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Natural sciences

Grade 4

Planet earth and the universe

Module 41

The stars and planets

Activity:

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.

Assessment

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.

Memorandum

Mr Brain cell

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

Questions & Answers

what is variations in raman spectra for nanomaterials
Jyoti Reply
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.
Damian
yes that's correct
Professor
I think
Professor
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
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
Rafiq
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
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
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
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.
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 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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