# 3.18 To calculate the density of water

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## Memorandum

It is important that learners know that the density of water is 1 g/cm 3 . This means that 1 litre of water weighs 1 kg.

The assessment proposed in the module is important, also for the learner's portfolio.

## Activity: to calculate the density of water [lo 2.3, lo 2.4]

The readings below were obtained after the mass and volume of water were measured:

 Reading 1 Reading 2 Reading 3 Reading 4 Reading 5 Mass: 50 gVolume: 50 cm 3 Mass: 30 gVolume: 30 cm 3 Mass: 90 g Volume: 90 cm 3 Mass: 80 gVolume: 80 cm 3 Mass: 60 gVolume: 60 cm 3

Apply the readings above to a graph to show the different ratios and indicate the density of water. (The density is obtained by dividing the mass by the volume.)

CRITERIA FOR ASSESSING THE TRANSLATION TASK:

2. Both axes correctly marked.

3. Appropriate scale for both axes.

4. Calculated value of the density is correct.

5. All coordinates are drawn correctly.

6. Density correctly calculated and shown (Density: 1 g/ cm3).

ASSESSMENT ACCORDING TO THE CRITERIA

 LO MARKS LEVEL KEY TO LEVEL 1 and 2 1-34% 1 Unable to prepare the graph 35-39% 2 Up to 4 mistakes on the list of criteria 40-69% 3 2 or 3 mistakes on the list of criteria 70-100% 4 No or only one mistake
 LO 2.3 LEVEL LO 2.4 MARK

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## Assessment

Learning Outcome 2: The learner will know and be able to interpret and apply scientific, technological and environmental knowledge.

Assessment Standard 2.3: We know this when the learner interprets information by identifying key ideas in text, finding patterns in recorded data, and making inferences from information in various forms (e.g. pictures, diagrams, text);

Assessment Standard 2.4: We know this when the learner application of knowledge: applies knowledge appropriately by connecting the learnt concept to a variation of the known situation.

any tip for igcse economics exam?pls
well
The
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what are the variables that affect demand
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what are the variables that affect demand
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what are the variables that affect demand
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what are the variables that affect demand
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price of the related goods 2 price of the given commodity 3 income of the consumer 4 taste and preference 5 expectation in the future price
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pls the taste and preference
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explain briefly
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a consumer taste and preference commodity changes for a time the man becomes
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sorry sorry
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is when the price of a commodity becomes high and can't afford example Samsung instead of iPhone
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consumers who have high intense for goods will purchase the goods even if the price of that commodity increases because he or she preferred that commodity.people will be prefer iphone as its price increase
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as usual bad taste of preference is when a consumer regrets from one commodity to another in terms of the price
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thanks alot
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you're welcome
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#Preference; #Income #Test
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#Market is The Place Where Buyers And Sellers Are Exchanging Their Goods And service. #
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difference between macro and micro economics
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good
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pls can someone differentiate between the perfectly elastic, perfectly inelastic and unitary
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Perfectly inelastic is when the coefficient is equal to zero Unitary is when the coefficient is equal to one But am not sure if we have perfectly inelastic
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I'm kind off confuse abt the PED, IED and co are they the types of elasticity we've
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Yh the types are price elasticity cross and income elasticity of demand
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do we've specific formulaes to calculate for each of them
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P2-P1÷P1×100or Q2-Q1×Q1×100 PED
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***tutor2u.net/economics/reference/price-elasticity-of-demand
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They are elasticity coefficient
John
@John I don't get u well pls
yhar
whichone
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P2-P1Ã·P1Ã100or Q2-Q1ÃQ1Ã100 PED @john pls tis is what m talking abt
yhar
Yh is the formula for PED
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Pls are you having a for PED
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thank u very
yhar
dy
Jobang
what is economics
Tayyeb
economics is a science which studies human behaviour as a relationship between ends and scarce means which have alternative use
John
is a science which study human behavior as a relationship between ends and scarce means which have alternative uses
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yes this is because economic provide a body of knowledge on human economic principles under theories and these theories can be verified with real world data using science method in other words it was scientific method in arriving at solution identification of problem or basic data collection among
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unitary ElasticWhen Elasticty =1 Perfectily Elastic When 0<1 inelastic when 0>
Dereje
Pls is anyone having the NovDec questions?
No
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what is micro economics
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Production Possibility Frontier
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It refers to a curve or graph which shows the possible contributions of maximum alternative of commodity that can be produced in an economy
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thanks
Endam
Thanks John talkx of defination pls
Endam
I don't get you
John
guys Any One With Novdec Questions 2019?
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depreciate of quality taste
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And what can be the advantages too
Enow
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Reduce importation how pls
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just trying ⚠ factors that affect unemployment - the rate of imported inflation - interest rates - levels of investment
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I'm an economics student, what I do now will make my life a success,
mostafiz
Thank you
Tantoh
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unemployment is when legitimate labour Force are not engaged in the economy.
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economic growth is the already settled growth of the economy and National income can be used in verification of that while economic development is the process of improvement in an economy
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