4. Why do people near a volcano need to evacuate before it erupts?
l. Hot lava can spew out in gentle streams or can erupt violently into the air.
ll. Death and serious injury to people and animals may result from burns and inhalation of hot ash and gases.
lll. After erupting from the volcano, hot lava will solidify instantly once an object gets in its way as it flows trapping anything
in its path.
IV. The extreme temperatures of rocks and gas inside pyroclastic flows can cause combustible material to burn.
A. I and II only
B. lll and I only
C. I,II and IV only
D. ll, lll and IV
5. Geothermal energy can be explained simply by its name, which derives from the Greek words “geo,” meaning Earth,
and “therme,” meaning heat. The heat is directly below the Earth’s surface, making it a universal resource. The most active
geothermal spots are found near fault lines and volcanoes but also occur where there are hot springs, geysers and
geothermal reservoirs. It can be harnessed cleanly and efficiently. How is geothermal energy tapped to convert heat to electricity for human use?
A. Wells are drilled. The turbine drives the electric generator. Steam turns the turbine. Power lines deliver electricity.
B. Steam turns the turbine. The turbine drives the electric generator. Power lines deliver electricity. Wells are drilled.
C. Wells are drilled. The turbine drives the electric generator. Wells are drilled. Steam turns the turbine.
D. Wells are drilled. Steam turns the turbine. The turbine drives the electric generator. Power lines deliver electricity.
6. Vicky’s mother is an OFW in Canada. Vicky lives in the Philippines but spends her vacation in Winnipeg, Canada from
April to May which is summer time in the Philippines. The temperature was 34°C when Vicky left Manila but when she arrived
in Winnipeg, it was 4°C. The weather in Manila is hot and humid while Winnipeg is cold and dry. How do you explain the
difference?
l. The Philippines is located in both the northern and eastern hemisphere while Canada is positioned in both the northern
and western hemisphere.
II. Manila’s latitude is 140 35′ N while Winnipeg’s is 49° 53′ N which means that Manila is much closer to the equator.
III. Manila is located on the eastern shore of Manila Bay while Winnipeg is found on the eastern edge of the Canadian
prairies.
lV. Canada is found in North America while the Philippines is in Asia.
A. I and II only Bill and Ill only
C. lll and I only D.land west for
7. Even in a neutral state, temperatures in the Pacific Ocean vary from east to west for example
‘warm pool’ in the tropical Pacific has some of the warmest large-scale ocean temperatures in the world. Which condition
does not distinctly describe an El Niño event?
A. It is an oscillation of the ocean-temperature system in the tropical Pacific having important consequences for weather
and climate around the globe.
B. The trade winds blow towards the west across the tropical Pacific. These winds pile up warm surface water in the west
Pacific, so that the sea surface is about 1/2 meter higher at Indonesia than at Ecuador.
C. The trade winds relax in the central and western Pacific leading to a depression of the thermocline in the eastern
Pacific, and an elevation of the thermocline in the west.
D. The easterly trade winds weaken. Rainfall follows the warm water eastward, with associated flooding in Peru and
drought in Indonesia and Australia.
8. How do you distinguish a La Niña episode from an El Niño episode?
A. La Niña is characterized by unusually cold ocean temperatures in the Equatorial Pacific, compared to El Niño whic
is characterized by unusually warm ocean temperatures in the Equatorial Pacific.
B. El Niño and La Niña are opposite phases of what is known as the El NiñoSouthern Oscillation (ENSO) cycle.
C. El Niño and La Niña episodes typically last nine to 12 months, but some prolonged events may last for years.
D. El Niño events are associated with a cooling of the central and eastern tropical Pacific, while La Niña events are
reverse, with a sustained warming of these same areas.
which allows the right amount of sunlight
9. Earth’s temperatures are stable because we are surrounded by
A. a cloud layer
B. An atmosphere
C. Gravity
D. Water
10. The layer of the atmosphere closest to Earth is called the:
A. troposphere B. stratosphere C. exosphere D. mesosphere
Answer:
4d
5.b
6.c
7.a
8.b
9.d
10.c
Explanation:
sorry kung mali
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