See Name: _

Experiment: Using the Metric System(B. Science 10-1-4b)

Purpose: To develop skills in measuring with &

converting values in the metric system.

Materials:cardboard boxbeam balancerubber stopper

meter stick test tube

graduated cylinder (10 mL)50 ml beaker cointhermometer

Methods: Part A: Length1. Use the metric ruler or meter stick to make

measurements of the things listed in the resultssection. Make the measurements in centimeters

(cm).2. Convert each of the measured things into theappropriate units indicated at the top of each columnin results part A

Part B: Volume Of A Solidi. Measure and record the length, width, and height of a cardboard box using themetric ruler (record in centimeters).2. Calculate and record the volume of the cardboard box using the equation:volume = length x width x height. Record proper units.3. Convert the cm3 to mL, record this in results.

Piut C: Volume Of liquid - GLASSWARE SAFETY1. Approximately half fill the 10 mL graduated cylinder2. If the graduated cylinder is made of glass, the surface ofthe liquid will be slightfy curved. T~e curved surface ~scalled a meniscus. To measure the volume accurately,your eye must be at the same level as the bottom of themeniscus. This is the mark on the graduated cylinder youmust read. See figure. Record the volume of the watf:~'(hO,l,the test tube to the nearest tenth of a mL.3. Convert the measured volume into the appropriate unitsindicated at the top of each column in results part C.

50

40

~---·lfT>---- Y

~o:

Part D:

See. Name: _1. Before beginning, be sure the riders on the triple-beam balance are moved all theway to the left and the pointer rests on zero.2. Place the 50 ml beaker on the pan of the balance.3. Move the largest rider one notch at a time until the pointer drops below zero. Movethe rider back one notch.4. Move the middle sized rider one notch at a time until the pointer again drops belowzero. Move the rider back one notch.5. Slide the smallest rider (front beam) to the right until the pointer stops at zero. Themass of the object is equal to the sum of the readings on the three beams. Recordresults.

6. Repeat with a coin and then a rubber stopper.7. Convert each of the measured things into the appropriate units indicated at the topof each column in results part D.Part E: Temperature1. Place the thermometer in the warm water. Allow it to remain in the water for a few

minutes. What is the temperature of the water in DC?2. Why did we have to let the thermometer rest in the water for awhile?

cg kg

cg kg

cg ----!<ll

m km

m km

m km

m km

m km

Results: Part A: Lengthwidth of science book

length of science desk

length of pencil

diameter of pencil

height of (your great) teacher

Part B: Volume Of A Sofidlength width

box cm _ em

Part C: Volume Of Liquidvolume of waterPart D: Massmass of 50 mL beaker

mass of coin

mass of rubber stopper

Part E: Temperature1. Temperature:

cm

em

em

em

cm

heightem

mL

999

2. Why?

mmmmmm

mm

mm

volumecm3

cL

mg

mg

mg

L

mL

cm3

Discussion: 1. Convert the following metric measurements to indicated units:2.5 m = km = __ dm = __ em = __ mm = ----fJm37g = __ kg= __ dg = __ cg = __ mg =---flg.2 L = __ kL= __ dL = __ cL = __ mL = ;UL

2.4 ml = __ cm3

2. As we study different aspects of biology, I want you to keep in mind the awesomethings that God not only created but had to properly design. Read Psalms 33:6 - 9and comment on what David was praising God for.