Full transcript of “Grade 10 Science Q1 Ep3: Volcanoes”. Click a timestamp to open the video at that moment. Need another video? Use the YouTube transcript generator.
0:00 [Music] thank you [Music] to start today's episode These are the five Wonder tips for you to remember to keep your back neck and eyes a healthy while indulging in some screen time this is teacher Melvin's healthy tips for everyone number one sit properly so you are well
0:46 supported your back should be touching the chair back rest number two change your position regularly if you are watching for long periods take turns sitting on the couch chair or floor number three keep dim Lighting on in the room rather than no lighting strong or no lighting may lead to eye damage over time number four stretch use commercial breaks to change positions to get up and walk around and to do gentle stretches number five don't watch TV in bed as this often leads to neck and back ache there you are now ready to begin hello wondering Warriors it's me teacher
1:31 Melvin your companion to your Wonder science adventurous learn everything honor the sun because I hear it depend Navy Great Dane science is fun so buckle up and get ready to power your mind this is Wonder science last episode we explored the different areas in the Philippines that are prone or vulnerable to earthquakes using a political map specifically you learned that earthquakes are natural geological phenomena caused by the sudden and Rapid movement of large volume of Rock the violent shaking and destruction caused by earthquakes are the result of the rupture and slippage along fractures
2:16 of Earth's crust called faults can you still recall what happens when an earthquake starts awesome I commend you for your quick thinking remember the sudden release of energy from an earthquake sends out several different shaking movements or seismic waves well done Wonder Warriors I am impressed with your progress also last episode I asked you to post a famous landmark or tourist destination at your city or a region is known for let us see your post in Facebook using certified Wonder Traveler
3:02 thank you [Music] great you made it happen I knew you could do it this time let us check your assignment I am thrilled to see your earthquake preparedness plan posted in Facebook using hashtag Wonder ready [Music] wonderful sharing Wonder Warriors keep up the good attitude with that you deserve a remarkable badge to start today's lesson let's have a short game first kindly prepare the
3:49 following materials pencil and a piece of paper for this activity we need to pass through five levels in order to reach the Finish Line once we get there a treasure box awaits are you up for the challenge in order to reach the Finish Line help me reveal the mystery scrambled word we only have five seconds to guess it correctly write down your answer in a piece of paper are you ready Wonder Warriors let's evolve in level one what is the mystery word
4:36 you're on the right track the mystery word is Thunder level two what if the mystery word you must have been practicing the mystery word is Shield [Music] level three what is the mystery word [Music] you got it right the mystery word is composite foreign
5:25 word is inactive [Music] and for the final level what is the mystery word [Music] fantastic the mystery word is dormant [Music] excellent work wander Warriors we have reached the finish line these are the mystery words that we were able to reveal in the activity Cinder Shield composite inactives and dormant how many mystery words were you able to reveal
6:10 well done if you got all five you just earned your super badge Wonder Warriors never forget to take note of the important details in a piece of paper Remember by taking down notes you can easily remember our lesson and now kindly prepare the following materials a piece of paper pencil and yourself learning module now that you are all set take a look and study this figure what does the figure show this figure is a geophysical hazard map that shows the areas in the country that are at risk to volcanic eruptions as
6:55 mentioned previously in our last episode the Philippines lies within the Pacific Ring of Fire a region of subduction zone volcanism surrounding the Pacific Ocean this explains the distribution of most volcanoes in the Philippines volcanoes are generally described as mountains that emit a volcanic products like lava rocks ashes and gases from the interior of the earth through its vents when the tectonic plates move apart or diverge magma will ooze out from the cracks and features of the costs that are moving apart forming vents these will then lead to formation of new land masses volcanoes and Volcanic activities
7:40 on the other hand when the plates move towards each other or converge upon Collision the plate that sinks or subducts will melt in the mantle and where there is melting of the plates formation of volcanoes occurs in the Philippines volcanoes and Volcanic activities are classified and monitored by the Philippine Institute of volcanology and seismology or phivox vivox classifies volcanoes according to its eruptive history it can be active potentially active and inactive volcanoes that are currently erupting or are expected to erupt in the near future are called active volcanoes
8:26 volcanoes are not currently erupting but have erupted within recordable history and are expected to erupt again in the future are called potentially active or dormant volcanoes while volcanoes are considered as dead and are not expected to erupt in the future are called inactive or extinct volcanoes did you know that there are three major types of volcanoes based on their shapes and structure you heard me right let's explore them one by one the simplest most common type and has a characteristic of a cone shape is a cinder cone volcano this volcano can be as high as 100 to 400 meters which emits
9:12 a volcanic ash during eruption the second type is characterized by a tall conical Mountain composed of an alternating layer of lava flow which justifies its name a composite volcano also known as strata volcanoes it can be up to 100 to 3 500 meters high which emits both volcanic ash and lava during eruption the third type are huge gently sloped volcanoes that almost exclusively erupt basaltic lava and include some of the largest volcanoes in the world the shield of volcanoes they can be as high as 9 000 meters from the base which emit a lava during an eruption Wonder warriors did you know the 24
9:59 historically active volcanoes are distributed all over the Philippine archipelago as shown in this figure volcanoes are not present in some provinces areas with no presence of volcanoes have no risk to volcanic eruptions in the mapping of Philippine vulnerability to environmental disasters by the Manila Observatory and the department of environment and natural resources shows the provinces at risk to volcanic activities these are the top 10 provinces at risk to volcanic eruptions
