Mechanics :• The first person to raise his/her hand after we say go will be the one who will answer the question.• If the person’s answer is right , he/she will get plus points for Science class.• If the person’s answer is wrong , we will call another student to answer the question.
1) How many islands does the Philippines have?Correct answer : 7,107 islands
2) What is the largest lake in the Philippines?Correct answer : LAGUNA DE BAY
3) What waterfall do we use for hydro-electric power?Correct Answer : Maria Cristina Falls
Philippine Bodies of Water• The north is bordered by the Babuyan Channel.• The west by the South China Sea• The south by the Celebes Sea.• The Philippines eastern coast faces the Pacific Ocean.
Philippine Bodies of Water• Inland lakes and rivers exist within the islands, formed through time by different geologic activities.
What is a bay?• a large body of water connected to an ocean or sea formed by an inlet of land due to the surrounding land blocking some waves and often reducing winds.
Example of a Bay in the Philippines :• Subic Bay is a bay forming part of Luzon Sea on the west coast of the island of Luzon in Zambales, Philippines, about 100 kilometers northwest of Manila Bay.
What is a river?• A river is a natural watercourse usually freshwater, flowing towards an ocean, a lake, a sea, or another river.• In few cases, a river simply flows into the ground or dries up completely before reaching another body of water.
Example of a River in the Philippines :• The Pasig River (called Ilog Pasig in Filipino) - is a river in the Philippines that connects Laguna de Bay to Manila Bay.
Example of a River in the Philippines :• Pampanga River (formerly known as Rio Grande de Pampanga) -is the second largest river in the island of Luzon, next to Cagayan River and the third largest but most important river in the Philippines. It is located in the Central Luzon region and traverses the provinces of Pampanga, Nueva Ecija, Bulacan, Tarlac and Quezon.
What is a waterfall?• A waterfall is a place where water flows over a vertical drop in the course of a stream or river.• Waterfalls also occur where meltwater drops over the edge of a tabular iceberg or ice shelf.
Example of a Waterfall in the Philippines :Maria Cristina Falls is a waterfall that canbe found in Iligan City. Sometimes calledthe "twin falls" as the flow is separated bya rock at the brink of the waterfall.
What is a sea?• A sea is a large body of saline water that may be connected with an ocean or may be a large saline lake that lacks a natural outlet.
Example of a Sea in the Philippines :Camotes Sea - is a small sea within the Philippinearchipelago, between the Eastern Visayas and theCentral Visayas. It is bordered by the islands ofLeyte to the north and east, Bohol to the south,and Cebu to the west.
What is a hot spring?• A hot spring is a spring that is produced by the emergence of geothermally heated groundwater from the Earths crust.
Example of a Hot Spring in the Philippines :The Tangub Hot Spring can be found in Camiguin.It is in the sea at normal water level. At low tide,the warm water comes out between the rocks.
What is a gulf?• A gulf is a body of water that is connected to a sea or ocean. There will be land partially surrounding the water, but it is larger than a bay. A gulf is often a long or large landlocked part of the sea that opens at a strait.
Example of a Gulf in the Philippines :Davao Gulf is a gulf found in Mindanao in thePhilippines. It has an area of 308,000 hectares.Davao Gulf cuts into the island of Mindanao fromPhilippine Sea. It is surrounded by all fourprovinces in the Davao Region.
What is a strait?• A strait is a narrow, typically navigable waterway that connects two larger, navigable bodies of water.
Example of a Strait in the Philippines :• San Juanico Strait is a narrow strait in the Philippines. It separates the islands of Samar and Leyte.
What is a stream?• A stream is a body of water with a current, confined within a bed and stream banks.• A stream is a body of running water moving to a lower level in a channel on land.
Example of a Stream in the Philippines :• Tandawan Stream is a stream in Davao, Philippines.
What is a lake?• A body of relatively still water of considerable size, localized in a basin, that is surrounded by land apart from a river, stream, or other form of moving water that serves to feed or drain the lake.
Example of a Lake in the Philippines :• Laguna de Bay - is the largest lake in the Philippines located east of Metro Manila between the provinces of Laguna to the south and Rizal to the north.
TAAL LAKETaal Lake is found in theprovince of Batangas, on theisland of Luzon in thePhilippines.
TAAL LAKE• Taal Lake was once just an arm of Balayan Bay.• However, after a series of major eruptions in the 18th century, Taal Lakes sole connection to the sea narrowed down into its sole draining river, the Pansipit River.
TAAL LAKE• Several centuries of precipitation have diluted the lakes once saline waters into freshwater.• Because the lake was until recently connected to the sea, it is home to many endemic species that have evolved and adapted to the desalination of the lakes waters.
Examples of species in Taal Lake : • Harengula Tawilisa freshwater sardine found exclusively in thePhilippines. It is unique in that it is the onlymember of the family Clupeidae that isknown to exist entirely in freshwater.
Examples of species in Taal Lake :• Mullets or Mugilidae are distinguished by the presence of two separate dorsal fins, small triangular mouths, and the absence of a lateral line organ.
TAAL LAKE• Taal Lake’s soil is Fine Sandy Loam.
TAAL LAKE• It is the deepest lake in the Philippines (172 m) and the third largest in area (234.2 km2).• It is a caldera lake, having been formed partly by the collapse of a large volcanic crater and partly by subsidence.