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Natural sciences

Grade 4

Planet earth and the universe

Module 43

Talking about the weather

Activity:

Talking about the weather

[lo 1.3, 2.1]

One of the things that change most from day to day is the weather. The weather influences our decisions about where we would like to live, the clothes that we wear and the things that we do.

We always want to know what the weather will be like. We therefore regularly look at the weather forecasts on television, and listen to it on the radio and read about it in the newspapers.

Discuss this in your group and suggest some reasons for wanting to know what the weather will be like.

What is weather actually?

  • Warmth and sunlight travel through the earth’s atmosphere. The rays of the sun affect the air in four different ways: It changes the temperature, the humidity, the air pressure and the wind.

Write a sentence about each of these. Look at the pictures that illustrate them:

Temperature

Humidity

Air pressure

Wind

Try the following:

Make a flag and hang it outside to find out how strong the wind is.

Hang spoons from a metal clothes hanger using nylon to tie them and listen to the tinkling that tells you that the wind is blowing.

Assessment

LEARNING OUTCOME 1 : SCIENTIFIC INVESTIGATIONS 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

1.3 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.

Memorandum

  • Name a few reasons in your group why it might be useful to know in advance what the weather will be like.

Possible reasons

  • When you go out, you want to know whether it is necessary to take a coat or rain jacket, especially to sports and outdoor events
  • Farmers plan their daily chores according to the weather
  • In case of danger (e.g. hurricane or tornado) safety measures must already be in place
  • We want to know whether we can hang out our washing!

Temperature: The sun heats the earth. The heat is reflected off the clouds and the earth to determine the temperature of the air.

Humidity: Water vapour rises from the earth and sea to form clouds. When many water droplets accumulate, rain falls to the earth. Humidity is the moisture content of the air.

Pressure: Atmospheric pressure is determined by air that is forced in different directions.

Wind: Wind is air that moves rapidly.

Questions & Answers

what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
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
Daniel
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
Maciej
characteristics of micro business
Abigail
for teaching engĺish at school how nano technology help us
Anassong
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 ?
s.
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
Tarell
what is the actual application of fullerenes nowadays?
Damian
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
Tarell
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.
Virgil
is Bucky paper clear?
CYNTHIA
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.
Harper
Do you know which machine is used to that process?
s.
how to fabricate graphene ink ?
SUYASH Reply
for screen printed electrodes ?
SUYASH
What is lattice structure?
s. Reply
of graphene you mean?
Ebrahim
or in general
Ebrahim
in general
s.
Graphene has a hexagonal structure
tahir
On having this app for quite a bit time, Haven't realised there's a chat room in it.
Cied
what is biological synthesis of nanoparticles
Sanket Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
China
Cied
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
Porter
many many of nanotubes
Porter
what is the k.e before it land
Yasmin
what is the function of carbon nanotubes?
Cesar
I'm interested in nanotube
Uday
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
AMJAD
preparation of nanomaterial
Victor Reply
how to synthesize TiO2 nanoparticles by chemical methods
Zubear
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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