Parts of Microscopes EQ: How does a microscope work?

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Presentation transcript:

Parts of Microscopes EQ: How does a microscope work? In this activity 6th grade science student learn the “Basic Parts of the Microscope followed by another linked lesson on “How to Use the Microscope”. OBJECTIVE: The student will learn the basic parts of the microscope. After completion of this lesson, students will link the another lesson on “Care of Use of the Microscope.”

Microscope One of the most important tools used to study living things. “Micro” means very small “Scope” means to look at Diagram of a typical student light microscope, showing the parts and the light path

Basic Microscope Parts 1. Base Light source Diaphragm Stage Stage clips Low power High power Nosepiece Arm Fine Focus Body Tube Course Focus Eyepiece

Introducing the Arm and Base Supports the body tube. Used to carry the microscope. Base Bottom part of the microscope often shaped like a horseshoe.

Stage and Stage Clips Stage Place where the object you are looking at is placed (Specimen). Stage Clips Holds down the slide on the stage.

Eyepiece (Ocular Lens) and Body Tube The lens you look through that magnifies the specimen. Body Tube The hollow tube through which light passes. It holds the lenses apart.

Course and Fine Focus Course Focus Raises or lowers the Body Tube to focus Fine Focus Raises and lowers the Body Tube and used to bring objects into focus.

Nosepiece The NOSEPIECE is the round part that holds the OBJECTIVE LENSES apart.

Low Power/High Power Objective Lenses Low Power Objective Magnifies the specimen at a lower power High Power Objective Higher power

Diaphragm and Light Source Changes the amount of light reaching the objective lenses. Located under the Stage. Light Source Located beneath the Stage and Diaphragm. Sends light towards the hole in the stage.

Using the Microscope in 10 Steps Follow these instructions when using the microscope. Click on each underlined word. To carry the microscope, grasp the ARM with one hand. Hold the BASE with your other hand.

10 Steps to Using the Microscope 2. Adjust the DIAPHRAGM while looking through the EYEPIECE. 3. Adjust the LIGHT SOURCE (mirror) until you see the circle of light.

10 Steps to Using the Microscope 4. Place the slide on the STAGE. 5. Center the SPECIMEN over the small opening on the STAGE. 6. Secure the slide with the STAGE CLIPS.

10 Steps to Using the Microscope 7. While looking at the STAGE from the side, turn the COURSE FOCUS KNOB to lower the BODY TUBE until the LOW POWER OBJECTIVE almost touches the slide.

10 Steps to Using the Microscope 8. While looking through the EYEPIECE, carefully move the COURSE FOCUS KNOB until the specimen comes into view. 9. To switch to the HIGH POWER OBJECTIVE LENS, look at the microscope from the side.

10 Steps to Using the Microscope 10. Move the NOSEPIECE until the HIGH POWER OBJECTIVE LENS “clicks” into place. If the lens hits the slide, the slide and/or lens might break. Turn the FINE FOCUS KNOB until the specimen comes into focus.

Microscope Examples

Interesting Things to See Using Microscopes Onion Skin Cheek Cell Red Blood Cells Skin Cell

Basic Microscope Parts Arm Base Light source Diaphragm Fine Focus Stage clips Low power High power Nosepiece Body Tube Course Focus Eyepiece Stage