Question 1

How does magnetic stripes on the seafloor provide evidence of seafloor spreading?

Accepted Answer

Rocks found far from the ridge are younger compared to those found near it suggesting formation at different times.

Answer

The magnetic polarity of the old and young rocks found on the ocean floor are the same.

Answer

Rocks of the same age found on the seafloor with different magnetic polarity.

Answer

Rocks found in different areas from the oceanic ridge show different polarities at different times.

Question 2

Which of the following states the Plate Tectonics Theory?

Accepted Answer

It states that the plates are moving due to the energy from the mantle.

Answer

It explains the similarities of countries in terms of rock components.

Answer

It states that the lithosphere is divided into slabs called plates which float and gradually move.

Answer

It states that the lithosphere is composed of a crust and an upper mantle.

Question 3

Which explains the presence of volcanoes in Luzon, Visayas, and Mindanao?

Accepted Answer

The plate where the Philippine sits is colliding with the surrounding plates.

Answer

The Philippines is a hot spot.

Answer

The volcanoes are forming because the Philippines is part of the Pacific Ring of Fire.

Answer

Luzon, Visayas, and Mindanao are gradually moving, forming volcanoes.

Question 4

Which boundary can produce a MASSIVE earthquake once they move?

Accepted Answer

Transform Boundary

Answer

Convergent Boundary

Answer

Divergent Boundary

Answer

Earthquake Boundary

Question 5

Where are most of the active volcanoes found?

Accepted Answer

along the convergent oceanic-continental plate boundaries

Answer

along the divergent plate boundaries

Answer

along the convergent oceanic-oceanic plate boundaries

Answer

along the convergent continental plate boundaries

Question 6

Which BEST describes the distribution of mountain ranges on the earth’s surface?

Accepted Answer

Mountain ranges are found along tectonic plates.

Answer

Mountain ranges are mostly in the Himalayas.

Answer

The location of mountain ranges is the basis of dividing the lithosphere.

Answer

Mountain ranges are found in places where volcanoes and earthquake epicenters are also found.

Question 7

During the collision of two plates, there is a tendency for a plate to subduct beneath the other plate. If the subduction continues, even the overriding plate may sink and form a deep trench. What causes the continuous subduction of the plates?

Accepted Answer

The melted plate forms convection currents that pull down the plates together.

Answer

The compression of the plates makes the subducted plate slide down the asthenosphere.

Answer

The interacting plates locked up due to friction making them sink together.

Answer

The overriding plate is pushing down the subducted plate.

Question 8

Which of the given pairs is INCORRECTLY matched?

Accepted Answer

Somali plate: Caribbean plate

Answer

Antarctic plate: Cocos plate

Answer

Pacific plate: Philippine Sea plate

Answer

Eurasian plate: Nazca plate

Question 9

Why do most earthquake epicenters exist along plate boundaries?

I. blocks of rock drop-down at the divergence of plates

II. asthenosphere moves due to convection current

III. rocks slip past each other in the boundaries

IV. subducting plates instantly slide

Accepted Answer

I, III, IV only

Answer

I, II, III, IV

Answer

I only

Answer

I and II only

Question 10

The mid-ocean ridge is formed between the Pacific Plate and Farallon Plate. What type of stress is accumulated in the rock layers that lead to the formation of the ridges?

Accepted Answer

Tension

Answer

Shearing

Answer

Compression

Answer

Slab pull

Question 11

What geologic feature is produced by the divergence of the Eurasian plate and North American plate?

Accepted Answer

Iceland

Answer

African Rift Valley

Answer

Lake Superior

Answer

Lake Baikal

Question 12

How did Alfred Wegener explain the movement of continents?

Accepted Answer

The rotation of the Earth causes continents to move.

Answer

The magnetic field of the Earth causes continents to move.

Answer

Continents move due to earthquakes.

Answer

Continents move due to the gravity of the Earth.

Question 13

Why do two continental plates uplift when they converge?

Accepted Answer

Both plates are light and less dense.

Answer

Either of the plates is heavy and dense.

Answer

Either of the plates is light and less dense.

Answer

Both plates are heavy and dense.

Question 14

The movement of oceanic crusts at the Atlantic Ocean floor produced the mid-oceanic ridge. In which part of the mid-oceanic ridge would the youngest crust be seen?

Accepted Answer

Along the ridge itself

Answer

Farthest from the ridge

Answer

At the middle

Answer

All of these

Question 15

Which of the following explains the pulling of the sliding plate into the subduction zone?

Accepted Answer

Slab pull

Answer

Ridge push

Answer

Tension

Answer

Slab suction

Question 16

Convection currents in the mantle are thought to be the driving force behind the tectonic movement. Which is NOT an effect of convection current in tectonic plates?

Accepted Answer

It causes the sinking of continental plates.

Answer

It causes the convergence of two plates.

Answer

It causes the divergence of two plates.

Answer

It causes subduction of one plate to another.

Question 17

How many lithospheric plates are interacting on the map below?

Accepted Answer

3

Answer

2

Answer

5

Answer

4

Question 18

The Philippines is surrounded by trenches—the Philippine Trench, Manila Trench, Negros Trench, Sulu Trench, and the Cotabato Trench. What does this indicate in terms of the movement of the plates?

Accepted Answer

The convergence of the plates created subduction resulting in trench formation

Answer

The constant dipping of the lithosphere induces earthquakes.

Answer

The divergence of crusts created under thrusting which resulted in the formation of trenches.

Answer

The Philippines is surrounded by colliding continental crusts.

Question 19

How is a divergent plate boundary different from a convergent plate boundary?

Accepted Answer

The divergent plate boundary is creating a new crust while the convergent plate boundary is melting the old crust.

Answer

The divergent boundary and convergent boundary are both causing the plates to move apart.

Answer

The divergent boundary creates islands due to the collision of plates while the convergent plate boundary creates trenches.

Answer

The divergent plate boundary and convergent plate boundary are both destroying the old part of the crust and replacing the crust with new layers of igneous rocks.

Question 20

Which BEST explains plate movement?

Accepted Answer

The convection current in the mantle

Answer

The gravitational pull of the moon

Answer

The magnetic field produced in the outer core

Answer

The difference in the density in the outer core

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