lab & safety skills manual

Lab & Safety Skills Manual

Making Tables

Number of animal species

Phylum Number

Coelenterata 11,000

Mollusca 80,000

Arthropoda 826,000

Chordata 47,000

Echinodermata 5,000

Worms 26,000

Porifera 5,000

Making Graphs

Making Histogram Graphs in Microsoft Excel

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Making Graphs

Era Number of years

Number of degrees

Cenozoic 65,000,000 5

Mesozoic 160,000,000 13

Paleozoic 345,000,000 28

Precambrian 3,930,000,000 314

Making Graphs

Making Circular Graphs in Microsoft Excel

Cenozoic

Mesozoic

Paleozoic

Precambrian

a. Eyepiece

b. Body tube

c. Revolving nosepiece

d. Low-power objective

e. High-power objective

f. Stage

g. Stage clips

h. Base

i. Light source

j. Diaphragm adjustment

k. Arm

l. Fine focus adjustment

m. Coarse focus adjustment

Laboratory Skills Assessment

How many millimeters wide is the field of view shown? 12.0 mm

Laboratory Skills Assessment

How many millimeters wide is the field of view shown? 12.0 mm

High Power Objective lens = 40XLow Power Objective Lens = 10X

High Power Field of view = Diameter of the Low Power field of view ÷ (HP ÷ LP)

(HP) ÷ (LP) ------ 40X ÷ 10X = 4

2000µ ÷ 4 = 500µ

Organism 1: Approx. 1.3 cm

Field of View: Approx. 3.3 cm

500μ*1.3cm

3.3 cm

Find the width of the organisms by measuring across the organism at several places. Find the central tendency or average width.

1.5 cm

1.4 cm

1.2 cm

1.3 cm

1.1 cm

1.3 cmAverage Width

#4

500µ * 1.3 cm / 3.3 cm = 197µ

500μ * 0.56 cm / 3.3 cm = 84.8μ

500µ * 0.75 cm / 3.3 cm = 113.6μ

The mass indicated on the scale is:

47.52 g

The mass indicated on the scale is:

129.07 g

a. 12.5 cm f. 12.0 cm

b. 11.3 cm g. 9.7 cm

c. 13.25 cm h. 12.97 cm

d. 13.95 cm i. 13.34 cm

e. 10.3 cm j. 11.71 cm