Biology 4A Laboratory Your name:______________________ Scopes and Cells Worksheet Lab partners for this lab: A. Using the Microscope Determining the Magnifying Power: Total Magnification = Ocular magnification X Objective magnification Ocular Lens X Objective Lens = Total Magnification 1a. Scanning Power: X = 1b. Low Power: X = 1c. High Power (Dry): X = 1d. Oil Immersion: X = Image Orientation and Focusing: Describe the orientation of the letter when viewed under the microscope. “e” What direction in the field of view did the letter move when you moved the slide slightly to “e” the left or right using the slide movement knobs? Up or down? Describe the differences when viewing the letter under the three different magnifications. “e” What happened to the light intensity when you switched from low to high power? What can you do to adjust for this change? What happened to the working distance (distance between the slide and the objective lens) when you increased magnification from 40X 100X 430X? Diameter of the of View: Scanning power diameter: Low power diameter:
Biology 4A Laboratory Your name:______________________ Scopes and Cells Worksheet Lab partners for this lab: A. Using the Microscope Determining the Magnifying Power: Total Magnification = Ocular magnification X Objective magnification Ocular Lens X Objective Lens = Total Magnification 1a. Scanning Power: X = 1b. Low Power: X = 1c. High Power (Dry): X = 1d. Oil Immersion: X = Image Orientation and Focusing: Describe the orientation of the letter “e” when viewed under the microscope. What direction in the field of view did the letter “e” move when you moved the slide slightly to the left or right using the slide movement knobs? Up or down? Describe the differences when viewing the letter “e” under the three different magnifications. What happened to the light intensity when you switched from low to high power? What can you do to adjust for this change? What happened to the working distance (distance between the slide and the objective lens) when you increased magnification from 40X 100X 430X? Diameter of the of View: Scanning power diameter: Low power diameter:
bio4a.lab.scopescellsworksheet0916.docx