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WorksheetsQ3-REVIEWER (SCIENCE 9)
Total questions: 40
Worksheet time: 20mins
What kind of volcano does this one fit into, given its structure?
cinder cone volcano
composite volcano
fissure volcano
shield volcano
Volcano X has no record of eruption for the last 15,000 years and is heavily weathered. Volcano Y has not erupted in 100 years, but it still has a magma supply and could erupt again. How are they classified?
X is active; Y is dormant.
X is dormant; Y is inactive.
X is inactive; Y is dormant.
X is active; Y is inactive.
A local government (LGU) plans to build a permanent evacuation center near a mountain. There is no written history of eruptions. However, carbon dating of ash layers at the base shows an eruption occurred 9,500 years ago. The mountain still has a clear, recognizable cone shape. How should this be categorized for LGU planning?
It is a Dormant Volcano; since it hasn't erupted in 9,500 years, it is safe.
It is a Potentially Active Volcano; it looks like a volcano but isn't a danger.
It is an Active Volcano; the LGU must treat it as a threat because it erupted within the last 10,000 years.
It is an Inactive Volcano; the LGU can build safely because there is no written history.
A local official decides to evacuate residents near Volcano A (Alert Level 1) but only monitors Volcano B (Alert Level 0). Is this reasonable?
No, both need immediate evacuation regardless of alert level.
Yes, Alert Level 1 requires readiness, while Level 0 requires only monitoring.
No, Level 0 is more dangerous than Level 1.
Yes, because Level 0 volcanoes never erupt.
Which type of volcanic eruption is characterized by steam-driven explosions that occur when groundwater is heated by magma?
Plinian
Strombolian
Phreatic
Hawaiian
Why is the Pacific Ring of Fire the site of most of the world's active volcanoes?
The water in the Pacific Ocean makes magma hotter.
It is located along the boundaries of several shifting tectonic plates.
It is the closest point on Earth to the Sun.
There are more mountains in that area than anywhere else.
What is released when a volcano erupts?
Molten rock, ash, and gases
Newly formed soil from weathered rocks
Underground water mixed with minerals
Pressure waves traveling through the Earth
Why can volcanic eruptions be dangerous to people living nearby
They make the soil too fertile for farming.
They cause the weather to become colder.
They change the shape of the land over many years.
They release hot materials and gases that can harm people and property.
How does gas inside magma affect a volcanic eruption?
It turns magma directly into solid rock
It removes ash from the eruption cloud
It cools the magma and stops the eruption
It increases pressure, helping push magma out of the volcano
Which action would best reduce the danger from this type of eruption?
Moving closer to the volcano for warmth
Collecting ash for soil samples immediately
Standing near windows to watch the eruption
Wearing masks and keeping doors and windows closed
Which towns are at the greatest risk of health problems from the eruption?
Towns closest to the lava flow because lava emits harmful gases.
Towns on higher elevations, as they are naturally more exposed to all
hazards.
Towns far from the volcano because lava and ash always travel long
distances.
Towns in the path of the ash cloud, due to inhalation hazards and air
quality issues.
Which locations can be good sources for placing a geothermal power plant?
Ocean, river, sea
Geyser, ocean, river
Geyser, hot spring, ocean
Geyser, hot spring, steam vents
Which geothermal technology pipes steam directly from the Earth to the turbine?
Binary power plant
Flash steam power plant
Dry steam power plant
Geothermal heat pump
A power plant that takes high-pressure hot water and converts it to steam is called a:
Binary power plants
Dry steam power plants
Geothermal heat pumps
Flash steam power plant
What is the correct definition of geothermal energy?
It is the heat energy present from outer space.
It is the heat energy present in the interior of the Earth.
It is the heat energy present on the surface of the Earth.
It is the heat energy present on the surface of the ocean.
hat is a potential environmental concern when drilling for geothermal energy?
Excessive oxygen release
Release of toxic gases from underground
Depletion of the ozone layer
Over-fertility of the soil
o all volcanoes serve as viable sources for geothermal energy?
Yes, every mountain is hot inside.
No, only active and dormant volcanoes usually have enough heat.
Yes, because all volcanoes are extinct.
No, only volcanoes in the ocean work.
What is the main difference between a geothermal power plant and a geothermal heat pump?
The geothermal power plant generates a smaller amount of electricity than
the geothermal heat pump.
The geothermal power plant and geothermal heat pumps generate the same amount of electricity.
The geothermal power plant generates electricity for households while a
geothermal heat pump can support the energy of residential areas or communities.
The geothermal power plant harvests the energy about ten to thirty
thousand feet below the earth’s surface while the geothermal heat pump extends at most a few hundred feet below the earth’s surface.
The Tongonan Geothermal Power Plant in Leyte and the Palimpinon field in Negros Oriental contribute significantly to the Philippines' energy grid. Which of the following best explains why these specific locations are scientifically ideal for geothermal power generation?
