EXPLAIN WHY IT IS IMPORTANT TO USE LAB SAFETY?LAB SAFETY? GIVE ME 2 EXAMPLES Warm-Up.

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Presentation transcript:

EXPLAIN WHY IT IS IMPORTANT TO USE LAB SAFETY?LAB SAFETY? GIVE ME 2 EXAMPLES Warm-Up

Make Your Own Symbol Using your “text book” and a partner Create your own “Safety Symbol Pages XXVII-XXXI

TURN TO PAGE 11 IN YOUR IAN AND TAKE THE FOLLOWING NOTES Microscope Notes

Parts of the Microscope 1. Eyepiece (ocular lens) Function: Magnifies (makes larger) the sample 10x 2. Stage Function: Holds the slide in place 3. Diaphragm Function: Varies (changes) the amount of light coming from the lamp 4. Coarse Adjustment Function: The knob that focuses when using the low- power objective

Parts of the Microscope 5. Fine Adjustment Function: The knob that focuses when using the medium and high-power objectives 6. Low-power (scanning) objective lens Function: Magnifies the sample 4x 7. Medium-power objective lens Function: Magnifies the sample 10x 8. High-power objectives lens Function: Magnifies the sample 40x

Calculating TOTAL MAGNIFICATION Eyepiece magnification x objective magnification = total magnification Ex. 10x x 4x = 40x

Calculate the total magnification of the following: 1. eyepiece lens (5x) x low power objective (4x) = ___ 2. eyepiece lens (10x) x high power objective (40x) = ___ 3. eyepiece lens (7x) x medium power objective (10x) = ___ 4. eyepiece lens (10x) x objective (45x) = ___ 5. eyepiece lens (10x) x objective (50x) = ___

Calculate the objective power being used for viewing 1. eyepiece lens = 10x total magnification = 200x objective power = ____ 2. eyepiece lens = 5x total magnification = 200x objective power = ____ 3. eyepiece lens = 7x total magnification = 280x objective power = ____ 4. eyepiece lens = 5x total magnification = 100x objective power = ____

Label the Parts of the Microscope Complete the following handout

Microscope Lab (Practice) Using page 12 in your IAN Select 4 slides and draw each image at Label Each Image Properly Low power Medium Power High Power

CLOSING How does Lab Safety improve the “scientific method?” 3 complete sentences