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Natural sciences

Grade 4

Planet earth and the universe

Module 44

Weather forecasting


Talking about weather forecasting

[lo 1.1, 1.2, 1.3, 2.1, 3.1]

Where do weather forecasters get their information?

They get the information from weather satellites, weather balloons and earth stations. Metsat is the name of a weather satellite that orbits the earth.

A camera on Metsat is used for taking photographs of clouds and snow and it also shows approaching storms. The photographs can also be used to identify warm and cold areas of the earth.

Information is collected about the temperature, humidity (this is the moisture in the air), wind speeds and directions, the types of clouds, air pressure (atmospheric pressure) and rainfall. All the information is sent to a weather station where it is fed into a computer for processing.

After this has been done, a weather chart is drawn and sent to all the media (television, radio and newspapers).

Which one of you would like to present today’s weather to the class as it is presented on television?

Try to get hold of a newspaper that has a weather chart each day. Cut it out and study the key that indicates the different types of weather carefully.

Look at the following example:

Study the key and write down the correct names of the signs:

Draw a picture to show your favourite kind of weather.




Keep your own weather chart for one week. Draw the sun, raindrops or a cloud in the weather column, and fill in the wind speed and temperature.

DayWeatherWind speedTemperatureMondayTuesdayWednesdayThursdayFridaySaturdaySunday



The learner will be able to act confidently on curiosity about natural phenomena, and to investigate relationships and solve problems in scientific, technological and environmental contexts.

Assessment Standard

We know this when the learner

1.1 plans investigations;

1.2 leads investigations and collects data;

1.3 evaluates data and provides feedback on observations.

LEARNING OUTCOME 2 : CONSTRUCTING SCIENCE KNOWLEDGE The learner will know and be able to interpret and apply scientific, technological and environmental knowledge.

Assessment Standard

We know this when the learner

2.1 recalls significant information.

LEARNING OUTCOME 3 : SCIENCE, SOCIETY AND THE ENVIRONMENT The 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

3.1 understands science and technology in the context of history and personal knowledge.


Mr Brain Cell:

  • What is the correct name for someone who predicts the weather?Answer:
  • A meteorologist

Study the key and write down the correct names: see key on map.

Mr Brain Cell:

  • Find out what the following words mean:
  • High pressure
  • Low pressure
  • A front

High pressure: When a high-pressure system moves over the land, it normally means that it is going to be a fine day. Cold air moves out and down and becomes warmer.

Low pressure: A low-pressure system normally brings rain and cloudy conditions. Cold air moves in and up and becomes cold.

Front: We frequently see a front approaching the land. This is only the direction in which the cold or warm air moves.

Questions & Answers

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
Do somebody tell me a best nano engineering book for beginners?
s. Reply
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
is Bucky paper clear?
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Do you know which machine is used to that process?
how to fabricate graphene ink ?
for screen printed electrodes ?
What is lattice structure?
s. Reply
of graphene you mean?
or in general
in general
Graphene has a hexagonal structure
On having this app for quite a bit time, Haven't realised there's a chat room in it.
what is biological synthesis of nanoparticles
Sanket Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
many many of nanotubes
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I'm interested in nanotube
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
preparation of nanomaterial
Victor Reply
Yes, Nanotechnology has a very fast field of applications and their is always something new to do with it...
Himanshu Reply
good afternoon madam
what is system testing
what is the application of nanotechnology?
In this morden time nanotechnology used in many field . 1-Electronics-manufacturad IC ,RAM,MRAM,solar panel etc 2-Helth and Medical-Nanomedicine,Drug Dilivery for cancer treatment etc 3- Atomobile -MEMS, Coating on car etc. and may other field for details you can check at Google
anybody can imagine what will be happen after 100 years from now in nano tech world
after 100 year this will be not nanotechnology maybe this technology name will be change . maybe aftet 100 year . we work on electron lable practically about its properties and behaviour by the different instruments
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
how hard could it be to apply nanotechnology against viral infections such HIV or Ebola?
silver nanoparticles could handle the job?
not now but maybe in future only AgNP maybe any other nanomaterials
I'm interested in Nanotube
this technology will not going on for the long time , so I'm thinking about femtotechnology 10^-15
can nanotechnology change the direction of the face of the world
Prasenjit Reply
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit 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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