These provinces are surrounded by ocean water, which is used to cool the underground magma chambers.
These sites are situated within volcanic arcs where magma is relatively close to the Earth's surface, creating high-temperature reservoirs.
These areas are located in low-lying plains where the air pressure is high enough to turn turbines without steam.
The soil in these regions contains unique minerals that chemically react with rainwater to produce electricity.
Two cities are located at the same latitude near the ocean, but City Delta is at 40 meters above sea level, and City Echo is at 400 meters above sea level. Based on the effect of altitude on temperature, how would the climate of City Echo compare to City Delta?
City Echo will be colder.
City Echo will be warmer.
Both will be the same.
City Echo will be less predictable.
What causes this clockwise and counterclockwise direction of ocean currents?
Sun’s rays
Coriolis effect
Tyndall Effect
Greenhouse Effect
Why is it warmer near the Equator than at the Poles?
The Equator is 10 miles closer to the Sun.
Sunlight hits the Equator at a more direct angle.
There is no wind at the Equator.
The Poles have more water.
The Philippines' climate is best described as:
High temperature, high humidity
Low temperature, low humidity
Cold and dry
Seasonal snow and ice
As you move from 15°N latitude to 75°N latitude, what will happen to the intensity of solar radiation?
more intense solar radiation.
less intense solar radiation.
will remain the same.
will be unpredictable.
To test if metal rusts quickly, which site is best?
The leeward side (dry and warm).
The windward side (moist and humid).
A desert.
An indoor laboratory.
What is the local name for the Southwest Monsoon?
Amihan
Habagat
El Niño
La Niña
What natural process describes how certain gases in the atmosphere trap outgoing heat (Infrared Radiation) to maintain a stable, life-supporting temperature on Earth?
Global Warming
Greenhouse Effect
Climate Change
Ozone Depletion
What is a common effect of El Niño?
More rain in the Philippines.
Drier conditions and drought in the Philippines.
Cooler ocean waters in the East Pacific.
Increased snow in the tropics.
How does deforestation affect the atmosphere?
It increases CO2 because there are fewer trees to absorb it.
It decreases CO2.
It makes the air cleaner.
It increases the amount of oxygen.
La Niña usually results in:
Less rain and no storms.
Increased rainfall and more tropical cyclones in the Philippines.
Very hot and dry weather.
A permanent winter.
Why is planting mangroves better than concrete walls for coastal protection?
They produce heat.
Mangroves provide natural protection and support marine life.
They stop the tide from coming in forever.
Sea walls always collapse during typhoons.
Which farming technique helps with unpredictable rainfall?
Burning all crops.
Using drought-resistant crop varieties.
Planting only crops that need constant flooding.
Stopping farming entirely.
Resident X frequently buys pre-packaged meals in plastic containers, rarely eats plant-based proteins, and often throws away expired groceries. Resident Y shops for local seasonal produce, maintains a plant-rich diet, and composts or finishes all meals to ensure zero food waste. Which resident’s lifestyle is more sustainable in the context of mitigating global warming, and why?
Resident X, because using pre-packaged meals reduces the carbon emissions associated with home cooking and kitchen appliances.
Resident X, because avoiding seasonal produce means fewer local transport trips are needed throughout the year.
Resident Y, because a plant-rich diet and zero food waste completely eliminate the carbon footprint of the entire agricultural industry.
Resident Y, because plant-based diets typically have a lower carbon and water footprint than processed or meat-heavy diets, and preventing food waste reduces methane emissions from landfills.
The increase in global temperature over the last century is primarily linked to:
Volcanic eruptions
Changes in the Earth's orbit
Human activities like burning fossil fuels
Increased solar flares
What is the most sustainable long-term climate action for a coast?
Building a temporary fence.
Planting and maintaining mangrove forests.
Painting the sand white.
Using more streetlights.
Which factor affects why a very bright star can appear dim when seen from Earth?
the star’s color
the star’s composition
the star’s distance from Earth
the star’s surface temperature
Why does Polaris stay in one spot while other stars move?
It is glued to the sky.
It is located almost directly above the North Pole.
It is the only star that doesn't move in space.
It is inside a black hole.
Why do we see different constellations during the Summer than we do during the Winter?
Because the stars move.
Because of the Earth's revolution around the Sun.
Because of the Earth's rotation on its axis.
Because the Moon blocks different stars.
Stars appear to move from East to West across the sky during the night. This is because:
The stars are orbiting the Earth.
The Earth’s rotation on its axis
The Sun is pushing them.
The Sun’s apparent brightness compared to the stars
What is the scientific view on astrology?
It is a proven science like physics.
It has no scientific basis; stars follow physical laws that don't affect human luck.
It is 100% accurate for predicting the future.
Scientists use it to plan rocket launches.
