Q2W4 G8 Typhoon Dynamics converted


Quarter __2__ WORKSHEET NO. _4____ MELC: 111122222333344445 NAME: ____________________________________________ SCORE: _____________________ SECTION: ____________________________________________ DATE _____________________ SUBMITTED: BIG IDEA: Typhoon Dynamics A typhoon forms when the wind blows into areas of the ocean where the water is warm, about 26.5 C. These winds collect moisture and rise, while the colder air moves below. This creates pressure which forces the winds to move over quickly. As the winds spin around a center called the eye of the typhoon, clouds heavy with rain swirl around forming the eye wall where bands of rains and winds are at their strongest. Above the equator wind rotates counterclockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere, a phenomenon known as Coriolis Effect which causes wind to spiral as it rises. The low pressure near the ocean becomes a tropical depression and may eventually turn into a typhoon. A typhoon may weaken when it reaches an area of cool dry air, encounter a large land region or mountains; or move over an area of cool ocean water. The lifting effect of the center of a typhoon can cause the rising of sea level eventually penetrating the inland from the coastline. Arrange the following events that will show how a typhoon is formed A. Clouds form and wind spins as it rises due to the Coriolis Effect. B. Warm air rises towards the cooler upper atmosphere, cools off, condensing to water vapor to form clouds. C. Warm moist air meets cool air, leaving low pressure area below. D. Water evaporates from warm ocean waters. E. Air from the surrounding rushes toward the low-pressure area. Guide Questions: Write the letter of the correct answers 1. Storms are classified according to their geographic conditions. _______ are storms that occur over the Northwest Pacific Ocean. A. Cyclones B. Hurricanes C. Tornadoes D. Typhoon 2. Which of for the following is not necessary for a typhoon to develop? A. Converging winds B. High air pressure C. Differences in air pressure D. Continuous evaporation 3. When warm, moist air rises upwards from the ocean surface, it leaves a ____________ near the ocean surface. A. low pressure area B. high pressure area C. cloud formation D. dry cool air region4. 4. A region of mostly calm weather at the center of a typhoon, where air pressure is lowest. A. Eye wall B. Eye of a typhoon C. Bird’s eye view of a typhoon D. Rain band eye 5. Which of the following can weaken a typhoon? A. Area of cool, dry air B. Large land masses C. Cool Ocean waters D. All the above References: Exploring Life Through Science Series the New Grade 8; Phoenix Publishing 2016 Science 8 Learner’s Module; DepEd 2013

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