Rules for using the microscope. Carry with two hands Always start with low power.

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Good afternoon future scientists, please work with your partner to complete the Measuring in SI worksheet. Do you know what is the fastest thing on earth? http://www.nsta.org/

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Good afternoon future scientists, please work with your partner to complete the Measuring in SI worksheet. Do you know what is the fastest thing on earth? http://www.nsta.org/. Rules for using the microscope. Carry with two hands Always start with low power. Bring the stage up - PowerPoint PPT Presentation

Transcript of Rules for using the microscope. Carry with two hands Always start with low power.

Page 1: Rules for using the microscope. Carry with two hands Always start with low power.

Good afternoon future scientists, please work with your partner to complete the Measuring in SI worksheet. Do you know what is the fastest thing on earth?

http://www.nsta.org/

http://www.nsta.org/
Page 2: Rules for using the microscope. Carry with two hands Always start with low power.

Rules for using the microscope.1.Carry with two hands2.Always start with low power.3.Bring the stage up4.Place specimen on the slide and cover with a cover slip

Page 3: Rules for using the microscope. Carry with two hands Always start with low power.

This is a microscope slide.

This is a cover slip.

Page 4: Rules for using the microscope. Carry with two hands Always start with low power.

Part 2- The Microscope

•Invented in the 1500s

•Robert Hooke was the first to see cells

•Anton van Leeuwenhock was the first to see living things

Page 5: Rules for using the microscope. Carry with two hands Always start with low power.

Total Magnification Power

•The power of the eyepiece lens X the power of the objective lens being used.

•10x X 40x = 400x

Page 6: Rules for using the microscope. Carry with two hands Always start with low power.

International System (SI)

of Measurement

Page 7: Rules for using the microscope. Carry with two hands Always start with low power.

Advantages of the Metric System

• Creates an international system of measurement that uses the same standards world wide

• Ease of recording and calculating– All units are based on units of 10– Very precise measurements can be recorded

with decimals NOT fractions.

Page 8: Rules for using the microscope. Carry with two hands Always start with low power.

Subdivisions can be divided again and again for more

precision….1 unit

.01 unit

.001 unit

(Again by tenths)

Page 9: Rules for using the microscope. Carry with two hands Always start with low power.

“Base” Units• Unit of Length- Meter

– Based on the distance from the N. Pole to the equator

• Unit of Volume- Liter– The space an object takes up (solid, liquid or

gas)

• Unit of Mass- Gram– The amount of matter in an object

Page 10: Rules for using the microscope. Carry with two hands Always start with low power.

•A. FROM KILO TO MILLI

Important prefixes to know:

BASE UNIT

DECA 10x HECTA 100x

KILO 1000x

DECI .1

CENTI .01MILLI .001

The base of any unit determined by what you are

measuring

A prefix that makes a unit 10x

larger than the base

This prefix changes the

base into a unit 100x larger

This prefix changes the

base into a unit 1000x larger

This prefix changes the

base into a unit 1/10 as large as

the base

This prefix changes the

base into a unit 1/100 as large

as the base

This prefix changes the

base into a unit 1/1000 as large

as the base

Metric prefixes can be placed in front of all

metric units!

Page 11: Rules for using the microscope. Carry with two hands Always start with low power.

BASE UNIT

DECA HECTA KILO

DECI

CENTI

MILLI

Come up with a

sentence to order

the prefixes!

How are we going

to remember

these?

King

Henry

Died

By

Drinking

Chocolate

Milk

Page 12: Rules for using the microscope. Carry with two hands Always start with low power.

Metric ToolsBalance – used to

measure mass (grams)

Graduated cylinders and

beakers – used to measure

volume(liters)Meter stick –

used to measure length

(meters)

http://school.discovery.com/clipart/clip/scale.html
http://school.discovery.com/clipart/clip/flask3.html
Page 13: Rules for using the microscope. Carry with two hands Always start with low power.

Microscope• Used to magnify objects and make small

details more apparent.

• Compound microscopes have two lenses that magnify the object. The eye piece and the objective lens.

• Total magnification = eye piece X obj. lens

• 3 objective lenses: 4x, 10x, 40x

Page 14: Rules for using the microscope. Carry with two hands Always start with low power.

Click on Me

Click on Me

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Click on Me

Click on Me

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Click on Me

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Click on Me

Click on Me

Click on Me

Click on Me

Click on Me

Page 15: Rules for using the microscope. Carry with two hands Always start with low power.

#9 Eye Piece—The part you look at with your eye. Usually 10 X magnification.

Click Here to Return to the Main Slide

Page 16: Rules for using the microscope. Carry with two hands Always start with low power.

Click Here to Return to the Main Slide

#10 Arm – Used to safely transport microscope

Page 17: Rules for using the microscope. Carry with two hands Always start with low power.

Click Here to Return to the Main Slide

#11 Stage – Slides are placed on this

Page 18: Rules for using the microscope. Carry with two hands Always start with low power.

Click Here to Return to the Main Slide

#12 Coarse Adjustment – Used to make large changes in focus. NOTE Never use this when viewing on high power

Page 19: Rules for using the microscope. Carry with two hands Always start with low power.

Click Here to Return to the Main Slide

#13 Fine Adjustment – Used to make small adjustments of focus on high power

Page 20: Rules for using the microscope. Carry with two hands Always start with low power.

Click Here to Return to the Main Slide

#14 Base – Used to safely transport the microscope

Page 21: Rules for using the microscope. Carry with two hands Always start with low power.

Click Here to Return to the Main Slide

#1 Body Tube – Reflects light up to the viewers eye

Page 22: Rules for using the microscope. Carry with two hands Always start with low power.

Click Here to Return to the Main Slide

#2 Rotating Nose Piece – Allows for quick change of objectives

Page 23: Rules for using the microscope. Carry with two hands Always start with low power.

Click Here to Return to the Main Slide

#3 Low Power Objective – The first lens you use. 4 X

Page 24: Rules for using the microscope. Carry with two hands Always start with low power.

Click Here to Return to the Main Slide

#4 Medium Power Objective – The second lens you use. 10 X.

Page 25: Rules for using the microscope. Carry with two hands Always start with low power.

Click Here to Return to the Main Slide

#5 High Power Objective – The highest magnification used. 40 X. NEVER use the course adjustment when using this lens.

Page 26: Rules for using the microscope. Carry with two hands Always start with low power.

Click Here to Return to the Main Slide

#6 Stage Clips – Use to keep the slide in place.

Page 27: Rules for using the microscope. Carry with two hands Always start with low power.

Click Here to Return to the Main Slide

#7 Diaphragm – Use to vary the amount of light passing through the slide. Usually it is better if the amount of light is low.

Page 28: Rules for using the microscope. Carry with two hands Always start with low power.

Click Here to Return to the Main Slide

#8 Light Source – Sends light up through the diaphragm and through the slide for viewing


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