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Natural sciences

Grade 4

Energy and change

Module 33

Saving electricity

Activity:

To discuss ways of saving electricity

[lo 3.2]

Bring old electricity accounts from your homes to school and discuss them. See how the amounts on the accounts vary from month to month, from winter to summer and from house to house.

Discuss suggestions on how to economize on the use of electricity at home. Share your ideas with you parents when you are at home.

How to save electricity

Examine the pictures below. Indicate where you agree by placing a tick in the appropriate place and indicate where you disagree by placing a cross in the appropriate place.

Do not put warm food or fluids in the fridge.

Do not boil water in a pot on the stove – rather use the kettle.

Do not use a pot with an uneven bottom, because it requires more heat.

Do not use a big stove-plate to heat up a small pot or saucepan – unused heat is wasted.

Do not use the stove as a heater – a heater works cheaper.

Switch off lights when they are not necessary.

Do not use more than necessary warm water to bath.

You use less water when you shower than when you bath.

Use cold water to do your washing.

REMEMBER: you pay for the electricity that you waste!

Select a room in your home. Look through old magazines to find and cut out pictures of the appliances that you use most frequently in that room. Advertisements from furniture stores will also be handy for this. Paste the pictures in the space below.

Assessment

LEARNING OUTCOME 3: SCIENCE, SOCIETY AND THE ENVIRONMENTThe learner will be able to demonstrate an understanding of the interrelationships between science and technology, society and the environment.

Assessment Standard

We know this when the learner

3.2 understands the impact of Science and Technology.

Memorandum

How to conserve (save) electricity:

  • It is wrong to put warm food in the refrigerator.
  • Boiling water in a saucepan is wrong; in a kettle is correct.
  • A warped saucepan is wrong; a level (flat) base is correct.
  • A small saucepan on a large plate is wrong; a small saucepan on a small plate is correct.
  • A stove as a heater is wrong; a proper heater is correct.
  • To switch off unnecessary lights is correct.
  • Too much water in a bath is wrong.
  • Having a shower is correct.
  • Hot water for washing is wrong.

Questions & Answers

what is mutation
Janga Reply
what is a cell
Sifune Reply
how is urine form
Sifune
what is antagonism?
mahase Reply
classification of plants, gymnosperm features.
Linsy Reply
what is the features of gymnosperm
Linsy
how many types of solid did we have
Samuel Reply
what is an ionic bond
Samuel
What is Atoms
Daprince Reply
what is fallopian tube
Merolyn
what is bladder
Merolyn
what's bulbourethral gland
Eduek Reply
urine is formed in the nephron of the renal medulla in the kidney. It starts from filtration, then selective reabsorption and finally secretion
onuoha Reply
State the evolution relation and relevance between endoplasmic reticulum and cytoskeleton as it relates to cell.
Jeremiah
what is heart
Konadu Reply
how is urine formed in human
Konadu
how is urine formed in human
Rahma
what is the diference between a cavity and a canal
Pelagie Reply
what is the causative agent of malaria
Diamond
malaria is caused by an insect called mosquito.
Naomi
Malaria is cause by female anopheles mosquito
Isaac
Malaria is caused by plasmodium Female anopheles mosquitoe is d carrier
Olalekan
a canal is more needed in a root but a cavity is a bad effect
Commander
what are pathogens
Don Reply
In biology, a pathogen (Greek: πάθος pathos "suffering", "passion" and -γενής -genēs "producer of") in the oldest and broadest sense, is anything that can produce disease. A pathogen may also be referred to as an infectious agent, or simply a germ. The term pathogen came into use in the 1880s.[1][2
Zainab
A virus
Commander
Definition of respiration
Muhsin Reply
respiration is the process in which we breath in oxygen and breath out carbon dioxide
Achor
how are lungs work
Commander
where does digestion begins
Achiri Reply
in the mouth
EZEKIEL
what are the functions of follicle stimulating harmones?
Rashima Reply
stimulates the follicle to release the mature ovum into the oviduct
Davonte
what are the functions of Endocrine and pituitary gland
Chinaza
endocrine secrete hormone and regulate body process
Achor
while pituitary gland is an example of endocrine system and it's found in the Brain
Achor
what's biology?
Egbodo Reply
Biology is the study of living organisms, divided into many specialized field that cover their morphology, physiology,anatomy, behaviour,origin and distribution.
Lisah
biology is the study of life.
Alfreda
Biology is the study of how living organisms live and survive in a specific environment
Sifune
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Source:  OpenStax, Natural sciences grade 4. OpenStax CNX. Sep 18, 2009 Download for free at http://cnx.org/content/col11096/1.1
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