SMK Datuk Menteri SAINS PMR
Tuesday 16 October 2012
Program Selepas PMR Sains
Panitia Sains Menengah Rendah akan mengadakan Program yang menarik pada sesi 2012. Program berINOVASI dan Rekacipta berdasrkan konsep FIZIK. Pergerakan udara dan daya. Membina model kapalterbang dari polisterin serta pertunjukan udara di Padang SMK Datuk Menteri berdasarkan model yang telah di bina. Segala bahan akan disedikana oleh pihak Sekolah, Panitia Sains, E-Learning for life, Panitia Seni Panitia matematik dan Guru. Program ini hanya untuk pelajar Tingkatan 3. Tarikh : 29.10.12 Masa 1 : 8.00 - 10.00 pg persembahan penerbagan RC Jet depron/polisterin. masa 2 : 10.45- 1.00 ptg merekacipta Jet depron/polisterin.
Friday 27 January 2012
Donors and Recipients Blood/ Penderma dan Penerima Darah
1.Human blood can be divided into four groups, which is O, A, B and AB 2.Blood donation is a process that a donor voluntarily has the blood drawn for storage in a blood bank for subsequent use.
Thursday 26 January 2012
Sunday 14 August 2011
The Sun / Matahari / Seng nGey nGey
The Sun
The Sun is the largest object and contains approximately 99.8% of the total of the mass of the Solar System.
Characteristics of the Sun
Age : 4.5 billion years
Shape : Spherical
Diameter : 1 390 000 km
Mass : 1.989 x 1034 kg
Mean density : 1.410 gm/cm^3
Gravity : 28 x gravity on Earth
Mean surface temperature : 6 000°C
Principal chemistry
Hydrogen : 70 %
Helium : 28%
All others : 2%
Structure of the Sun
The Sun atmosphere has several layers
Photosphere
The photosphere is the compact layer of gas seen to be shining with yellow light from earth
This layer is responsible for radiating heat and light from the Sun
It temperature is approximately 6 000°C
Chromosphere
The chromosphere is an irregular layer lies above the photosphere
It temperature rises from 10 000 °C and 500 000°C
It reddish can be seen during a total solar eclipse
Corona
The corona is the outer layer of the Sun
It extends far out into space and is very hot
It temperature is about 1.5 million °C
Phenomena on the Sun’s surface and their effects
Sunspots
Sunspots is a dark and cool regions that appear on the photosphere
Prominences
Prominences are huge clouds of gases which rise from chromosphere
It can last two to three months
It can extend approximately 50 000 km above the sun’s surface
Solar flare
Solar flares are tremendous explosions on the surface of the Sun
Solar flares directly affect the ionosphere and radio communication on Earth
Refresh Refresh
The Sun warms our planet, provides the light to and also necessary for
life on earth
The Sun is 150 million km far away from Earth
Sunspots always appear in pairs
Prominences are usually associated with sunspots activity
Solar flares can cause electrical power outages and damaged
communication satellites
Aurora is the phenomenon that cause the sky near the poles to become
colorful
Solar wind is a constant flow of plasma expanding from the corona
The Milky Way
The Universe
The Universe contains all of the galaxies, stars and planets
The exact size of the Universe is unknown
The Milky Way
The Milky Way is the galaxy which is the home of our solar system
Our solar system is thus situated within the outer regions of this galaxy
The Milky Way contains about 200 billion stars
Galaxies /Galaksi
Galaxies
A galaxy is made of billions of stars, dust and gas all held together by gravity
Galaxies are scattered throughout the universe and they are vary in size
Galaxies can be classified according to their appearance and shape.
Spiral
Spiral galaxies usually is shaped like a disk that tends to
resemble a whirlpool or pinwheel
It contains a lot of dark dust clouds and young star cluster
Elliptical
Elliptical galaxies are actually of ellipsoidal shape
Normally, elliptical galaxies contain very little gas, dust and older stars
Irregular
Irregular galaxies has an undefined shape
It is full of dust, gas and young star
A galaxy is made of billions of stars, dust and gas all held together by gravity
Galaxies are scattered throughout the universe and they are vary in size
Galaxies can be classified according to their appearance and shape.
Spiral
Spiral galaxies usually is shaped like a disk that tends to
resemble a whirlpool or pinwheel
It contains a lot of dark dust clouds and young star cluster
Elliptical
Elliptical galaxies are actually of ellipsoidal shape
Normally, elliptical galaxies contain very little gas, dust and older stars
Irregular
Irregular galaxies has an undefined shape
It is full of dust, gas and young star
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