Science 9 Quarter 3 Review 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.

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

At depth in the Earth, nearly all magmas contain gas dissolved in liquid. When do the gases form into a separate vapor phase?

• When volume of gas is reduced as pressure increased

• When volume of gas expands as pressure is increased

• When pressure is decreased as magma rises toward the surface of the Earth

• When pressure is increased as magma rises toward the surface of the Earth

Which type of volcano ejects a basaltic magma?

• Cinder cone

• Composite

• Shield

• Stratovolcanoes

In magma formation, what should be the temperature and pressure requirements?

• High temperature and high pressure

• Low temperature and low pressure

• High temperature and low pressure

• High pressure and low temperature

Which gas from erupting volcano causes Global Warming?

• Carbon dioxide

• Sulfur dioxide

• Methane gas

• Hydrogen sulfide

During the eruption of a volcano, different dissolved gases and dust particles were released into the atmosphere. What might be the effect of these materials on the environment and on the living things?

• Global Warming

• Respiratory illness

• Disruption of aircraft travel

• All of the choices

Heat from the volcano can be utilized as energy source. Which energy comes from the volcano?

• Biomass

• Dendrothermal

• Geothermal

• Hydroelectric