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WorksheetsG9 3rd Quarter Reviewer
Total questions: 50
Worksheet time: 28mins
Which statement correctly differentiates a mountain from a volcano?
Both mountains and volcanoes release lava
A mountain has a vent while a volcano does not
A volcano can erupt magma, while a mountain cannot
Mountains are formed by volcanic eruptions only
Which type of volcano has steep sides and is formed from alternating layers of lava and ash?
Shield volcano
Composite
Cinder cone
Caldera
A shield volcano is best described as _____.
Tall with very steep slopes
Explosive with thick lava
Broad with gentle slopes formed by flowing lava
Made mostly of ash and rocks
Which of the following volcanoes in the Philippines is considered active?
Mount Arayat
Mount Apo
Mount Mayon
Mount Makiling
Why are some volcanoes classified as inactive?
They have never erupted in history
They have erupted recently and may erupt again soon
They are permanently underwater
They have not erupted in recorded history and are unlikely to erupt again
hich eruption has gentle lava flows?
Plinian
Vulcanian
Strombolian
Hawaiian
What is magma?
Solid rocks on the surface of the Earth
Molten rock beneath the Earth’s surface
Lava that has already cooled
Ash released during volcanic eruptions
Which of the following best describes the composition of magma?
Pure molten metal
Water and ash
Only gases like carbon dioxide and water vapor
A mixture of molten rock, dissolved gases, and crystals
How does temperature affect the viscosity of magma?
Hot magma is thicker
Hot magma is more fluid
Temperature has no effect
Cold magma flows faster
How do the characteristics of magma influence the type of volcanic eruption?
Viscosity does not affect eruption type
Gas content only affects eruption type, not magma characteristics
Low-viscosity magma produces explosive eruptions, while high-viscosity magma produces gentle lava flows
High-viscosity magma produces explosive eruptions, while low-viscosity magma produces gentle lava flows
What type of volcano is considered a good source of geothermal energy?
Volcanoes with high, thick lava flows only
Active or recently active volcanoes with underground heat reservoirs
Dormant volcanoes with no magma underneath
Extinct volcanoes only
Which factor makes a volcano suitable for tapping geothermal energy?
Large amount of volcanic ash
Thick vegetation around the volcano
High elevation above sea level
Presence of hot magma close to the Earth’s surface
Which of the following volcanoes in the Philippines is not a source of geothermal energy?
Mount Macalinao
Mount Apo
Mount Arayat
Mount Cabalian
How is geothermal energy extracted from underground sources?
By drilling wells into hot rock reservoirs to bring steam or hot water to the surface
By collecting lava from volcanic eruptions
y placing solar panels on volcano slopes
By using wind turbines near volcanoes
What is the first step in a geothermal power plant to convert underground heat into electricity?
The hot water or steam is directed to turbines
Water is frozen into ice to store energy
Lava is melted further to increase temperature
Hot rocks are removed from the ground
Which diagram correctly shows the flow of geothermal energy from the source to the power plant?
Magma → Soil → Lava → Generator
Underground heat → Wells → Steam → Turbines → Generator → Electricity
Lava → Pipes → Water → Solar Panels → Electricity
Volcano → Ash → Heat → Turbine → Electricity
How can electricity from a geothermal power plant be used for human purposes?
To melt ice caps
Only to heat lava flows
Only to power volcano monitoring stations
To power homes, schools, hospitals, and factories
What is an advantage of using geothermal energy?
It produces electricity with very low greenhouse gas emissions
It requires large amounts of fuel like coal
It can only be used once and cannot be replenished
It is highly dependent on weather conditions
What is the disadvantage of using geothermal energy?
It can cause earthquakes and release harmful gases in some areas
It is always free and limitless
It does not require any maintenance
It produces more pollution than coal
The day-to-day weather conditions in a place
(a)
The average weather conditions in a place over a long period of time
(a)
Which factor is considered a major influence on the climate of a region?
Altitude, latitude, and ocean currents
The number of buildings in a city
Soil type only
Human population density
How does altitude affect the climate of an area?
Higher altitudes generally have cooler temperatures than lower altitudes
Higher altitudes always receive more rainfall than lowlands
Altitude has no effect on climate
owlands are always colder than highlands
Why does land topography influence climate?
Mountains can block wind and rainfall, creating rain shadows
Valleys always have cooler temperatures than mountains
Flatlands are always hotter than mountains
Land topography has no effect on temperature or rainfall
Which of the following is an example of a climatic phenomenon that occurs globally?
Monsoon in the Philippines only
Typhoon Yolanda
Global El Niño and La Niña events
Rainfall in Cebu city
What happens to the global mean temperature when carbon dioxide levels increase in the atmosphere?
Global means temperature decreases
Only oceans are affected
Temperature stays the same
Global means temperature rises, causing warming of the Earth
How does the greenhouse effect differ from global warming?
Both are the same process
Greenhouse effect occurs only in winter; global warming occurs only in summer
Global warming keeps Earth warm naturally; greenhouse effect causes temperature to rise unnaturally
reenhouse effect is a natural process that keeps Earth warm; global warming is the human-caused increase in Earth’s temperature
How do greenhouse gases contribute to climate change?
Cool Earth
Prevent rainfall
Affect volcanoes
Trap heat → warming & weather changes
La nina
Drought
Flood
Hottest color of star
(a)
Which star is closest to the Earth?
(a)
What is the name of the north star?
(a)
Which type of brightness is affected by the distance of the star?
Apparent Brightness
Absolute Brightness
Actual Brightness
Luminosity
Why do stars appear moving in the sky?
The Earth is rotating on its axis.
The universe is expanding.
The night sky is rotating.
New galaxies are formed.
Which constellation resembles a figure of a Lion?
(a)
Which constellation is represented by the mythical creature with Upper body of a human and Legs of a Horse?
Ursa Minor
Centaurus
Hylos
Draco
Which philosopher recorded half of the known constellations that can be seen from the earth?
Ptolemy
Copernicus
How many constellations can be seen from the earth?
12
44
48
88
Which constellation is known as ”twins” and is visible in the northern hemisphere from November through April?
Aquarius
Capricorn
Gemini
Leo
What is the term for a materials resistance to flow?
Density
Viscosity
Elasticity
Hardness
What can be inferred about the silica content and temperature of magma if it has a low viscosity?
A high silica content and high temperature
A high silica content and low temperature
A low silica content and high temperature
A low silica content and low temperature
Which of the following are major sources of greenhouse gases?
Rainfall and sunlight
Ocean currents and mountain ranges
Planting trees and farming vegetables
Burning fossil fuels, deforestation, and livestock farming
Which factor explains the cold weather in Baguio City?
Altitude
Latitude
Topography
Ocean currents
Where does geothermal energy came from?
Wind
Heat from the Earth
Rivers
Sunlight
What happens to the temperature of air as altitude increases?
Decreases
Increases
Remains the same
Varies
Why does magma with high silica content have higher viscosity?
Silica makes magma lighter
Silica reduces gas content in magma
Silica only affects the color, not viscosity
Silica increases resistance to flow, making magma thicker
Which of the following is a common method for harnessing geothermal energy?
Constructing dams
Building wind turbines
Drilling wells to access steam or hot water
Using solar panels
What is the main component of volcanic ash?
Solidified lava
Gases released during eruptions
Small fragments of rock and minerals
Water vapor
What is the primary benefit of using geothermal energy compared to fossil fuels?
It requires more land area
It produces more greenhouse gases
It is more expensive to harness
It is a renewable energy source
El nino
Drought
Flood
