Question 1

Granite is an example of what type of rock?

Accepted Answer

igneous

Answer

metamorphic

Answer

sedimentary

Answer

mineral

Question 2

The Earth consists of four subsystems, across whose boundaries matter and energy flow. Which of the following is not an example of an interaction between the hydrosphere and biosphere?

Accepted Answer

Water drank by people.

Answer

Landslide after heavy rains

Answer

Underground water stored in the soil.

Answer

Erosion of soil after the typhoon.

Question 3

What can you infer about graphite from the fact that you can scratch it with just your fingernail?

Accepted Answer

It's not very hard

Answer

It has fracture

Answer

It's not very lustrous

Answer

Its streak is black-colored

Question 4

What could be the reason why pearl can never be considered as a mineral even though it is a gemstone?

Accepted Answer

Because it’s a hard glistening object produced within the soft tissue of a shelled Mollusk.

Answer

Because during the dark ages, knights wore pearls into battle because they believed that the magic in pearls would keep them away from harm.

Answer

Because it measures 2.5-4.5 in the Mohs hardness scale.

Answer

Because it is composed of Calcium Carbonate in minute crystalline form, which has been deposited in concentric layers.

Question 5

Why is Earth unique?

C I. Earth is not located in the habitable zone.

II. There are different types of organisms on Earth.

III. Earth is the only known planet where life forms exist.

IV. The Earth's atmosphere is very conducive to life's existence.

Accepted Answer

II, III, and IV

Answer

I, II, and III

Answer

III and IV

Answer

I and II

Question 6

Which of the following best describes how erosion by groundwater might create a landform?

Accepted Answer

Acidic water dissolves rock to form a cave

Answer

Waves crashing against a shoreline

Answer

Stream slowly wears away rock and soil

Answer

Sediment building up to form a delta

Question 7

Mantle convection is the gradual creeping motion of Earth's solid silicate mantle generated by convection currents that transport heat from the planet's interior to the surface. How does convection occur in the mantle?

Accepted Answer

Molten rock is less dense due to its hot temperature resulting to the rising of the hot material and sinking of cooler rock establishing a circular motion.

Answer

An electric current flow in neighboring molecules to react.

Answer

Molten rock is denser due to its hot temperature resulting to the sinking of the hot material and rising of cooler rock establishing a circular motion that moves continent.

Answer

The hotter a material, the denser it becomes

Question 8

The subduction zone is the place where two lithospheric plates come together, one riding over the other. The primary subduction zones in the Philippines include the Manila Trench to the west and the Philippine Trench to the east. The East Luzon Trough is the northern extension of the Philippine Trench and dips west beneath Luzon. How is magma made at subduction?

Accepted Answer

increased pressure leads to melting at the subducting plates

Answer

increased temperature the leads to melting at the subducting plate

Answer

frictional heating as one plate slides over another

Answer

water released from the subducting plate lowers the melting point of the mantle

Question 9

Metamorphism is the process of transforming a pre-existing rock to another form of rock due to extreme heat, pressure, and chemical reaction. How do temperature and pressure affect metamorphism?

Accepted Answer

The deeper the rock depth, the higher the pressure and temperature.

Answer

Pressure and temperature increase as you go up to the crust.

Answer

Foliation happens as there is an increase in the pressure and temperature.

Answer

Magma cannot bake the surrounding rocks due to the difference in temperature.

Question 10

Metamorphic rocks were once igneous or sedimentary rocks but have been changed because of intense heat and/or pressure. Which of the following is correct?

Accepted Answer

When Sandstone is subjected to heat and pressure it can be transformed into Quartzite

Answer

The parent rock of Slate can be Limestone or Gneiss

Answer

The process where rocks undergo weathering, erosion and deposition is metamorphism

Answer

If heat and pressure is applied to Basalt can exist in the form of Bituminous coal

Question 11

Which of the following is NOT TRUE about plutonic rocks?

