2.4: Using the circular flow model
to look at the influences on economic
activity (PART 1)
Description
(Economics SAC 2) Mind Map on 2.4: Using the circular flow model
to look at the influences on economic
activity (PART 1), created by mikaela.farrugia on 18/03/2014.
2.4: Using the circular flow model to look at
the influences on economic activity (PART 1)
to understand the general gist of economic
activity we need to use the circular model
Circular Flow model - illustrates how the Australian
economy works and how its different parts are
interrelated. Additionally it identifies some of the
macroeconomic variables affecting our countries
economic conditions.
The model’s five sectors
1- The Household sector
everyone included
Some people sell their resources (natural, labour and
capital) to firms and use the money to demand or buy
finished goods. Helps satisfy their needs and wants.
2- The Business sector
purchases or demands resources from households which are
then converted into finished goods and services.
sell goods to the household sector
households and business both act as sellers and buyers
three sub sectors to the business sector; government, financial and
overseas
3- The financial sector
made up
banks, building
societies, stock
exchange,
credit unions
and finance
companies.
They borrow
household savings (S)
and lend these to
people who want
credit for investment
and business
expansion (I)
4- The government sector
collects revenue from
taxes (T)
They use this revenue
to pay for government
spending (G) and other
funds spent on goods
and services including
public hospitals and
schools.
5- The overseas sector
Buy imports to satisfy out wants (M)
Sell exports overseas (X)
Using the model to outline the factors affecting economic activity
The model & GDP
is affected by 2
things - the level of
aggregate
demand/aggregate
supply
Aggregate Demand -
sum of spending on
goods and services
produced by a nation
over a year. It is made
up of C+I+G-X-M
Aggregate Supply - total supply of goods
and services that a nation can potentially
produce. Especially affected by the
availability of a nations resources and the
efficacy with which these are used.
1 - The importance of aggregate demand for the short term or cyclical level of economic activity
GDP in short terms depends on AD
AD is also affected by the amount
leakages relative to the number of
injections
Increases in leakages relative to injections =
decreases AD. Usually causes a contraction or slow
down. falls severely, could be in recession
A fall in leakages relative to
injections = increase in
AD. Expansions follow and could
cause a boom.
2 - The importance of aggregate supply for the long term structural level of economic activity
Supply affects the speed limit or potential
rate of economic growth.
Over years, rate of growth and production levels rise.
total AS of goods and services that nations can
provide is affected by availability of resources and
their efficiency
Long term trend line slopes upwards to the right. Around
3.25% per year in Australia.