Microscope Worksheet
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Name:______
Microscope worksheet
How long was the first microscope?______feet
In the 1590’s the ______brothers created the first microscope.
Two scientists that made improvements on the lenses of microscopes were
______& ______.
In 1665, Robert Hooke looked at a thin slice of ______and later coined the name cellulae or ______.
In the early 1700’s Leeuwenhoek looked at______water and called the microscopic organisms “animalcules”
In 1838, Matthius Schleiden stated all ______are made of cells.
Theodor Schwann stated all ______are made of cells.
Robert Brown observed a ______in orchid cells.
Iist the 3 parts to the cell theory:
1. ______are the basic unit of life 2. All organisms are composed of ______. 3. All cells come from ______cells.
Parts of the Microscope
1. The body tube holds the ______lenses and the ______lens at the proper distance.
2. The Nose Piece holds the objective lenses and can be turned to change the ______. 3. The ocular or eye lens magnifies the specimen image _____times.
4. The Objective Lenses increase magnification from ____x to ___x to ___x.
5. The 2 ______clips hold the slide/specimen in place on the stage.
6. The Diaphragm controls the ______of ______on the slide/specimen.
7. The light source projects light upwards through the diaphragm, the specimen and the lenses. Some have ______, and others have ______where you must move the mirror to reflect light.
8. The arm is used to ______the microscope when carried.
9. The ______supports the slide/specimen.
10. The ______adjustment knob moves the stage up and down (quickly) for focusing your image. Never use coarse adjustment under ______power.
11. The ______knob moves the stage SLIGHTLY to sharpen the image.
12. The ______supports the microscope.
Magnification: To determine your magnification…you just multiply the ______or ____ lens by the ______lens
If the ocular lens is 10x & the objective lens is 40x. The total magnification = ______x.
The convex lenses of a microscope works by ______light, making the object bigger.
The hand lens magnifies up to ______x and the stereo microscope up to ______x.
The stereo uses ______ocular/eye lenses to enhance the specimen, which gives a ______image.
Electron Microscope Electron microscope uses electrons & can magnify up to ______x.
Name the two types & function of Electron microscope:
1.
2. The Compound Light Microscope
Ocular or eye lens Course adjustment knob Body tube Fine adjustment knob Stage Diaphragm Arm Objective lens Stag clips Revolving nose piece Light source Base