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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 is variations in raman spectra for nanomaterials
Jyoti Reply
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
Introduction about quantum dots in nanotechnology
Praveena Reply
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 did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Life orientation grade 4. OpenStax CNX. Sep 18, 2009 Download for free at http://cnx.org/content/col11094/1.1
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