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Natural sciences

Grade 4

Planet earth and the universe

Module 41

The stars and planets


Collecting information about the stars and planets for building models of them and talking about them

[lo 1.2, 2.1]

We often hear the expression: “Wow, you’re a star!” This means that you have performed brilliantly. It is wonderful to be compared with a star that holds so much fascination for people; they shine and are very beautiful.

Stars occur in groups and people who looked at them in the past imagined that they represented something. People who live south of the Equator can easily identify what they call the Southern Cross on a clear evening. On a dark night the Milky Way galaxy can be seen very clearly. But how does a star come into being?

There is a lot of gas and there are many clouds of dust in the universe.

Sometimes these are drawn together and form bigger masses. As they increase in size, they become very hot - hotter than 1 000 000 degrees Celsius.

The gas Helium is formed and when this happens, an incredible amount of energy and light is released.

This mass of gas and dust now begins to sparkle as a star!

There are nine planets that orbit the sun. Their sizes differ, they take different numbers of days to orbit the sun and they are at different distances from the sun.

1. Find a book that deals with the planets in the library and do some research. Write the names of all the planets on triangular pieces of paper and attach each of them to a stick like a flag. Also make one of these for the Sun. Go to the schools playing field/s and stick the Sun flag into the ground. Now place the other planets around the Sun in their correct order, e.g. Mercury is the nearest to the Sun, etc.

2. Cut circles of paper and write the name of a planet on each one. Hang these below one another on a clothes hanger, in the correct order with the Sun at the top. Join them together with any suitable thread and hang them in the classroom.


LEARNING OUTCOME 1: SCIENTIFIC INVESTIGATIONSThe 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

  • leads investigations and collects data.

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.


Mr Brain cell

  • Find out what the word "planet" meansAnswer
  • Wanderer

Questions & Answers

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
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
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.
what is the actual application of fullerenes nowadays?
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.
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?
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
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
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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