## Part I: Making measurements using the metric system

**CONVERSIONS. **Do the following conversions:

253 liters = ___________ milliliters | 60 daL = __________ L |

0.05 grams = __________ kilograms | 15 mg = __________ g |

53 milliliters = _________ microliters | 43 kg = ___________ g |

253 milliliters = ________ cubic centimeters | 4 hm = ___________ m |

175 centimeters= _______meters | 5 g = _____________ mg |

- Convert the room temperature from °F to °C 70°F = ______________ °C

- Convert the body temperature from °C to °F 37.5°C = ____________ °F

You can check your answers with a conversion calculator. Just remember you will not be allowed to use one on the exam!

**MEASURMENTS**

**Measuring Volumes**

- To practice reading volumes, use this Interactive Activity: Graduated Cylinder Challenge

** Tip**: For each measurement, take the time to count the number of minor graduations between the major graduations and make sure that you know the value of a graduation (ie: 1ml, 0.5 ml, 0.2ml, etc). Take a screenshot of your completion certificate and paste it here.

**Measuring length**

Use a ruler or a meter stick to answer the following question. Pay attention to the units!

If you don’t have a ruler, use this online ruler. For your height, don’t miss an opportunity to do a conversion! First, convert your height in inches. Then convert in cm by multiplying by 2.54 (There are 2.54 centimeters in 1 inch). Finally, convert in meters.

- What is the width of a notebook sheet? ______________________________ cm
- What is the length of your thumbnail? _______________________________ cm
- What is the length of a fork? _______________________________________ cm
- What is the height of this letter:
**E**? _________________________________ mm - What is your height? _____________________________________________ m

**Measuring weigh**

- What are the five basic rules when using a balance?

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- Explain how you would weight out a non-standing object.

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**Measuring temperature**

- To practice reading volumes, use this Interactive activity: Read the thermometer challenge.

Take a screenshot of your completion certificate and paste it here.

## PART II: Graphing

Remember these basic rules when graphing:

A graph consists of two lines: one vertical and one horizontal. These lines are drawn at right angles to each other and intersect at a point called the origin. The horizontal line is called the **x-axis**, or independent variable. The vertical line is called the **y-axis, **or dependent variable.

The **independent variable** is the value that the experimenter changes in order to perform an experiment. The **dependent variable** depends on the outcome of the independent variable. For example, if you were collecting data on an experiment that involved plants growth rate in 4 hours and 8 hours sunlight, the time of sunlight is the independent variable, and the plants growth rate is the dependent variable.

When constructing a graph, a test variable is placed on the x-axis. This is the variable that we have some degree of control over in an experiment such as time, volume, temperature, etc. The y-axis will contain the resulting values of an experiment, such as height, weight, quantity of product, etc. After numbering each axis, they are labeled with a description of the variable being tested and the unit and the graph itself is given an appropriately descriptive label. Do not forget your labeling!!

Construct your own graph using the data set below. Use the graph paper at the end of this report. Be sure your graph follows **all** the rules.

Hours Spent Studying | Exam Grade |

0.5 | 51 |

1 | 67 |

1.5 | 72 |

2.5 | 85 |

3 | 87 |

4 | 88 |

Once your graph is complete, answer the following questions based on it:

- Which variable is dependent? Why? (Which variable did you control> did you select the time that student spent studying or the exam grade?)

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- Do you believe the line of best fit represents this data accurately? Why or why not?

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- Is the relationship direct or inverse? Why?

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- If a student studied for 2 hours, about what would their exam grade be?

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