10:45 and batanes [Music] you might wonder that camiguin Island ranked the highest risk that's because the land area of camiguin is so small such that a volcanic eruption can affect the whole province but don't be afraid to visit the island of come again known as the island born of fire it has seven volcanoes and several volcanic domes besides natural wonders and historical reaches come against uniqueness lies in its varied terrain pristine natural environment and rustic setting of course it is the home of our favorite pastel a Filipino soft bond with yemma filling and the sweet pebble-like fruit lanzones
11:31 Sulu on the other hand ranked the second because it has the most number of active and potentially active volcanoes take a look at this map can you name the active and potentially active volcanoes located in Luzon visayas and Mindanao active volcanoes include Mount Pinatubo Mount and Mount Mayon in Luzon mount kendallon in visayas volcano is one of the 24 active volcanoes listed by the Philippine Institute of volcanology and seismology located in Batangas a province 60
12:16 kilometers south of Manila the al-volcano and the area around it have become one of the most frequented vacation spots in southern Luzon although tal volcano is classified as an active volcano it hasn't erupted in 43 years or since 1977 but early this year the old volcano erupted in the afternoon of Sunday January 12 2020. the eruption was classified as periodic eruption by the Philippine Institute of volcanology and seismology which generated a plume of Ash around 100 meters high periodic eruption is a steam driven episode that occurs when water beneath the ground or on the surface is heated
13:02 by magma Lava Hot Rocks or new volcanic deposits during periodic eruptions no new magma is produced only fragments of pre-existing Solid Rock in the volcano are expelled on that same day the same driven series of blasts became a pito-magnetic corruption meaning that magma and water were violently and exclusively mixing Freedom magnetic explosions can send Ash and debris into the air volcanic earthquakes may be able to cause structural damage and the appearance of new features can damage roads and houses the next day Tao volcanoes creatic or
13:47 steam driven activity progress into magmatic eruption magnetic Corruptions involve the rise of magma to over the surface in the case of taal volcano the magnetic corruption is characterized by weak fountaining lava accompanied by Thunder and flashes of lightning if seismologists use director scale to measure earthquake strength volcanoes have a similar scale called the volcanic exclusivity index or vei this scale gives us a way to measure the relative explosiveness of volcanic eruptions it measures how much volcanic material is ejected the height of the material thrown into the atmosphere and how long
14:32 the eruption lasts the scale is logarithmic or based on 10 therefore an increase of one on the scale indicates an eruption 10 times powerful more than the number before it on the scale in the case of our eruption on January 12 2020 it has reached a vei of three to four due to the amount of volcanic material ejected and the height of the material thrown into the atmosphere Mount mayon's eruption in 2018 is around two to three while Mount Pinatubo eruption on 1991 remained the world's largest volcanic eruption to happen in the past 100 years with a volcanic exclusivity index of six
15:18 Wonder Warriors how are you so far don't forget to take note of the important details in your paper to easily remember our lesson so there you have just learned about the formation of volcanoes and Volcanic activities and now challenge yourself to do this five item quiz I will read the question and choices once you are only given five seconds to write the letter of the correct answer for each question you will be given one gold coin for every correct answer are you now ready Wonder Warriors let's play Science pop quiz [Applause]
16:04 question number one which type of volcano is characterized by a tall conical Mountain composed of an alternating layer of lava flow a cinder cone volcano B composite volcano C shield volcano or D torment volcanoes [Applause] the correct answer is letter B composite volcano question number two which of the following is a steam driven episode that occurs when water beneath the ground or on the surface is heated by magma a lava hot rocks or a new volcanic deposits
16:53 a periodic eruption B predomagnetic eruption C magmatic corruption or D lenient eruption the correct answer is letter A creatic corruption question number three Rich volcanic eruption is a result of magma and water violently and exclusively mixing a plenian eruption B creatic corruption C magnetic eruption or D predomagnetic corruption [Music]
17:39 the correct answer is letter D predomagnetic corruption question number four what province ranked the highest risk because of its small land area that a volcanic eruption can affect the whole place a Sulu B patanis C come again d camarines [Music] the correct answer is letter C come again [Music] question number five according to the Philippine Institute of volcanology and seismology how many historically active volcanoes are distributed all over the
18:25 Philippine archipelago a 21 B 22 C 23 or D 24. [Applause] [Music] the correct answer is letter d 24. very well done Wonder Waters I am happy that you were able to challenge yourself to do the Science pop quiz and now let us add all the gold coins you have collected from the Science pop quiz how many gold coins have you collected for all the effort that you do I will give you another fantastic badge as Wonder Warriors whether you live or
19:12 don't in a place where a volcano is present it is important that you are aware of the natural hazards such as volcanic Corruptions and why that is to prepare yourselves and demonstrate the ways to ensure preparedness when disasters happen remember the key to effective disaster prevention is planning for your assignment create a preparedness plan that we should do before during and after a volcanic eruption perform this activity with either family members or friends who are available to join you spread awareness and save lives using social media platforms share your volcanic eruption preparedness plan to the online world
19:59 and use hashtag Wonder ready you did well today Wonder Warriors I am excited to see all your outputs in our next episode and that ends our Wonder adventure for today but don't worry more science Adventures are coming your way always remember science is fun for everyone this has been your Warner Explorer teacher Melvin see you next time for another episode of fun Wonder Adventures only here at deputv [Music] thank you
20:44 [Music] thank you [Music] foreign [Music]
21:53 foreign [Music]
