how to write a conclusion and interpreting graphs and data

Warm-Ups: October 1-5, 2012

How to Write a Conclusion and

Interpreting Graphs and Data

Monday, October 1, 2012Answer the Question: How is pH useful in

determining water quality?

The level of pH has a major affect on the water quality of a river. If the water has a pH level below 6.5, the water is acidic just like lemon juice with a pH of 2. If the water has a pH level above 7.5, the water is considered basic, just like baking soda with a pH of 8 . At both the above pH levels the water quality is considered unhealthy and insects such as the caddis fly, stonefly and mayfly will not survive.

Wednesday, October 3, 2012Respond to the hypothesis: If multiple liquids are tested for pH, then the liquid can be determined to be an acid, base or neutral because the cabbage juice color can be compared to the indicator chart.

The hypothesis is accepted because different liquids were determined to be an acid, base, or neutral based upon what color the cabbage juice changed to and then comparing the new color to the indicator chart. For example, apple juice turned to a dark red color which means it as a pH of 3-4 and is acidic. Also baking soda turned blue which means a pH of 8 and makes baking soda a weak base.

Thursday, October 4, 2012The data was not reliable because: (address

the procedures of the lab)

• The color of the liquids was left to human judgment and one person may think that vinegar turned violet which would be a pH of 5-7. Another person may have thought the color was red and meaning vinegar had a pH or 3-4.

• Another reason the data is not reliable is the liquid was not measured accurately. Thus the amount of liquid compared to cabbage juice did not stay consistent throughout the lab.

Friday, October 5, 2012Other questions that still need to be

answered (must relate to further investigation of the same data):

Is there another way to check for pH levels that is more accurate?

In the future, this lab would include a wider variety of liquids, since only one base was tested.

Monday, October 8, 2012Interpreting Graphs: Let’s start with vocabulary.

Write down the verbs in the box below and make a key as follows:• Circle verbs that mean to go up• Underline the verbs that mean to go down• Put a star next to the verb that means to go up and

down• Use and arrow to indicate the word that means to

reach its highest level• Put a triangle next to the word that means to stay

the same for a period of time

peak soarrise fluctuatedecline dropclimb increasestabilize

Monday, October 8, 2012Interpreting Graphs: Let’s start with vocabulary.

Write down the verbs in the box below and make a key as follows:• Circle verbs that mean to go up• Underline the verbs that mean to go down• Put a star next to the verb that means to go up and

down• Use and arrow to indicate the word that means to

reach its highest level• Put a triangle next to the work that means to stay

the same for a period of time

peak soarrise fluctuatedecline dropclimb increasestabilize

Tuesday, October 9, 2012

Using the tadpole graph, write the sentences below, fill in the blank and underline the vocabulary word. Use the vocabulary words from Monday.

1. In the year 1990, tadpole populations began to _______________rapidly.

2. Tadpole populations reached a _________________ in 1992.

3. Between 1992 and 1993, populations of tadpoles______________.

Wednesday, October 10, 2012


4. Tadpole populations ________________after 1993

5. Between 1995 and 1999, populations______________________.

6. How many tadpoles were in the pond at its peak? (answer in a complete sentence)

Thursday, October 11, 2012


7. How many tadpoles were present in the pond in 1998? (answer in a complete sentence)

8. Between 1990 and 19993 populations______________________.

9. Between 1998 and 1999, tadpole populations___________________ somewhat.

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how to write a conclusion and interpreting graphs and data

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