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Natural science

Grade 4

Life and way of living

Module 24

When water is dangerous

When might water be dangerous?

Use a red pencil crayon to circle examples of dangerous situations that involve water.


When might water be dangerous?

Discuss the dangers that are evident in the picture after the learners have completed the assignment.

  • When babies and toddlers bath in very hot water
  • When babies and toddlers are left in the bath without supervision.
  • Swimming pool dangers.
  • A river may be too shallow for diving without you knowing it, and may contain germs.
  • The water in a dam may be too shallow and contaminated (stagnant water).
  • There may be sharks in the sea, or currents that can lead to drowning.
  • Any spontaneous response form the class.

1. For cooking food, for cleaning and drinking

  • A pot of food the stove
  • Washing a fruit in running water
  • A child drinking water

2. For cultivating food

  • Maize plants growing
  • Fruit trees growing
  • Cabbages in the field

3. For transport and recreation

  • Yacht
  • Jet ski
  • Child angling

4. For cleaning

  • Father washing car
  • Washing dishes
  • Washing hands after going to the toilet

5. For plants and animals to live in

  • Ducks on a dam
  • Crocodile at the water
  • Dolphins swimming

6. For factories, industries and power stations

  • Industries
  • Power station
  • Factories

Questions & Answers

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.
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
How we are making nano material?
what is a peer
What is meant by 'nano scale'?
What is STMs full form?
scanning tunneling microscope
how nano science is used for hydrophobicity
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
what is differents between GO and RGO?
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
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
The nanotechnology is as new science, to scale nanometric
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
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
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
what school?
biomolecules are e building blocks of every organics and inorganic materials.
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
sciencedirect big data base
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
characteristics of micro business
for teaching engĺish at school how nano technology help us
How can I make nanorobot?
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Mueller Reply
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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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