EnS7 Lesson 1 Microscopes PDF

Science 7 AURORA NATIONAL SCIENCE HIGH SCHOOL Science 7 -Quarter 2 Module 1 Carla Melissa G. Baldonade  TWO Science 7 PICS ONE WORD Carla Melissa G. Baldonade  Scie...

Science 7 AURORA NATIONAL SCIENCE HIGH SCHOOL Science 7 -Quarter 2 Module 1 Carla Melissa G. Baldonade  TWO Science 7 PICS ONE WORD Carla Melissa G. Baldonade  Science 7 O _ _ _ N _ S _ Clue: This is you!  Science 7 O _ _ A _ Clue: This is found inside your body.  Science 7 _ _ S S _ _ Clue: It makes up your heart, lungs, kidney and other internal parts of your body..  Science 7 _ E _ _ Clue: Found inside your body and you cannot see it with your naked eye!  Were you Science 7 able to get all the answers? Carla Melissa G. Baldonade  Science 7 ORGAN TISSUE CELL ORGANISM Have you ever wondered how are able to discover and study things that cannot be seen by our naked eye? Science 7 Science 7  Science 7 M i C R O S O P E MODULE 1 Science 7 Parts and Functions of the Compound Microscope Carla Melissa G. Baldonade Most Essential Learning Science 7 Competency Identify parts of the microscope and their functions Carla Melissa G. Baldonade After going through this module, you are Science 7 expected to: state the history of the miscrocope; state the function of a microscope; identify the various type of microscope; label the parts of the microscope; and describe the functions of each part of the microscope.  Quarter 2 - Module 1 Pre - Assessment Match the given parts of the microscope to its corresponding function. Write only the letter of your answer. Carla Melissa G. Baldonade Match Me Up! Science 7 Science 7 History of the Microscope The Miscroscope 13th Century 1590s Dutch spectacle makers Grinding glass to use for Zaccharias Janssen and Hans spectacles and magnifying Lipperhey are noted as the first glasses was commonplace men to develop the concept of during the 13th century. the compound microscope. 1609 1665 An English physicist, Robert 1609 Galileo Galilei Hooke looked at a sliver of cork perfected the first device through a microscope lens and known as a microscope. notice some “pores” or “cells” in it. 1674 1925 Anton van Leeuwenhoek built a Richard Zsigmondy developed simple microscope in with only the ultra-microscope that could one lens to examine blood, yeast, study objects below the insects and many other tiny wavelength of light and won a objects. Nobel Prize in Chemistry in 1925. 1932 Present Day Microscopes Little was done to improve the The phase- contrast microscope microscope until the middle of the was invented by Frits Zernike. It 19th century when great strides allows the study of colorless and were made and quality instruments transparent biological materials. like today’s microscope emerged. Timeline of the Development of Microscope Science 7 1674 13th Century 1950s 1609 1665 Robert Hooke Present 1932 1925 spectacles and magnifying glass Digital and trinocular microscopes Richard Zsigmondy Galileo Frits Zernike Anton van Leeuwenhoek Zaccharias Janssen and Hans Lipperhey Timeline of the Development of Microscope Science 7 Zaccharias Spectacles Janssen Anton and and Van magnifying Hans Leeuwenhoek glass Lipperhey Galileo Robert Hooke 1674 13th Century 1950s 1609 1665 Present 1932 1925 Digital and Frtiz Richard Trinocular Zernike Zsigmond Microscopes  Science 7 A microscope comes from the Ancient Greek micros meaning “small” and skopein, which means “to look”, is a tool which can help you see tiny objects and living organism. It makes them look bigger. The science of investigating small objects and structures using such an instrument is called microscopy. What is a microscope? What makes a microscope determine how clearly a small object can be viewed? Science 7  Science 7 MAGNIFICATION RESOLUTION It describes how much larger an the capacity of a microscope to object appears when viewed distinguish finer details of an image.  Science 7 There are different types of microscopes which differ in their magnification and their resolving power. COMPOUND STEREO MICROSCOPE uses two or more double convex lenses to also known as dissecting microscope; it magnifies magnify the object. It can magnify up to 1200x the object 100x and gives three- dimensional image OPTICAL MICROSCOPE uses visible light to form an image. It uses glass lenses to magnify and resolve images. The image that was formed can be viewed from an eyepiece. It has two types. TRANSMISSION ELECTRON MICROSCOPE SCANNING ELECTRON MICROSCOPE (TEM) (SEM) electron beam passes through an ultra- thin electron beam bounces off from the surface sample. of the sample. ELECTRON MICROSCOPE uses high energy electron beams to form an image. The image that was formed can only be viewed from a photographic plate or from a computer screen; the image magnified can reach up to 2 000 000x.  Science 7 A compound microscope is a microscope that uses multiple lenses to enlarge the image of a sample. What is a compound microscope? Parts and Function of a Microscope Science 7 Can you identify the parts of a microscope? Science 7  Mechanical Parts The The part of the compound microscope that is used to support and adjust other microscope is parts. composed of Illuminating Parts three major The part of the microscope which supplies light and regulate light towards parts based on the focus specimen. their functions Magnifying Parts Science 7 The part of the compound microscope that the specimen in focus appears larger. Mechanical Parts 1. Base 2. body tube 3. coarse adjustment knob 4. fine adjustment 5. inclination Joint 6. stage 7. stage clip 8. Arm 9. Revolving Nosepiece Science 7 Science 7 Illuminating Parts 1. diaphragm 2. stage condenser 3. mirror Science 7 Science 7 Magnifying Parts 1. eyepiece/ocular 2. objective lenses Scanner Low power objective High power objective Oil immersion Science 7 Science 7 Where to find the Science 7 magnification of a lens? The magnification is written on the side of the lens. The value could be 4x, 10x, 40x or 100x. To calculate the total magnification of the compound light microscope, multiply the magnification power of the ocular lens by the power of the objective lens. For example, a 10x ocular lens and a 40x objective would have a 400x total magnification. Science 7 Can you identify the parts of a microscope? Science 7  Can you identify the parts of a microscope? Science 7 Ocular lens Body Tube Coarse Adjustment Fine Adjustment Arm Revolving eyepiece HPO Oil Immersion Stage Mirror/Light source LPO Inclination Joint Stage clips Base  Think About This Where are microscopes often used? How did the invention of microscope Science 7 affect our lives?  Think About This In this time of pandemic, do you think microscopes play an important role? How? Science 7 Science 7 Any questions? Carla Melissa G. Baldonade  Quarter 2 - Module 1 Post - Assessment Match the given parts of the microscope to its corresponding function. Write only the letter of your answer. Carla Melissa G. Baldonade Match Me Up! Science 7 Match Me Up! (Answers) Science 7  Answer the Quiz given via google forms Science 7