Skip to main content

Posts

Showing posts with the label science

Once in a red moon

Lunar eclipse makes memorable solstice (Photos below) AP photo A series of photos taken over an hour long period show the full moon as it is shadowed by the Earth as a total lunar eclipse marks the arrival of the winter solstice Tuesday, December 21, 2010 Skygazers with a clear view in North America and Europe were greeted with a celestial treat early Tuesday, as a unique total lunar eclipse turned the Moon pink, coppery or even a blood red. Click on the thumbnails below for more incredible images of the lunar eclipse. Coinciding eerily with the northern hemisphere's mid-winter solstice -- for the first time in almost four centuries -- the eclipse showed the Sun, the Earth and its satellite as they directly aligned, with the Moon swinging into the cone of shadow cast by its mother planet. Despite being in shadow, the Moon did not become invisible, as there was still residual light deflected towards it by our atmosphere. Most of this refracted light is in the red part of the spectru...

Buruj mudahkan pengenalan bintang di langit

Terdapat 88 sistem buruj di langit. Buruj sebenarnya adalah titik-titik bintang yang dikumpul dan dibahagikan serta diberikan nama-nama tertentu berdasarkan bentuk supaya mudah diingat. Ini merupakan cara sistem buruj mula terbentuk. Justeru, buruj ini sebenarnya bukanlah satu perkara yang benar. Ia sebenar adalah lambang khayalan ahli-ahli syair, petani dan juga astronomi lebih 6,000 tahun lalu. Tujuan sebenar penciptaan buruj ini adalah bagi membantu kita mengenal pasti jutaan bintang di langit. Semasa langit gelap, anda boleh melihat lebih kurang 1,000 hingga 1,500 bintang. Pasti sukar untuk kita mengenal pasti bintang yang mana satu. Malah sekali imbas, titik cahaya yang berkedipan di langit malam kelihatan sama sahaja. Oleh itu, beribu tahun dahulu, ahli astronomi awal telah membahagikan bintang mengikut kumpulan dan melukis gambar khayalan seperti kala jengking atau beruang, di sekeliling kumpulan bintang tersebut supaya mudah diingat. Bintang di dalam sesuatu buruj itu se...

Nota Sains Darjah 6 (2006)

Sistem suria meliputi bintang yang dipanggil Matahari serta sembilan planet iaitu Utarid, Zuhrah, Bumi, Marikh, Musytari, Zuhal, Uranus, Neptun dan Pluto. • Ada satelit semula jadi (bulan) seperti planet, komet, asteroid, meteoroid dan medium antara planet di dalam sistem suria berkenaan. • Sistem suria dipercayai terbentuk sekitar 4,600 juta tahun dulu hasil pengumpalan gas dan habuk di angkasa yang membentuk matahari dan planet lain. • Matahari sumber tenaga elektromagnet terbesar (kebanyakannya dalam bentuk haba dan cahaya). • Keseluruhan sistem suria, termasuk bintang-bintang tempatan, mengorbit pusat sebuah galaksi berlingkar mengandungi 200 bilion bintang yang dinamakan Bima Sakti. • Berhampiran galaksi Bima Sakti ada dua galaksi kecil yang boleh dicerap dari hemisfera selatan, iaitu Awan Magellan Besar dan Awan Magellan Kecil. • Galaksi besar yang paling hampir dengan Bima Sakti ialah Galaksi Andromeda yang juga berlingkar seperti Bima Sakti, tetapi ia empat kali leb...

What is swine flu?

What is swine flu? Swine flu is a respiratory disease normally found in pigs and caused by type A influenza viruses. While outbreaks of this type of flu are most common in pigs, human cases of swine flu do happen. In the past, reports of human swine flu have been rare—approximately one infection every one to two years in the United States. From December 2005 through February 2009, only 12 cases of human infection were documented. How is it spread? Humans with direct exposure to pigs are those most commonly infected with swine flu. Human-to-human spread of swine flu viruses have been documented; however, it's not known how easily the spread occurs. Just as the common flu is passed along, swine flu is thought to be spread by coughing, sneezing, or touching something that has the live virus on it. If infected, a person may be able to infect another person one day before symptoms develop; therefore, a person is able to pass the flu on before they know they are sick. Infected individua...

The mayonnaise jar

When things in your life seem , almost too much to handle, When 24 Hours in a day is not enough, Remember the mayonnaise jar and 2 cups of coffee. A professor stood before his philosophy class And had some items in front of him. When the class began, wordlessly, He picked up a very large and empty mayonnaise jar and proceeded to fill it with golf balls. He then asked the students, if the jar was full. They agreed that it was. The professor then picked up a box of pebbles and poured them into the jar. He shook the jar lightly. The pebbles rolled into the open Areas between the golf balls. He then asked the students again if the jar was full. They agreed it was. The professor next picked up a box of sand and poured it into the jar. Of course, the sand filled up everything else. He asked once more if the jar was full. The students responded with a unanimous 'yes.' The professor then produced two cups of coffee from under the table and poured the entire contents into the jar, effec...

