Lab 1: Microscopy and the Metric System

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Lab 1: Microscopy and the Metric System
The purpose of this lab is to become familiar with the lighted microscope, how to prepare a wet mount, and understand taking measurements in the metric system and its conversions.

Materials & Methods Materials:
Part A: * Computer for videos

Part B: * Tape measure with centimeters * Scale that measures grams * Thermometer that shows Celsius * Campbell Biology Book * 1 piece Orange Starburst

Methods: Part A: Combined Lighted Microscope 1. Watch video on microscope 2. Answer the provided questions on the microscope
Wet Mount: 1. Watch video on wet mount 2. Explain the process of creating a wet mount Part B: Width of Book: 1. Lay book
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| Width in cm | Width converted to mm | Campbell Text | 24.5 cm | 245 mm | 2) Conversions: Convert 100 grams to mg and then μg | Equivalent in mg | Equivalent in μg | 100 g | 100,000 mg | 100,000,000 μg |

3) Weight measurements: Using your scale, record the mass of an object in grams and include the name of the object you have measured. Once you have recorded your measurement in grams, please convert that measurement to mg and then μg. | Weight in g | Weight in mg | Weight in μg | 1 orange Starburst | 5.4 g | 5,400 mg | 5,400,000 μg | 4) Volume measurements: Define meniscus and describe how you would read the volume of a liquid in a graduated cylinder. a) Meniscus is the convex or concave curve in the upper surface of a liquid caused by surface tension. b) You would read the volume of a liquid in a graduated cylinder by placing top part of the liquid at eye level then reading the number closest to the bottom curvature of the meniscus. 5) Temperature measurements: Record the temperature of your skin and of the room in °Celsius. | Temperature in Celsius | Room Temperature | 25.4 c | Skin Temperature | 32.5 c

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