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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

the diagram of the digestive system
Assiatu Reply
How does twins formed
William Reply
They formed in two ways first when one sperm and one egg are splited by mitosis or two sperm and two eggs join together
Oluwatobi
what is genetics
Josephine Reply
Genetics is the study of heredity
Misack
how does twins formed?
Misack
What is manual
Hassan Reply
discuss biological phenomenon and provide pieces of evidence to show that it was responsible for the formation of eukaryotic organelles
Joseph Reply
what is biology
Yousuf Reply
the study of living organisms and their interactions with one another and their environments
AI-Robot
the study of living organisms and their interactions with one another and their environment.
Wine
discuss the biological phenomenon and provide pieces of evidence to show that it was responsible for the formation of eukaryotic organelles in an essay form
Joseph Reply
what is the blood cells
Shaker Reply
list any five characteristics of the blood cells
Shaker
lack electricity and its more savely than electronic microscope because its naturally by using of light
Abdullahi Reply
advantage of electronic microscope is easily and clearly while disadvantage is dangerous because its electronic. advantage of light microscope is savely and naturally by sun while disadvantage is not easily,means its not sharp and not clear
Abdullahi
cell theory state that every organisms composed of one or more cell,cell is the basic unit of life
Abdullahi
is like gone fail us
DENG
cells is the basic structure and functions of all living things
Ramadan
What is classification
ISCONT Reply
is organisms that are similar into groups called tara
Yamosa
in what situation (s) would be the use of a scanning electron microscope be ideal and why?
Kenna Reply
A scanning electron microscope (SEM) is ideal for situations requiring high-resolution imaging of surfaces. It is commonly used in materials science, biology, and geology to examine the topography and composition of samples at a nanoscale level. SEM is particularly useful for studying fine details,
Hilary
cell is the building block of life.
Condoleezza Reply
what is cell divisoin?
Aron Reply
Diversity of living thing
ISCONT
what is cell division
Aron Reply
Cell division is the process by which a single cell divides into two or more daughter cells. It is a fundamental process in all living organisms and is essential for growth, development, and reproduction. Cell division can occur through either mitosis or meiosis.
AI-Robot
What is life?
Allison Reply
life is defined as any system capable of performing functions such as eating, metabolizing,excreting,breathing,moving,Growing,reproducing,and responding to external stimuli.
Mohamed
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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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