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Natural sciences

Energy transfers and forces

Educator section

Memorandum

  • Examples of self-assessment have been included in the module to assess the learner’s contribution to the debate, and there is also a “control list” for the research assignment.

Leaner section

Content

Activity: to emphasis the sensible use of the resources of the earth [lo 3.2]

RESEARCH ASSIGNMENT

a. Do research into the nuclear accident that occurred at Chernobyl in Russia in 1986. Write (at least one folio sheet) on the fearful effects of the tragedy with regard to the inhabitants and the environment

or

b. Find out what happens to marine life when ships leak oil. Write about it.

c. Arrange a class debate. Form two groups.

One group has to protest against nuclear power and the other group must offer arguments in favour of the use of it.

Make use of your knowledge of nuclear fuels and fossil fuels, as well as of renewable energy sources (the sun, wind and water) when you prepare your arguments.

Make use of the questionnaire that follows to assess your input.

Self AssessmentResearch
Name : ___________________________________________________________
Subject : ___________________________________________________________
Grade : ___________________________________________________________
LEARNER EDUCATOR
YES NO YES NO
Have you used more than one source? ______ ______ ______ ______ Are you sure that you have used your own words throughout? ______ ______ ______ ______ Do you have a meaningful introduction? ______ ______ ______ ______ Did you enjoy the assignment? ______ ______ ______ ______ Were you able to extend your knowledge by executing the assignment? ______ ______ ______ ______

Self Assessment

Debating

Name:

Date:

Always Sometimes Never
Have I stated my arguments clearly? ______ ______ ______
Did the other participants listen to my arguments? ______ ______ ______
Did I support the arguments of the other members of my group? ______ ______ ______
Could I elaborate on the arguments put forward by the other members of my group? ______ ______ ______
Did I use appropriate words? ______ ______ ______
Could I refute the arguments put forward by the other group? ______ ______ ______

CONSERVATION OF ENERGY

Alternative sources of energy, e.g. wind energy, is more environment friendly but very expensive. We therefore have to continue using fossil fuels (coal, oil, gas) and wood. Although new coal and petroleum reserves are still being discovered, these will eventually be exhausted. It is therefore of great importance to use our sources of energy as effectively as possible.

Electricity is convenient and practical, but is has to be generated and this incurs costs. Electrical appliances are classified according to their use of electricity. This is measured in watt or kilowatt (1 kilowatt = 1 000 watt) Electricity accounts are calculated according to the number of units recorded by an electricity meter. This unit is a kilowatt-hour (kWh), i.e. the amount of electricity used by a one-kilowatt appliance in one hour. An automatic washing machine is usually classified as a three-kilowatt appliance. This means that one can expect an account for three units of electricity for each hour that the machine is operated.

Assessment

Learning Outcome 3: The learner will be able to demonstrate an understanding of the interrelationships between science and technology, society and the environment.

Assessment Standard 3.2: We know this when the learner understands sustainable use of the earth’s resources: analyses information related to renewable and non-renewable sources.

Questions & Answers

Application of nanotechnology in medicine
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
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
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
hi
Loga
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
Berger describes sociologists as concerned with
Mueller Reply
what is hormones?
Wellington
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Source:  OpenStax, Natural sciences grade 7. OpenStax CNX. Sep 16, 2009 Download for free at http://cnx.org/content/col11077/1.1
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