Science 9 Periodical Exam

What is the natural opening in the Earth's surface where molten rocks and hot gases, smoke and ash are ejected?

• Blue hole

• cave

• falls

• volcano

How will you classify volcanoes with record of eruption?

• active

• eruptive

• inactive

• sensitive

What is the term that used to describe the reservoir of hot molten materials inside the volcano?

• Central Vent

• Flank Eruption

• Magma Chamber

• Summit Caldera

Which of the following volcanic eruptions is a stream-driven eruption as the hot rocks come in contact with water?

• Hydrothermal/Phreatic

• Phreatomagmatic

• Strombolian

• Vulcanian

What type of Power plant is used in tapping the heat flowing from inside the Earth as source of electricity?

• geothermal

• hydroelectric

• solar

• wind

What geothermal energy is used to produce steam to generate electricity?

• powerplants

• heat pump

• none of the above

• hydroelectric

What happens if the turbine generators are smaller and operate much longer?

• Less power loss

• Less sound is created

• Resulting work is reduced

• High power generation

Who produced the first geothermally generated electricity?

• Colter

• Faraday

• Grant

• Larderello

What refers to the atmospheric condition of a place over a long period of time?

• climate

• monsoon

• topography

• weather

What happens to the temperature of air when altitude increases?

• decreases

• increases

• remains the same

• varies