1 module in sci

7/27/2019 1 Module in Sci

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Republic of the Philippines

Department of Education

Region 1

Division of Pangasinan II

MANAOAG NATIONAL HIGH SCHOOL

Manaoag, Pangasinan

1, 2, 3, 4

LETS MEASURE THE

WORLD

PREPARED BY :

AILEEN D. GOMEZ

RINA B. RAMOS

STEVEN C. GAERLAN

JOHN ROBERT C. AQUINO


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Hello there my dear students! Are you

ready to start our lesson?

In this topic you will know about the

measurement we use in our daily life. This

module, help you to understand what is

the difference between mass and weight

and other important things that you want

to know about this topic , so lets proceed,

now if you are ready !


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m

INTERNATIONAL SYSTEM International system is the modern form of the metric system and is the

worldsmost widely used system of measurement, used in both everyday

commerce and science. It comprises a coherent system of units of measurement

built around seven base unit, 22 named and an indeterminate number of

unnamed coherent derived units, and a set of prefixes that act as decimal based

multipliers.

LESSON 1: SI UNITS


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SI UNITSQUANTITY NAME OF BASE SI UNIT SYMBOL

LENGTH METER OR METRE m

MASS KILOGRAM Kg

TIME SECOND s

ELECTRIC CURRENT AMPERE A

THERMODYNAMIC

TEMPERATURE

KELVIN K

AMOUNT OF SUBSTANCE MOLE mol

LUMINOUS INTENSITY CANDELA cd


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Write TRUE if the statement is correct and if FALSE change the underlined word

to the correct answer .

1.Metric system is the worlds most widely used system of measurement.2.The international system is used in scientific work and in everyday measurement in

many parts of the world .

3.Small letter m is the correct symbol for mass.4.There are 22 named and an indeterminate number of unnamed science derived

units.5.The correct unit of electic current is ampere.

II. Matching type : match the quantity with their name of base si unit.

A. B.1.Luminous intensity a. second2.Time b. kelvin3.Amount of substance c. candela4.Length d. mol5.Thermodynamic Temperature e. meter


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Science makes use of several measuring instruments.

*For measuring volumes of liquid , the graduated cylinderis most often

used.

*For measuring smaller volumes of liquids, the measuring pipets and

syringes are used.

*For measuring mass, aplatform balance is most often used. The mass of

an object has,a while weight refers to the effect of the gravity on the

object. The SI unit for weight is newton (N).

* A vernier caliperis used to measure length of small objects. Aruler, a

meter stick and a tape measure are more familiar tools used to

LESSON 2: MEASURING

INSTRUMENTS


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measure the length ,width or height of the objects.

* A thermometeris used to measure temperature. Thermometers make

use of either mercury or alcohol. Both substances are very sensitive that

they rises or fall when there is a change in temperature .

I. Arrange the jumble letter to answer the following:1.Used for measuing mass. O T F L A P M R N A A B L E C2.Used to measure length of small objects. N V R E E R I L R C A E P L3.Used to measure volume of liquid. U G R D A A D E N T N C R Y E I L D4.Used to measure temperature. R T E H T E E R M M O5.Used to measure smaller volumes of liquid. T P I S E P and G S I N Y E S R

II. Draw the following measuring tools .1.meter stick

2. graduated cylinder

3. platform balance

4. themometer

5. pipets


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Ooppsss ! sorry students , I forgot to tellthat before you proceed to our lesson, you

need to answer the following question below.

THANK YOU AND GOOD LUCK !PRE-TEST :

MULTIPLE CHOICE : Choose the correct answer to the

following question.

1. ________ is anything that has mass and volume

a. weight b. mass c. earth

2.This is the measure of the gravitayional pull of an object.

a. mass b. weight c. air


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3. Which is not true asbout uses of science measurement ?

a. science uses measurement to quantify industry .

b. measurement consist of number and unit.

c. used for scientific purposes.

4. It refers to the certain digits and the estimated digit of a

measurement.

a.Scientific notation b. dimensional analysis c. significant figure

5.Refers to the nearness of measurement to a reference value or

standard value.

a.Accuracy b.precision c. scientific notation

IDENTIFICATION : Identify what each of the following scenarios

describe. Write A, if it describes accuracy ; B, if

precision; and C if both accuracy and precision .

________ 1. At a birthday party , many blindfolded teens pinned the tail


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of the donkey on its nose instead of on its rear .________2.Two carpenters were measuring the length of a 12.5 by 10

Rectangular room. One carpenter measured the length to be

12 ft and 6.5 in. the other carpenter measured it to be 12

Ft and 5 in.

________3.Cellphones have built in locator systems that are able to

indicate their location within a radius of about five km.

________4.A chemist determined that the dissolved oxygen level of the

fishpond water Dropped to about 1.5 mg/L at 3:00 am. The

dissolved oxygen was actually 1.8 mg/L.________5.A student recorded the following temperature as the boiling

point of water :80, 81, 80 and 82 degree celsius . (hint :

what is the boiling point of water ?)


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III. Give the correct number of significant figures in each.

1.75 6.0.003762.0.75 7. 4.004.00

3.480 8. 400 400

4.9 500 9. 0.04050

5.0.9500 10. 76243

IV: Rewrite the following into standard notation.

1. 6.23 x 10-22. 5.70 x 1043. 8. 256 x 10104. 4.005 x 10-255. 3.4 x 1030


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