Accepted Answer

They are formed when lava cools and solidifies on the earth's surface

Answer

They solidify and cool slowly.

Answer

They have crystals that are large enough to see with the naked eye

Question 12

One of the natural processes that the Philippine Government focused on readiness and preparation is the movement of west valley fault. This 100-kilometer fault from the province of Bulacan, passed through the six cities in Metro Manila and goes to the provinces of Rizal, Cavite and Laguna in CALABARZON Region. How does this fault line was form?

Accepted Answer

Plates are moving past each other.

Answer

Plates are moving away each other.

Answer

Plates are moving towards each other.

Answer

Plates are moving above each other.

Question 13

Which statement is FALSE on how layers of rocks are formed?

Accepted Answer

Erosion and weathering on flat fields

Answer

Over hundreds of years, sediments bind together to form strata.

Answer

Volcanic eruptions

Answer

Gravity causes sediments to be deposited vertically.

Question 14

During the group discussion, a leader from group asked you what stratification is. Which is your best response in this situation?

Accepted Answer

Refers to the ways sediment layers are stacked to each other.

Answer

Deposition of sediments.

Answer

Natural process wherein materials is worn away from the Earth’s surface.

Answer

Rocks undergo change caused by heat and formed through time.

Question 15

What is the difference between relative and absolute dating?

Accepted Answer

Absolute dating is the technique that determines the exact age of a historical remaining while relative dating gives the order of age of several samples.

Answer

Absolute dating arranges the fossils in an order. while relative dating determines the numerical age

Answer

Absolute dating is the technique that gives the order of age of several samples while relative dating determines the exact age of a historical remaining.

Answer

Absolute dating compares the age while relative dating arranges the fossils in an order.

Question 16

The half-life of carbon-14 is known to be 5720 years. It is the most well-known and generally utilized kinds of radioactive isotope. For what reason do you suppose it is a decent component to use to date fossils and some rock?

Accepted Answer

Shorter half-life means more accurate age. B. The higher the percentage the older the rock.

Answer

The parent isotopes remain after ten half-lives

Answer

After another 5720 years, half of that decays.

Answer

The higher the percentage the older the rock.

Question 17

The following descriptions are true about Geologic Time Scale EXCEPT?

Accepted Answer

The geologic time scale is divided into geography, weathering, and evolution.

Answer

The geologic time scale was developed after scientists observed changes in the fossils going from oldest to youngest sedimentary rocks.

Answer

Scientists used absolute dating to determine the actual number of years ago that events happened.

Answer

Scientists use the geologic time scale to illustrate the order in which events on Earth have happened.

Question 18

Which of the following statement is correct about Geologic Time Scale?

Accepted Answer

It is divided into major chunks of time called Eras. Eras may be further divided into smaller chunks called eons, and each eon is divided into periods.

Answer

It is divided into major chunks of time called periods. Periods may be further divided into smaller chunks called eras, and each era is divided into eons.

Answer

It is divided into major chunks of time called eras. Eras may be further divided into smaller chunks called period, and each period is divided into eons.

Answer

It is divided into major chunks of time called eons. Eons may be further divided into smaller chunks called eras, and each era is divided into periods.

Question 19

In 1991, Mt. Pinatubo erupted, the volcano slope turned into gray, vegetation was covered and destroyed. Along with that, roof of houses collapsed, killing people in Zambales. Flights were also cancelled. During the rainy season after the eruption, houses were buried, and bridges were destroyed. From these descriptions based on research, what are the volcanic hazards that occurred in the Mt. Pinatubo eruption in 1991?

I. Ashfall

II. Ballistic projectiles

III. Pyroclastic flow

IV. Lahars

I. Ashfall

II. Ballistic projectiles

III. Pyroclastic flow

IV. Lahars

Accepted Answer

I, III, IV

Answer

I, II, IV

Answer

I, II, III

Answer

I only

Question 20

Volcanic tremors and earthquakes were felt in Volcano island and in barangays of Agoncillo, Batangas. Ashfall was also present southwest of Taal. Based on the given situation, what are the signs of impending eruption of Taal volcano?

