1. Introduction to the Cell Microscope
The  Username is  DiscSci8 and the Password is Student8.

2. Today we will: Define cell
Learn what makes a living thing different from a non-living thing
Learn how to handle a microscope
Learn the parts of the microscope

3. All living things are made of cells (cell theory).
Define cell as:
the basic, functional unit of life

7. View Model of a Cell

8. Observing Plant and Animal Cells
Onion cells
Onion cell short video

9. Characteristics of Living Things ( 4 according to your textbook)
All living things...
Grow
Move
Respond to stimuli
Reproduce

10. Growth A result of the cells in your body increasing in number
New cells will grow to replace old cells that die.

11. Movement
A change in position, shape or location (locomotion)

12. Animals might have wings, legs or fins to move from one location to another.

15. Plants might have stems that change position with the sun.

16. The sensitivity plant:

17. Stimulus: anything that causes an organism to react.
Respond to Stimuli
Stimulus: anything that causes an organism to react.
Maybe external or internal 17

18. Identify the stimulus & response

19. Reproduction
Producing more of the same kind (offspring)

20. We know that all living things are made up of cells.
How big are cells?
How do we see those cells?

21. Under the microscope….

22. The microscope Who invented the first microscope? Links: Text history
Timeline
Short history
A few good links such as founding fathers
Nice history with pictures

23. The Compound Light Microscope

25. Coarse adjustment knob Fine adjustment knob Objective lenses
The Compound Light Microscope
PART
FUNCTION
Eyepiece
Body tube (barrel)
Coarse adjustment knob
Fine adjustment knob
Objective lenses
Revolving nosepiece
Stage
Iris diaphragm
Light source
Base
Arm

26. PART
FUNCTION
Eyepiece
For viewing. Magnifies 10x.
Body tube (barrel)
Holds the eye piece.
Coarse adjustment knob
Used to focus at low or medium power.
Fine adjustment knob
Used to focus at high power.
Objective lenses
3. Used to magnify.
Revolving nosepiece
Holds the objective lenses.
Stage
Where you put the slide.
Iris diaphragm
Controls the amount of light
Light source
Supplies light.
Base
Supports the microscope.
Arm
Supports eyepiece.

27. Quiz – Quiz Trade
11 Microscope terms.
classtools.net

28. Handling the Microscope
How do we carry a microscope?
How do we put away a microscope?

29. Links YouTube.com The Light Microscope (first 8 minutes)
Science Skills – Microscope (5 minutes)
YouTube.com
How to correctly use a microscope (1min43sec)
the flip side
Links 6

30. Microscope Mania http://sciencespot.net/Media/micromyspic.pdf
Best link:

31. Magnification Power
The magnification power of a lens is the number of times larger an image looks under the lens.
If you look on each objective there is a number which states its magnification power.
Usually:
Low power (4x), Medium power (10x),
High power (40x) and the ocular lens is (10x)

32. HOW MUCH BIGGER IS IT?
To calculate the total magnification of each objective lens multiply the power of the ocular lens by the power of the objective lens.
Example for total magnification using low power:
Low power objective lens x eyepiece lens
4 x 10 = 40. The total magnification using low power is 40.

33. The scoop on the scope…
We can see better details with higher magnification but we can not see as much of the image!

34. Question????
What are the powers of magnification for each of the objective lenses on our microscopes?
Low Power –
Medium Power-
High Power-

35. Remember …Total Magnification is
power of objective lens power of eyepiece lens

36. Matching Game

37. Questions… 1. What is a cell?
2. What is the total magnification for the medium power objective lens?
What are the four characteristics of living things?

38. Homework… page 401 Questions 2, 3, 5,6,7
No need to write the answers down …. Yet…. But think about how you would answer these questions.