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Natural sciences

Energy transfers and forces

Educator section


  • 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


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


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


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 : ___________________________________________________________
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




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? ______ ______ ______


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.


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

Apply social psychology on real life in Nigerian universities campus
tyosaa Reply
what is the meaning of an idiosyncratic pattern
Krystle Reply
I am here for the first time just here to learn...
michael Reply
hi I'm new on here first time
hi,am new here
what is this group all about
Suppose an individual with OCD experiences obsessive thoughts about germs, contamination, and disease whenever she encounters a doorknob. What might have constituted a viable unconditioned stimulus? 
la Reply
What are factors that influence learning?
Enos Reply
Environment Heredity(I am not sure about heredity)
Helpful. .. thanks
Sure, anytime
I have other questions also
Based on the factors affecting learning, how do we improve learning
I think that addressing that everyone learns in their own time
Peer group influence can also be another reason
Also knowing what's going on at home. what pressure are the parents putting on them.
am I close or no
also is there a lack of care? going one more step. with peer groups do an activity that shows how much they have in common
I think one's society has a big role to play in determining what/when & how he/she learns.
multiple reasons at different stages. at the earliest stages of development in a child is behaviour of people around. A baby starts learning basic social expressions and actions by mimicking the people around it. further social and cultural practices enforces learning and behaviour
from need to nutrition everything affect development and learning when choosing on a single factor of influence it is necessary to keep these other factors in the mind as environment around people is very plastic and flexible and there are many variables playing active role
social interaction is surely a big influence hence can be used to improve learning.
to encourage learning it is important to establish curiosity and notion of possibility for more perspectives habit of questioning possibilities and cause and effect in a great way to encourage learning in my opinion. language is another important factor
under what schedule of reinforcement do animals learn from ?
Phelisa Reply
the role of emotional intelligence in a courtship behavior
Caren Reply
describe the task and roles of industrial psychologist in solving the problems
Solomzi Reply
hi I'm Vaishnavi and I'm new to psychology:)
Vaishnavi Reply
what is motivation
Muhammad Reply
getting passionate about something and strive for success
observation and method based
Winter Reply
the meaning of science
soul is the Greek word for psyche
psychology is scientific research of the human brain.
Psychology is a study of human mind and behaviour
psychology is a social science which aim at studying the mind as it affect the behavior of an individual.
write and explain four psychosexual stages of personality development
I'm asking on behalf of someone How can a guy get over his weakness for girls? Like the person have soft spot for every girl and he thinks he love them then suddenly stuff change.... Like a switch
Ajayi Reply
whats the age of the boy?
16 or 17
lol. it gets over with time. it's not something that can be changed instantly. and for teenagers.. anyone of opposite sex is a tasty lollipop.
yes in time it will go away but could also take years
maybe because he doesn't really have mind of making decisions at the moment on what he need and what he doesn't want
maybe he's trying to find someone to love because he's either lacked loved and feel that's the only way to feel loved or he's lonely and feels a girl can make it better . either he's got deal with the core issue
its natural. I think it should be like this. girls also have weakness toward guys. but you can overcome on few things like concept of beauty. first step is realisation which will grow in you. also discipline help in these things.
what are cluster A disease?
Saee Reply
because psychology is a natural science as well as a science. it's a interdisciplinary subject
Kamakshi Reply
yes absolutely we cabt out Psychology completely into science dur to its various measuring aspects
cannot* put*
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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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