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Natural sciences

The earth and beyond

The stars

Educator section

Memorandum

1. Star: Heavenly body that emits light. Consists mainly of burning helium and hydrogen.

Planet: Lifeless heavenly body that gets light from the sun.

2. Look at page 2 in the module.

Leaner section

Content

EARLY MAN TRIED TO EXPLAIN THE MOVEMENT OF THE STARS AND PLANETS BY MEANS OF MYTHS AND LEGENDS. THE ANCIENT GREEKS TOOK A MORE SCIENTIFIC VIEW, BUT EVEN THEY BELIEVED MISTAKENLY THAT THE EARTH WAS AT THE CENTRE OF THE UNIVERSE.

FOR A FEW HUNDRED YEARS ONLY HAVE WE KNOWN THAT THE EARTH IS A VERY SMALL AND INSIGNIFICANT DOT? OUR SMALL PLANET ORBITS THE SUN, WHICH IN TURN IS MERELY ONE OF APPROXIMATELY 100 000 MILLION STARS IN OUR GALAXY AND WE NOW KNOW THAT THERE ARE AT LEAST 1 000 MILLION OTHER GALAXIES AS WELL.

Activity: to discuss the use of stars and planets with regard to the development of calendars [lo 2.1]

THE CHRISTIAN CALENDAR

  • This calendar uses the sun as the main means of keeping time. One year therefore measures 365¼ days - the exact duration of one of the earth's orbits of the sun. The beginning of the Christian calendar is the birth of Jesus Christ. The years preceding this event are referred to as before Christ or BC, and the years following it are spoken of as anno Domini (the year of the Lord) or AD.
  • This calendar is the most commonly used calendar throughout the world (also by non-Christians).

THE MUSLIM CALENDAR

  • People in the Muslim community use the moon to keep time. (The moon, being still and lifeless, has no light of its own but merely reflects the light of the sun. The moon therefore is not a star.)

THE JEWISH CALENDAR

  • Jews use a calendar that refers to the moon for counting the months and the sun for determining the length of the years. This calendar is dated from the time of the Biblical creation of the world.
  • Although the Jewish and Christian calendars use the sun to determine the length of a year, the dates of the Christian and Jewish New Year do not coincide.

THE CHINESE CALENDAR

  • The sun and the planet Jupiter are used by the Chinese to calculate time. Jupiter takes about 12 years to complete an orbit of the sun. The Chinese calendar is therefore based on a cycle of twelve years. Each year is named after an animal.
  • Each of the animals have particular characteristics, which, according to Chinese belief, are transferred to the people who are born in the particular year.

FIND OUT

1. Consult a dictionary or any other dependable source to find out what the difference between a planet and a star is.

Star: _________________________________________________
_________________________________________________
_________________________________________________
Planet: _________________________________________________
_________________________________________________
_________________________________________________

2. Explain how the calendars of Christian, Jewish, Muslim and Chinese people differ.

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

Assessment

Learning Outcome 2: The learner will know and be able to interpret and apply scientific, technological and environmental knowledge.

Assessment Standard 2.1: We know this when the learner recalls meaningful information.

Questions & Answers

how can chip be made from sand
Eke Reply
is this allso about nanoscale material
Almas
are nano particles real
Missy Reply
yeah
Joseph
Hello, if I study Physics teacher in bachelor, can I study Nanotechnology in master?
Lale Reply
no can't
Lohitha
where is the latest information on a no technology how can I find it
William
currently
William
where we get a research paper on Nano chemistry....?
Maira Reply
nanopartical of organic/inorganic / physical chemistry , pdf / thesis / review
Ali
what are the products of Nano chemistry?
Maira Reply
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
learn
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
learn
Google
da
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Bhagvanji
hey
Giriraj
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
Application of nanotechnology in medicine
has a lot of application modern world
Kamaluddeen
yes
narayan
what is variations in raman spectra for nanomaterials
Jyoti Reply
ya I also want to know the raman spectra
Bhagvanji
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
Nasa has use it in the 60's, copper as water purification in the moon travel.
Alexandre
nanocopper obvius
Alexandre
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
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
Hafiz
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
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Source:  OpenStax, Natural sciences grade 6. OpenStax CNX. Sep 16, 2009 Download for free at http://cnx.org/content/col11079/1.1
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