Grade 9 Earth Science

What term refers to the highest part of a volcano where the opening is located?

• Apex

• Peak

• Crest

• Volcano Mouth

Where is magma typically found within a volcano?

• Crater

• Vent

• Magma Chamber

• Summit

Which type of volcano is characterized by steep slopes, a wide crater, and is considered the simplest form of volcano?

• Composite volcano

• Stratovolcano

• Cinder cone volcano

• Shield volcano

What geological feature is formed when molten rock, hot gases, smoke, and ash are ejected from the Earth's surface?

• Plateau

• Canyon

• Fissure

• Volcano

What type of volcanic eruption occurred when Taal volcano spewed large columns of ash due to water contacting magma?

• Phreatomagmatic

• Vulcanian

• Phreatic

• Plinian

Which volcanic eruption type is distinguished by a lava fountain?

• Phreatic

• Vulcanian

• Plinian

• Strombolian

Among the listed volcanic hazards, which one can cause respiratory illnesses when inhaled?

• Pyroclastic Flow

• Lava

• Lahar

• Volcanic Ashes

Which phenomenon is characterized by abnormal warming in the Eastern Pacific Ocean causing severe droughts?

• La Niña

• El Niño

• La Niño

• El Niña

What factor mainly influences the explosiveness of a volcanic eruption?

• Pressure

• Temperature

• Amount of gases

• Silica Content

Which celestial body is known as the "North Star"?

• Rigel

• Polaris

• Sirius

• Sun