Unit 1: LIFE & Science Chapter 1 & Lab Safety Quiz Wednesday!

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Presentation transcript:

Unit 1: LIFE & Science Chapter 1 & Lab Safety Quiz Wednesday!

Monday August 26, 2013 Get out your vocab. practice work for chapter 1.4 and prepare for the Daily Quiz.

Check your homework: All but #6

Section 4 Tools & Techniques

Lab Safety Appendix, p Appendix, p P. 24P. 24

Lab Safety Appendix, p Appendix, p P. 24P. 24

Lab Safety Appendix, p Appendix, p P. 24P. 24

Metric Units--REVIEW KHDBDCMKHDBDCM –Kilo-, hecta-, deca-,, deci-, centi-, milli-

Tables 1-2 & 1-3, page 23

Which tool would you use to… Look at an antLook at an ant Measure the mass of a fishMeasure the mass of a fish Look at a butterfly wingLook at a butterfly wing Measure the length of a caterpillarMeasure the length of a caterpillar Look at a cat hairLook at a cat hair Measure the temperature of the oceanMeasure the temperature of the ocean Measure the volume of a seawater sampleMeasure the volume of a seawater sample Look at a red blood cellLook at a red blood cell

Microscopes!

Light Microscopes (LM) Pollen Butterfly wing Flea Diatom p.21p.21 4 Main Parts:4 Main Parts: –Eyepiece (ocular), objective lenses, stage, light source Focuses light raysFocuses light rays Dead or living specimen mounted on glass slideDead or living specimen mounted on glass slide Ones we’ll useOnes we’ll use

Parts & Use p more on this later!

Electron Microscopes Focuses beams of electronsFocuses beams of electrons See smaller things (dead)See smaller things (dead) TEM: “flat” sections; Up to 200,000xTEM: “flat” sections; Up to 200,000x SEM: 3-D images; Up to 100,000xSEM: 3-D images; Up to 100,000x

Electron Microscopes

and Object Size and Magnifying Power of Microscopes

MagnificationResolution Increase of object’s apparent SIZE Power to show details clearly Light: 100x max objective x 10x ocular = 1000x Total Mag.

Another Useful Tool...INTERNET! IF used properly!!IF used properly!! W/a partner:W/a partner: –Read p. 20, answer questions

Microscope Lab: Draw one on the back! LABEL it!