Download Microscope worksheet

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
Fine adjustment knob
Arm
Revolving nose piece
Course adjustment knob
Stage
Objective lens
Light source
Body tube
Diaphragm
Stag clips
Base