NOTES: CHEMISTRY

SOURCE: http://cikgunaza.blogspot.com/2009/03/note-chemistry.html Form 4 Acid Meets Base Alkaline Aqueous Atom Conductive Concentration Of Solution Elements Isotopes Identified Kinetic Theory Of Matter Particles In Motion Periodic Table Of Elements The Enthalpy Of Change Form 5 Collision Theory IUPAC Rules Oxidation & Reduction Rate Of Reaction SPM Chemistry Term & Definition SOURCE: http://cikgunaza.blogspot.com/2009/03/note-chemistry.html

Biology Chapter 3 Researches

Biology Chapter 3 Researches: Movement of substances across the plasma membrane. Fluid Mosaic Model: Active Transport Passive Transport Active Transport Cell Membrane: Active Transport RBC in Hypotonic Solution RBC in Isotonic Solution RBC in Hypertonic Solution

Honey Bee

I want to share with you, how to identify natural honey and honey false. The following is the method taught by Abah; • Feeling honey is slightly sting (after drinking feel like I feel itchy at the throat). False honey taste is just sweet and only less sting. • Has the sting smell fragrant aroma (smell of natural honey is unique ... smell directly, mud up to the brain and so we fell quite dizzy) • has uniform natural honey color (same color to the policy of the bottle ... not banded, the other colors other colors below) • The original honey got a layer of foam at the top of the honey (the top surface of honey). How I check whether it is false to natural honey; • 1 - Enter the honey in metal spoon (½ tsp) • 2 - On a stick wax • 3 - Heat honey just above the candle flame ** If the bubbles are small, it is false honey! ** If the bubbles are big (like a volcano erupted), then it is natural honey!

BIOLOGY CHAPTER 2 NOTES

CHAPTER 2: CELL STRUCTURE ( DOWNLOAD NOTES ) - PDF FILE CHAPTER 3: MOVEMENT OF SUBSTANCES ACROSS THE PLASMA MEMBRANE 3.1 The Plasma Membrane 3.2 Passive Transport - Simple Diffusion 3.3 Passive Transport - Osmosis 3.4 Passive Transport - Facilitated Diffusion 3.5 Active Transport 3.6 Hypotonic Solution 3.7 Isotonic Solution 3.8 Hypertonic Solution SOURCE: http://www.scribd.com/doc/2332082/Cell-Structure3?secret_password=&autodown=pdf

SPM PHYSICS NOTES F4 and F5

SPM Physics Form 4 01 Base and Derive Quantities 02 Force and Motion 03 Force and Pressure 04 Heat 05 Light SPM Physics Form 5 01 Wave 02 Electricity 03 Electromagnetism 04 Electronic 05 Radioactivity Complete Formulae List (Highly recomended) Physics Formulae List - Form 4 Physics Formulae List - Form 5 Terms and Definition Physics Important Terms and Definition Mind Map 01 Force and Motion Linear Motion Graph of Motion Momentum Effect of Force Gravity Work, Energy and Power ( iPaper is a document format built for the Web. Virtually any document format is convertable to iPaper, which is embeddable into any website or blog. You need Flash Player to open an iPaper file. The file size may be a little too big for dial up internet connection.) SOURCE: http://www.one-school.net/notes/physics/spm_physics.html

Kiwi Fruit Facts...

Kiwi fruit is the edible fruit of Actinidia Deliciosa, and hybrids between this species and others in the genus Actinidia. Kiwifruits owe their name to a bird, native of New Zealand, named "kiwi", and actually in many regions of Europe, North America and South America, kiwi fruits are generally referred to as "kiwi" This fruit consists of a hairy, brown peel containing green flesh, with white pulp in the center, surrounded by black, edible seeds. The fruit has a sweet taste, similar to a mixture of banana, pineapple and strawberry. Kiwi fruits are native to China, where they were called "macaque peach" Nutrition-wise, kiwi fruits contain about as much potassium as bananas, and also contain 1.5 times the DRI for Vitamin C. It is also rich in Vitamins A and E, and its black seeds can be crushed to produce kiwi fruit oil, which is very rich in Alfa-Linoleic Acid (an important Omega-3 essential fatty acid) Sliced Kiwifruits Studies have proven that kiwifruits ...

CHEMISTRY: Avogadro Constant

CHEMISTRY SECTION: Avogadro constant is also called as Avogadro's number. It is also written as NA (normal N, with subscript A letter). It is used to represent the number of atoms in 12 grams of Carbon-12, chosen as the constant to measure number of atoms in other substance. Avogadro constant: 6.02 x 10^23 also called as Avogadro's number, or NA. 1 mol of any substance has 6.02 x 10^23 atoms in it. Calculations and many more, coming soon...

Cell components

cell membrane - the thin layer of protein and fat that surrounds the cell. ... centrosome - a small body located near the nucleus - it has a dense center and radiating tubules. This is where microtubules are made. During cell division (mitosis), the centrosome divides and the two parts move to opposite sides of the dividing cell. ... cytoplasm - the jellylike material outside the cell nucleus in which the organelles are located. ... Golgi body - (also called the Golgi apparatus or Golgi complex) a flattened, layered, sac-like organelle that looks like a stack of pancakes and is located near the nucleus. It produces the membranes that surround the lysosomes. The Golgi body packages proteins and carbohydrates into membrane-bound vesicles for "export" from the cell. ... lysosome - (also called cell vesicles) round organelles surrounded by a membrane and containing digestive enzymes. This is where the digestion of cell nutrients takes place. ... mitochondrion - spherical to ...

Periodic Table

Click on the image for a better view...

PERIODIC TABLE SOFTWARE

Periodic Table software. Does it it really exist? Yes, of course my dearest readers. ... Here, I add the link for the Periodic Table for those who take Chemistry. This sofware is really good. Have a look at it. Have a try and have a good result, okay? ... ... Download: Direct (recommanded) Mirror: Periodic Table


Free Educational Website For All