<< Chapter < Page Chapter >> Page >

Life orientation

Grade 4

Good health

Module 3

A healthy environment and personal health

Discuss three ways in which nature influences personal, physical and emotional health.

Be sensible in the sun

We live in a country that is known for its wonderful sunshine. The sun can help you to feel very healthy and it can help your body to produce important vitamins. People also make use of the sun to dry fruit such as peaches, and vegetables such as tomatoes, and in this way these products can be preserved. Scientists use the rays of the sun to generate power that can be used as a substitute for electricity. We call it solar power.

The sun can also cause damage. When people suntan a lot on the beach in the midday heat - say at 12:00 - the skin becomes so badly damaged that they might develop serious skin problems, such as skin cancer. Also, if you exercise very strenuously in the heat of the sun without drinking water, you would run the risk of dehydrating. Dehydration occurs when the body loses too much moisture, and you feel nauseous and ill. Most plants shrivel up in the hot sun if there isn’t enough water.

Activity 1

To design a tourist pamphlet [lo 1.2]

Group work. You have to design a pamphlet for a travel agency in which you tempt foreigners to come to South Africa for a holiday in the sun.

Activity 2

To compile a list of precautions against the sun [lo 1.2]

Make a list of at least five golden rules to which tourists should adhere when they are on holiday in our sunny country in summer.

Assessment

LEARNING OUTCOME 1: HEALTH PROMOTION

The learner will be able to make informed decisions regarding personal, community and environmental health.

Assessment Standard

We know this when the learner

1.2 explores and reports on links between a healthy environment and personal health.

Questions & Answers

what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
Daniel
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
Maciej
characteristics of micro business
Abigail
for teaching engĺish at school how nano technology help us
Anassong
Do somebody tell me a best nano engineering book for beginners?
s. Reply
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
s.
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
Tarell
what is the actual application of fullerenes nowadays?
Damian
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
Tarell
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
Virgil
is Bucky paper clear?
CYNTHIA
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Harper
Do you know which machine is used to that process?
s.
how to fabricate graphene ink ?
SUYASH Reply
for screen printed electrodes ?
SUYASH
What is lattice structure?
s. Reply
of graphene you mean?
Ebrahim
or in general
Ebrahim
in general
s.
Graphene has a hexagonal structure
tahir
On having this app for quite a bit time, Haven't realised there's a chat room in it.
Cied
what is biological synthesis of nanoparticles
Sanket Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
China
Cied
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
Porter
many many of nanotubes
Porter
what is the k.e before it land
Yasmin
what is the function of carbon nanotubes?
Cesar
I'm interested in nanotube
Uday
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
AMJAD
preparation of nanomaterial
Victor Reply
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
Privacy Information Security Software Version 1.1a
Good
Got questions? Join the online conversation and get instant answers!
QuizOver.com Reply

Get the best Algebra and trigonometry course in your pocket!





Source:  OpenStax, Life orientation grade 4. OpenStax CNX. Sep 18, 2009 Download for free at http://cnx.org/content/col11094/1.1
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Life orientation grade 4' conversation and receive update notifications?

Ask