Grade 9 Science Long Quiz

What type of volcano is typically small, has steep sides and is built up by the accumulation of volcanic debris ejected during eruptions?

• Shield volcano

• Stratovolcano

• Cinder cone volcano

• Caldera volcano

Which of the following volcano in the Philippines has erupted recently?

• Apo in Davao

• Isarog in Camarines Sur

• Bud Datu in Sulu

• Mayon in Albay

Which type of volcanic eruption is characterized by tall eruption columns that reach up to 20km high with pyroclastic flow and ashfall tephra?

• Plinian eruption

• Phreatomagmatic eruption

• Vulcanian eruption

• Strombolian eruption

One way of classifying volcanoes is through their cones. Which of the following is classified as composite cone or stratovolcano?

• Mauna Loa in Hawaii

• Mayon Volcano

• both a and b

• Paricutin Volcano in Mexico

Which of the following is NOT a basis to the shape of volcano?

• composition of magma

• temperature of magma

• amount of gas

• silica content

The volcanic eruptions in the Ring of Fire are often characterized by explosive events. What type of volcanoes, known for their explosive eruptions, are common in this region?

• Shield volcanoes

• Stratovolcanoes (composite volcanoes)

• Cinder cones

• Lava plateaus

Imagine you are a geologist advising a government on urban planning in a volcanic-prone area. What specific recommendations would you provide to enhance the safety and resilience of the community?

• Describing the physical characteristics of volcanic rocks.

• Outlining the steps for monitoring volcanic activity.

• Developing strategies for disaster response and evacuation.

• Explaining the differences between shield and stratovolcanoes.

How do volcanic aerosols contribute to the cooling of the Earth's surface after an eruption?

• By trapping heat in the atmosphere

• By absorbing sunlight

• By promoting the greenhouse effect

• By reflecting sunlight back into space

Which of the following is responsible for monitoring and addressing volcanoes and earthquakes in the Philippines?

• PAG-ASA

• DOST

• PHIVOLCS

• DENR

Volcanic emissions contribute to the Earth's atmosphere. Which volcanic gas is considered a greenhouse gas?

• Oxygen

• Carbon dioxide

• Sulfur dioxide

• Nitrogen