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Natural sciences

Grade 8

Biodiversity

Module 9

World population

In the previous learning unit we mentioned that the growth in world population would determine whether sustainable development is possible and that we need to be thoroughly aware of this.

Activity 19:

To interpret information on the world population

  • Study the STATISTICS that follows and calculate the natural growth per unit.

WORLD POPULATION GROWTH

PER UNIT OF TIME

PER YEAR: Births: 131 468 233 Deaths: 54 147 021

Natural growth:____________________________

PER MONTH: Births:10 955 686 Deaths:54 147 021

Natural growth:______________________________

PER DAY: Births: 360 187 Deaths: 148 348

Natural growth:______________________________

PER HOUR: Births: 15 008 Deaths: 6 181

Natural growth:_______________________________

PER MINUTE: Births: 250 Deaths: 103

Natural Growth:_______________________________

…..............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................

  • World population reached the 6 BILLION mark on 12 October 1999.

1. What are the latest values on the World POP clock?

2. What will these be by 2050?

Activity 20: TO REFLECT ON OWN ROLE IN ENSURING THE WELL BEING OF THE EARTH

  • Write about your impressions of the future of human beings on planet Earth and on the role that you could play.

Assessment of impressions:

Did you provide meaningful impressions of the earth’s FUTURE?

[ LO 3.1]

Assessment

LEARNING OUTCOMES (LOs)

LO 3

SCIENCE, TECHNOLOGY AND THE ENVIRONMENT

Learners are able to show understanding of the underlying connections of technology, the community and the environment.

ASSESSMENT STANDARDS (ASs)

We know this when the learner:

3.1 understands science and technology in the context of history and personal knowledge;

  • understands the impact of science and technology.

Memorandum

WORLD POPULATION

  • Organise a visit to the computer centre or obtain sources from the internet for the use of the learners.
  • Visit the www.census.gov: website
  • Graph paper for the exercise.

ASSESSMENT GRID: Transfer values

Questions & Answers

where we get a research paper on Nano chemistry....?
Maira Reply
nanopartical of organic/inorganic / physical chemistry , pdf / thesis / review
Ali
what are the products of Nano chemistry?
Maira Reply
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
learn
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
learn
Google
da
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Bhagvanji
hey
Giriraj
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
ya I also want to know the raman spectra
Bhagvanji
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
Nasa has use it in the 60's, copper as water purification in the moon travel.
Alexandre
nanocopper obvius
Alexandre
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
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
Hafiz
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
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Source:  OpenStax, Natural sciences grade 8. OpenStax CNX. Sep 12, 2009 Download for free at http://cnx.org/content/col11050/1.1
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