SCIENCE REVIEWER (3RD QUARTER)

The eruption of Taal Volcano in March 2022 was characterized by explosive emission of magma erupting through water. Which type of eruption is this?

• Phreatomagmatic

• Phreatic

• Plinian

• Strombolian

The Philippines has 23 known volcanoes and around 300 other volcanoes, either on the surface or underwater. Because of this, what is the current rank of the Philippines in terms of harnessing geothermal energy?

• 1st

• 2nd

• 3rd

• 4th

The characteristic of magma determines the type of explosion of a volcano. Which explains the effect of silica content of magma to the type of volcanic explosion?

• The more silica there is, the less explosive a volcano is.

• The higher the silica content, the more explosive it is.

• The silica content of magma has no effect on the type of volcanic explosion.

• The effect of the amount of silica on the type of volcanic cone is very negligible.

During the eruption of Bulusan Volcano in Sorsogon, molten rocks from underneath find their way out through the opening in the crust such as the volcano. Why does magma tends to rise toward the Earth's surface?

• Magma is a fluid.

• Silica is abundant in magma

• The rock is less dense when melted.

• The water in magma makes them float.

Why is it that not all countries can benefit from geothermal energy?

• not all countries have enough water

• not all countries have volcanic activity

• geothermal plants produce a lot of pollution

• very few countries can afford to build geothermal plants

Which of the following human activities contribute to the major increase of global warming?

• cutting of trees

• volcanic eruptions

• burning of fossil fuels

• illegal mining activities

This refers to the angular distance from the equator that greatly affects the climate and weather of an area. Which physical factor described the given statement?

• altitude

• elevation

• height

• altitude

This phenomenon generates impacts on ecosystem characterized by drought and causes unusual warming of the surface temperature of the Pacific. What meteorological activity is characterized by the statement that affects the worldwide?

• El Niño

• La Niña

• Tsunami

• Typhoon

Which of the following greenhouse gases contributes most to the increase of the temperature of Earth's atmosphere?

• Carbon dioxide

• Carbon monoxide

• Methane

• Nitrogen

This cluster of stars appear as a hunter with a belt and a sword that is considered as one of the most recognizable constellations In the night sky. What season is mostly visible in the Northern Hemisphere?

• Fall

• Spring

• Summer

• Winter