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The ______ River is known as the longest river.
Cagayan
The ______ River passes through Pangasinan and Benguet.
Agno
The ______ River is the second largest river and runs through several provinces including Nueva Ecija and Bulacan.
Pampanga
The Pampanga River is located in part of ______.
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The ______ River is famous for its extensive coverage and vital role in local communities.
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Most lakes in the Philippines are related to ______ and tectonic activity.
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Some smaller lakes occupy the craters of extinct ______.
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Laguna de Bay, Taal Lake, and Lake Lanao are notable for their size or ______ importance.
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Lake Danao in Leyte province is an example of a lake of ______ origin.
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Lake basins may develop through subsidence caused by tectonic or volcanic ______.
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Lake Lanao is located in the province of ______ in the Philippines.
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With a surface area of 340 km², Lake Lanao is the ______ lake in Mindanao.
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It is the second-largest lake in the ______.
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Lake Lanao is counted as one of the ______ ancient lakes in the world.
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Scholars have been advocating for Lake Lanao's inclusion in the ______ World Heritage.
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The Agusan River drains into ______ Bay in Butuan City.
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The headwaters of the Agusan River can be found in the ______ Valley mountains.
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The Agusan River is the ______ longest river in the Philippines.
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The Agusan River features the largest river ______ in the Philippines.
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Agusan River drains into the sea at ______ City.
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Lake Mainit is the fourth largest lake in the ______.
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The maximum depth of Lake Mainit reaches ______ meters.
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Lake Mainit is located in the northeastern section of ______.
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Lake Mainit is shared between the provinces of Surigao del Norte and ______.
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The surface area of Lake Mainit is ______ square kilometers.
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The image depicts a mountain classified as potentially active ______.
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In the foreground of the image, there is green ______ surrounding the mountain.
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The sky in the image is ______, indicating a clear day.
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The mountain is depicted with lighter vegetation in the ______.
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The image looks like a photograph of a potentially active ______.
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Their physical form since their last activity has been altered by agents of weathering and _____ with the formation of deep and long gullies.
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Inactive does not necessarily indicate the volcano will not _____ again.
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The formation of deep and long _____ is a result of weathering and erosion.
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Erosion can significantly alter the physical _____ of a volcano over time.
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Deep _____ can be observed on the slopes of some volcanoes, indicating past erosion.
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The risk of flash floods in the communities found near the recently dormant ______ is imminent.
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Experts feared that the weight of the water could breach the crater walls and flood the homes of up to ______ people.
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The small coastal town of ______ is located 25 miles from the volcano.
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The caldera collapsing poses a danger due to water pressure and a long-term increase in the water level of ______ per month.
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The communities in the vicinity of the volcano face challenges due to the danger of ______ floods.
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Among the lakes in the Philippines, ______ is located in Luzon.
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Taal Lake is situated in ______.
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Lake Lanao is located in ______ in the Philippines.
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The three prominent lakes in the Philippines are Laguna de Bay, Taal Lake, and ______.
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Taal Lake and Laguna de Bay are both located on the island of ______.
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Mt. Mayon is located in the province of ______.
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Mt. Bulusan is situated in ______.
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The ______ Province of Cagayan is home to a notable volcano.
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A white, smoky plume can be seen emerging from the top of Mt. ______.
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The island surrounding the volcano in Calayan Province is described as dark, green, and ______.
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Study Notes
Notable Rivers in the Philippines
- Cagayan River is the longest river in the Philippines.
- Agno River flows through the provinces of Pangasinan and Benguet.
- Pampanga River is the second-largest river, traversing Nueva Ecija, Bulacan, Tarlac, Quezon, and part of Pampanga.
Origin of Lakes in the Philippines
- Most lakes are formed due to volcanic and tectonic activities.
- Smaller lakes often occupy the craters of extinct volcanoes.
- Some lake basins result from subsidence from tectonic or volcanic activities.
- Lakes may form when drainage paths are blocked by landslides or lava flows.
Major Lakes
- Laguna de Bay is the largest lake in Luzon.
- Taal Lake is another significant lake located in Luzon.
- Lake Lanao, situated in Mindanao, is both the largest lake in Mindanao and the second-largest in the Philippines, covering an area of 340 km² (130 sq mi).
Lake Lanao
- Also called Ranao or Ranaw, it is recognized as one of the 15 ancient lakes in the world.
- Scholars advocate for its inclusion in the UNESCO World Heritage list.
Agusan River
- The third longest river in the Philippines and the largest river basin.
- Its headwaters originate in the Compostela Valley mountains, draining into Butuan Bay in Butuan City.
Lake Mainit
- Fourth largest lake in the Philippines with a surface area of 173.4 km² (66.95 sq mi).
- It is the deepest lake in the country, reaching a maximum depth of 223 meters (732 ft), located between Surigao del Norte and Agusan del Norte.
Volcanic Activity in the Philippines
- There are 27 classified potentially active volcanoes.
- Inactive volcanoes may still erupt in the future despite their current status.
- 353 volcanoes are classified as active, showing changes due to weathering and erosion.
Safety Concerns Near Volcanoes
- In 2006, lahar canyons posed flood risks around Mt. Pinatubo due to potential caldera collapse from increased water pressure.
- Communities near the volcano faced imminent flash floods, raising the danger for approximately 40,000 residents in Botolan.
Notable Active Volcanoes
- Mt. Mayon, located in Albay, is characterized by its symmetrical cone shape and is known for its frequent eruptions.
- Mt. Bulusan in Sorsogon features a lush summit and is an active volcano.
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Description
Test your knowledge on notable rivers in the Philippines, focusing on the Cagayan, Agno, and Pampanga rivers. Discover the unique characteristics and geographical significance of each river. Are you ready to explore these vital waterways?
