Volcanoes Summative Exam

Which of the following BEST describes a volcano?

• It is a place within the mantle where rocks melt to generate magma.

• It is a long tube in the ground that connects the magma chamber to Earth’s surface.

• It is an opening in the Earth's mantle through which lava, volcanic ash, and gases escape.

• It is an opening on the surface of the Earth that allows material warmer than its surroundings to escape from its interior.

Which of the following statements about volcanoes is TRUE?

• Volcanic eruptions can be predicted.

• Volcanic eruptions are always violent.

• Volcanoes cannot be found in bodies of water.

• Volcanoes give us information about inner Earth.

Referring to the picture on the left, which part represents the magma chamber?

• 1

• 2

• 3

• 7

What part of the volcano is represented by Part 1?

• crater

• magma

• main vent

• magma chamber

Which of the following statements correctly describes Part 8 in Figure 1?

• It is cloud of ash formed by volcanic explosion

• It is a fast-moving current of hot gas and rock that is moving away from a volcano.

• It is a basin, circular in form, which can be large in radius and sometimes great in depth.

• It is a silicate rock that is hot enough to be in liquid form, expelled from a volcano, and reached the Earth’s surface during an eruption.

What type of volcanoes are formed from wide thin layers of lava?

• lava domes

• cinder cones

• shield volcanoes

• composite volcanoes

What type of volcano is Mayon Volcano which is formed from alternating layers of lava flow, undissolved stone and ash?

• lava domes

• cinder cones

• shield volcanoes

• composite volcanoes

Which of the following CORRECTLY describes the composition and formation of composite volcanoes?

• It has a highly viscous or thick, slow moving lava.

• It has a loose and fluid lava that flows over each other.

• It is composed of boulders and formed by the collision of oceanic plates.

• It is composed of loose fragments from basaltic lava and considered as the simplest type of volcano.

Volcanoes are classified as active or inactive. Which of the following is used to determine volcanic activity?

• materials they emit

• age of the volcanoes

• place where they are located

• historical record of eruption or volcanic activity

Mt. Akir-Akir, located in the Province of North Cotabato, has no record of activity for the last 10,000 years. Which of the following statements is CORRECT?

• It is an active volcano.

• It is an inactive volcano.

• It is a potentially active volcano.

• It is a destructive volcano.