday life (10 examples)