Sunday, June 28, 2009
Thursday, June 25, 2009
WAJA SCIENCE PROGRAM 2009
Tuesday, June 23, 2009
WAJA SCIENCE PROGRAM 2008
Sunday, June 21, 2009
THE MOON
Saturday, June 20, 2009
SCIENCE SECTION B GUIDE
1. OBSERVING 2. INFERENCING 3. PREDECTING 4. INTERPRETING DATA 5. VARIABLE 6. HYPOTHESIS CRITERIA IN SECTION B
1. OBSERVATION 2. INFERENCE 3. PREDICTING 4. TREND 5. RELATIONSHIP 6. CONCLUSION 7. MANIPULATED VARIABLE (WHAT TO CHANGE) 8. RESPONDING VARIABLE (WHAT TO MEASURE) 9. CONTROLLED VARIABLE (KEPT TO SAME) 10. AIM 11. HYPOTHESIS Question 1 The picture shows a torchlight .The table shows the ability of the torch light using three batteries to function at different times. Time(hours)......Brightness of the bulb in torch light 2.......................Brightest 4.......................Bright 6.......................Dim 1. Based on the experiment, state the following variables: What to change/ manipulated :………………………………………………………. What to measure/ responding :…………………………………………………………. Kept the same/ controlled : …………………………………………………………. 2. What is the aim of the investigation? …………………………………………………………………………………………………… 3. Suggest one hypothesis based on the table. ………………………………………………………………………………………………………… 4. What is your observation about the brightness of the bulb for two hours? ………………………………………………………………………………………………………… 5 . State your inference based on your observation. ………………………………………………………………………………………………………… 6. What is your conclusion based on the table? ……………………………………………………………………………………………………… ……………………………………………………………………………………………………… Suggested Answers 1. Based on the experiment, state the following variables: What to change/ manipulated : time What to measure/ responding : Brightness of the bulb in torch light Kept the same/ controlled : type of battery, number of battery
6. The more the time the more the brightest of the bulb in torch light / if the time increase then the brightest of the bulb in torch light decrease.
Source: SK Sayung, Kuala Kangsar.
Thursday, June 18, 2009
PLANET PLUTO
PLANET URANUS
PLANET NEPTUNE
PLANET SATURN
PLANET JUPITER
PLANET MARS
PLANET EARTH
PLANET VENUS
YEAR 5 DOWNLOADS
PLANET MERCURY
THE SUN
Wednesday, June 17, 2009
EXTINCT ANIMALS
Passenger Pigeon
The earliest settlers in the New World were amazed by the passenger pigeon, a bird with flocks so huge that it would take days for them to travel overhead, blackening the sky as they passed. Any farmer who had the misfortune of hosting passenger pigeons for a meal would quickly find his entire crop decimated within the blink of an eye. Then, virtually overnight, the most abundant bird in North America suddenly disappeared from the planet. The extinction of the passenger pigeon is an example of nature coming into direct conflict with man. Its population numbered an astounding 3 to 5 billion when the first Europeans arrived in America. However, there was not room enough in the New World for both species. Passenger pigeons were soon wiped out due to merciless hunting, deforestation and other factors related to humankind's ever-expanding range. The extinction was only becoming apparent at the start of the 20th century; by 1914, the last known bird was dead.
Archaeopteryx
Saber-Toothed Cat
Of all the cute, cuddly animals found in the fossil record, the saber-toothed cat (also called the saber-toothed tiger) is one of the last you would want to meet in a dark alley. With their daggerlike canine teeth and powerful bodies, this animal was one of the most ferocious predators of the Cenozoic Period. It lived in North America and Europe and went extinct about 10,000 years ago. There have been several thousand saber-toothed cat specimens found at the famous La Brea Tar Pits in Los Angeles, Calif. – so many that it was named the state fossil of California.
So, what were these big beasts like in the wild? Evidence suggests that the saber-toothed cat had a social structure much like modern lions, living together and cooperating in order to bring down prey.
Interestingly, researchers also believe that a certain amount of nurturing went on in a saber-toothed cat pack. Many individual fossils show signs of extensive regeneration and healing after disease and injury, suggesting an environment in which individuals could be cared for by other members of the group. Despite their terrifying appearance, it seems these animals had a soft side.