I. Volcanic tremors

II. Steaming activity

III. Volcanic quakes

IV. Increase in temperature

I. Volcanic tremors

II. Steaming activity

III. Volcanic quakes

IV. Increase in temperature

Accepted Answer

I, II, III

Answer

I, II, III, IV

Answer

I only

Answer

I, II

Question 21

Based on the map shown, which places are on high risk when it comes to risk of volcanic eruption?

I. Albay

II. Bataan

III. Camiguin

IV. Sulu

Accepted Answer

I, III, and IV

Answer

I and II

Answer

I, II, III and IV

Answer

I, II and III

Question 22

How does mining cause landslides?

Accepted Answer

They cause land areas to slide due to the vibrations from the blast

Answer

They cause land areas to have erosion of foundation and the collapse of bridges and seawalls

Answer

They weakened soil because of lack of plants

Answer

They damage the weathered materials which result to slope instability

Question 23

From the image below, which municipalities in Bulacan may experience high flooding?

Accepted Answer

Obando, Hagonoy, and Paombong

Answer

Pulilan, Malolos, and Bocaue

Answer

San Rafael, Meycauyan, and Bustos

Answer

Baliuag, San Miguel, and San Ildefonso

Question 24

What is described as an induced flow of seawater into freshwater aquifers primarily caused by groundwater development near the coast?

Accepted Answer

saltwater intrusion

Answer

submersion

Answer

storm surge

Answer

coastal erosion

Question 25

Waste reduction is anything that reduces waste by using less material in the first place. Who has a bad habit of reducing waste material?

Accepted Answer

Jeric who always uses disposable utensils when eating.

Answer

Anna who always brought eco-bag to the market.

Answer

Diego who always carry a reusable water bottle when going to the gym

Answer

Jenny who always uses glass containers for food storage at home.

Question 26

What era did the trilobites and cephalopods become dominant in the ocean particularly during the Cambrian and Ordovician?

Accepted Answer

Paleozoic Era

Answer

Cenozoic Era

Answer

Mesozoic Era

Answer

Proterozoic Era

Question 27

Some members of a species have a genetic change that causes them to survive in their environment. They have survived to reproduce and pass these genetic changes to their offspring. What best explains this situation?

Accepted Answer

Living things evolve through time.

Answer

All living organisms are made up of cells.

Answer

Living things interact with their environment to survive.

Answer

Different organisms must maintain different internal conditions.

Question 28

Why do animals exhibiting external fertilization produce many gametes?

Accepted Answer

To ensure better chance of fertilization.

Answer

Food is available in plenty in water.

Answer

Water promotes production of large number of gametes.

Answer

The animals are small and want to produce more offspring.

Question 29

While roaming around your grandfather’s farm, several animals caught your attention, there are hens with their chicks and a goat with its kids. Which statement best explained the process of reproduction of the two animals?

Accepted Answer

Goat’s offspring developed inside the mother’s womb while the chicks are developed outside the hen’s body.

Answer

Offspring of both animals receive nourishment from a placenta.

Answer

Goats are viviparous and fertilized internally while hens and oviparous and fertilized externally.

Answer

Both animals reproduce live offspring.

Question 30

Upon interviewing your mother for an assignment in Earth and Life Science, you found out that she stops menstruating for about nine months during her pregnancy of you. Which statement best explained the cessation of menstruation during pregnancy?

Accepted Answer

My mother doesn’t menstruate because her ovaries stop producing egg cell during pregnancy.

Answer

My mother doesn’t menstruate because she is in her menopausal age.

Answer

My mother doesn’t menstruate because her hormones are focused on the development of the embryo.

Answer

My mother doesn’t menstruate because most of her blood are shared with the embryo.

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