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Microscope Basics

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**Challenge #1 Parts of the Microscope**

Microscope Basics Challenge #1 Parts of the Microscope T. Trimpe 2008

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**Label the parts of the microscope**

Eye Piece/Ocular lens Diaphragm Objectives Nosepiece Fine Adjustment Knob Coarse Adjustment Knob D A B E C F

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**Coarse Adjustment Knob**

The answers are … Eye Piece Ocular Lens A B C D E F Nosepiece Objectives Coarse Adjustment Knob Diaphragm Fine Adjustment Knob

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**Challenge #2 Parts of the Microscope**

Microscope Basics Challenge #2 Parts of the Microscope T. Trimpe 2008

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**Identify the parts of a microscope.**

Arm Body Tube Coarse Adjustment Diaphragm Fine Adjustment Objective Lenses Eye Piece Stage A E B F G C H

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**The answers are ... D A E B F G C H A. Body Tube B. Objective Lenses**

C. Diaphragm D. Eye Piece E. Arm F. Stage G. Coarse Adjustment H. Fine Adjustment

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**Challenge #3 What do you know about microscopes?**

Microscope Basics Challenge #3 What do you know about microscopes? T. Trimpe 2008

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**Answer these questions based on your knowledge of microscopes.**

1. If you have three objectives – 10X, 30X, and 40X, which one has the lowest power of magnification? 2. Which of these images would be taken with a high power objective? 3. How does your view of a specimen change as you increase your power of magnification?

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The answers are … 1. If you have three objectives – 10X, 30X, and 40X, which one has the lowest power of magnification? 2. Which of these images would be taken with a high power objective? 3. How does your view of a specimen change as you increase your power of magnification? 10X HIGH POWER You are able to see the specimen in more detail, but you cannot see as much of it.

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**Challenge #4 What do you know about microscopes?**

Microscope Basics Challenge #4 What do you know about microscopes? T. Trimpe 2008

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**Answer these questions based on your knowledge of microscopes.**

4. Where should you hold on to the microscope when you carry it? 5. What is the scientific term for the eyepiece? 6. If the ocular lens has a power of 4X and the objective you are using has a power of 10X, what is your power of magnification? 7. What is the function of the diaphragm?

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**It regulates the amount of light that passes through the specimen.**

The answers are … 4. Where should you hold on to the microscope when you carry it? 5. What is the scientific term for the eyepiece? 6. If the ocular lens has a power of 4X and the objective you are using has a power of 10X, what is your power of magnification? 7. What is the function of the diaphragm? Arm & Base Ocular Lens 4X x 10X = 40X It regulates the amount of light that passes through the specimen.

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**Challenge #5 What do you know about microscopes?**

Microscope Basics Challenge #5 What do you know about microscopes? T. Trimpe 2008

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**Answer each question about microscopes.**

8. What part regulates the amount of light on a specimen? 9. If the eyepiece has a power of 12X and the objective has a power of 10X, what is the power of magnification? 10. What part of the microscope holds the objective lenses? 11. What part allows you to make small changes in your view of a specimen?

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The answers are … 8. What part regulates the amount of light on a specimen? 9. If the eyepiece has a power of 12X and the objective has a power of 10X, what is the power of magnification? 10. What part of the microscope holds the objective lenses? 11. What part allows you to make small changes in your view of a specimen? Diaphragm 12X x 10X = 120X Nosepiece Fine adjustment knob

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**Challenge #6 Powers of Magnification**

Microscope Basics Challenge #6 Powers of Magnification T. Trimpe 2008

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**Power of Magnification**

Fill in the missing information in the chart based on your knowledge of powers of magnification. Ocular Lens Objective Lens Power of Magnification 5 20 10 400 120 A B C

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**Power of Magnification**

The answers are … Ocular Lens Objective Lens Power of Magnification 5 20 10 400 120 X = 100 A B 40 C 12

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**Do you know the critters you see in pond water?**

Name That Critter Do you know the critters you see in pond water? T. Trimpe 2008

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**5 1 2 6 4 7 3 Identify each pond water critter.**

Place the correct number next to each name 5 1 Mosquito Larva_____ Dragonfly Nymph____ Damselfly Nymph____ Mayfly Nymph____ Nematode_____ Water Flea_____ Rotifer_____ 2 6 4 7 3

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**5 1 2 6 4 7 3 The answers are ... Mosquito Larva Rotifer**

Dragonfly Nymph Damselfly Nymph 6 4 Nematode 7 3 Water Flea Mayfly Nymph

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