Friday, June 12, 2009
Endangered Fish
Endangered Birds
California condors are large vultures with bald pink heads and a 10-foot wingspan. They are among the world's largest flying birds, and they are also one of the most critically endangered. After going extinct in the wild due to hunting, habitat loss and environmental poisons, captive breeding programs have allowed for the reintroduction of a small population of California condors into the wild. There are currently populations in California, Arizona, and Baja California, Mexico. IUCN Status: Critically Endangered USFWS Status: Endangered Major Threats: Hunting, habitat loss and environmental poisons Habitat: Wooded mountains and scrublands Location: California, Arizona, and Baja California, Mexico Diet: Carrion, especially larger animals like deer, cattle and sheep CROWNED EAGLE (Harpyhaliaetus coronatus)
YELLOW-EARED PARROT (Ognorhynchus icterotis)
The yellow-eared parrot is critically endangered because of its extremely small range and shrinking habitat due to deforestation. It is bright green with yellow ear patches and a dark, heavy bill. This breathtakingly beautiful bird is also a popular species in the exotic pet trade. It is currently only thought to occur among the wax palms in the cloud forests of the Colombian Andes.
Endangered Reptiles
The bog turtle is a small reptile species that is native to the eastern United States. It has a dark body with bright yellow-orange spots on either side of its head and neck. The carapace (shell) is domed and elongated, and has distinct rings on the shell plates. It has a fragmented range along the eastern seaboard in bogs and other moist habitats with dense vegetation. The main threat to this species comes from the draining of wetland ecosystems. IUCN Status: Endangered Major Threats:Draining of wetland ecosystems Habitat: Bogs, marshes, swamps, fens and wet meadows Location: Fragmented range in eastern United States
GREEN SEA TURTLE (Chelonia mydas) Weighing between 300 and 350 pounds, the green sea turtle is the largest of the world's sea turtles. They occur globally in tropical and subtropical waters, and females nest on the beaches of at least 80 countries. The green sea turtle is threatened worldwide by overexploitation of eggs and adults. They are also often taken as bycatch in fishing operations and threatened in some parts of their range by a disease that causes tumors. IUCN Status: Endangered USFWS Status: Endangered Major Threats: Overexploitation of eggs and adults; incidental capture in fishing gear Habitat: Warm, open tropical and subtropical ocean Location: Pacific, Atlantic and Indian oceans Diet: Algae and sea grass KOMODO DRAGON (Varanus komodoensis) The Komodo dragon is the world's heaviest lizard, weighing 150 pounds or more. It has gray scaly skin, a pointed snout, powerful limbs and a muscular tail. It lives in the scrub and woodland of a few Indonesian islands. They use their keen sense of smell to locate decaying animal remains from several miles away. They also hunt other lizards as well as large mammals and are sometimes cannibalistic. This species is threatened by hunting, loss of prey species and habitat loss. IUCN Status: Vulnerable USFWS Status: Endangered Major Threats: Habitat loss, loss of prey species and poaching Habitat: Open grassland, tropical savanna, tropical forest and scrub Location: Lesser Sundu archipelago of Indonesia Diet: Mainly carrion; also attacks large live preyLEATHERBACK SEA TURTLE (Dermochelys coriacea)
Weighing up to about 1,700 pounds, the leatherback sea turtle is by far the largest sea turtle. It is also the world's deepest diving, most migratory and wide-ranging of all sea turtles. The leatherback differs from other sea turtles in that it has a leathery shell and flippers without claws. It is known to travel great distances, with some tagged individuals spanning entire oceans. The leatherback sea turtle is threatened throughout its range by nest-site disturbance, fishing operations, pollution and egg collection. IUCN Status: Critically Endangered USFWS Status: Endangered Major Threats: Nest-site disturbance, fishing operations, pollution and egg collection Habitat: Warm, open ocean Location: Worldwide tropical oceans Diet: Mainly jellyfish, small crustaceans and fish SIAMESE CROCODILE (Crocodylus siamensis) The Siamese crocodile is a Southeast Asian reptile that lives in slow-moving freshwater habitats such as rivers, swamps and streams. It has a broad snout, powerful tail and grows to a length of about 12 feet. Populations of Siamese crocodile are rapidly decreasing due to hunting and loss of habitat. IUCN Status: Critically Endangered USFWS Status: Endangered Major Threats: Conversion of habitat to agricultural land and poaching Habitat: Swamps and the sheltered parts of rivers, streams and lakes Location: Borneo, Indonesia, Laos, Malaysia, Myanmar, Thailand and Vietnam Diet: Mainly fish; also amphibians, reptiles and possibly small mammals