When we need water, we simply open the tap. Have you ever wondered where the water in the tap comes from ?
Let’s take a trip with Walter Water Drop on his way to a tap.
Walter in the river on his way to the
From the storage dam, he travels along
to a municipal dam near a town or city.
Walter leaves the municipal dam through
a wide
and this pipe branches into
To help Walter on his way, you have to open the
Explain why a tap that is closed might still drip and therefore waste water.
Try to give three reasons why a disabled person, an older person or young children may find it difficult to turn a tap.
Let’s investigate:
Find out from where your town or city gets water.
Why are storage dams valuable? (give two reasons)
Also find out which large storage dam is in your vicinity.
Which large storage dam is on the Orange River?
What kind of dam provides water to towns and cities?
Which large dam supplies water to Johannesburg?
What is used to catch rain water that runs off roofs?
Which dam is near Paarl?
Assessment
LEARNING OUTCOME 3: SCIENCE, SOCIETY AND THE ENVIRONMENTThe learner will be able to demonstrate an understanding of the interrelationships between science and technology, society and the environment.
ASSESSMENT STANDARDS: WE KNOW THIS WHEN THE LEARNER
3.2 understands the impact of Science and Technology.
Memorandum
Distribution Of Water
Walter: Water Drop’s trip to a tap
Rain falls to the earth from the clouds
Storage dam
a pipeline
pipe ... narrower pipes
tap
A pipe can only leak from two places: from the rubber washer where the water flows out of the tap and from the packing where the flow is controlled.
He tap has not been closed properly
The washer may be cracked or be flattened
Grains of sand that damage the washer may have got into the casing of the tap.
If water leaks from the top of the tap, the nut on the upper turning shaft should be tightened.
g) 1. Their hands may be too small or too weak
Taps used by the public in public places should have long handles that are easy to turn.
The tap might be closed unnecessarily tightly.
Let’s investigate!
Why are storage dams valuable? (two reasons)
Water is available for domestic use at all times, even when rivers might run dry.
We are able to water for irrigation.
Gariep Dam
Municipal storage dams
Vaal Dam
Storage tanks
Wemmershoek Dam
Questions & Answers
differentiate between demand and supply
giving examples
In economics, a perfect market refers to a theoretical construct where all participants have perfect information, goods are homogenous, there are no barriers to entry or exit, and prices are determined solely by supply and demand. It's an idealized model used for analysis,
When MP₁ becomes negative, TP start to decline.
Extuples Suppose that the short-run production function of certain cut-flower firm is given by: Q=4KL-0.6K2 - 0.112 •
Where is quantity of cut flower produced, I is labour input and K is fixed capital input (K-5). Determine the average product of lab
Kelo
Extuples Suppose that the short-run production function of certain cut-flower firm is given by: Q=4KL-0.6K2 - 0.112 •
Where is quantity of cut flower produced, I is labour input and K is fixed capital input (K-5). Determine the average product of labour (APL) and marginal product of labour (MPL)
Quantity demanded refers to the specific amount of a good or service that consumers are willing and able to purchase at a give price and within a specific time period. Demand, on the other hand, is a broader concept that encompasses the entire relationship between price and quantity demanded
Ezea
ok
Shukri
how do you save a country economic situation when it's falling apart
Economic growth as an increase in the production and consumption of goods and services within an economy.but
Economic development as a broader concept that encompasses not only economic growth but also social & human well being.
Shukri
production function means
Jabir
What do you think is more important to focus on when considering inequality ?
sir...I just want to ask one question... Define the term contract curve? if you are free please help me to find this answer 🙏
Asui
it is a curve that we get after connecting the pareto optimal combinations of two consumers after their mutually beneficial trade offs
Awais
thank you so much 👍 sir
Asui
In economics, the contract curve refers to the set of points in an Edgeworth box diagram where both parties involved in a trade cannot be made better off without making one of them worse off. It represents the Pareto efficient allocations of goods between two individuals or entities, where neither p
Cornelius
In economics, the contract curve refers to the set of points in an Edgeworth box diagram where both parties involved in a trade cannot be made better off without making one of them worse off. It represents the Pareto efficient allocations of goods between two individuals or entities,
Cornelius
Suppose a consumer consuming two commodities X and Y has
The following utility function u=X0.4 Y0.6. If the price of the X and Y are 2 and 3 respectively and income Constraint is birr 50.
A,Calculate quantities of x and y which maximize utility.
B,Calculate value of Lagrange multiplier.
C,Calculate quantities of X and Y consumed with a given price.
D,alculate optimum level of output .
the market for lemon has 10 potential consumers, each having an individual demand curve p=101-10Qi, where p is price in dollar's per cup and Qi is the number of cups demanded per week by the i th consumer.Find the market demand curve using algebra. Draw an individual demand curve and the market dema
suppose the production function is given by ( L, K)=L¼K¾.assuming capital is fixed find APL and MPL. consider the following short run production function:Q=6L²-0.4L³ a) find the value of L that maximizes output b)find the value of L that maximizes marginal product
