How do plants contribute to weathering?

Which form of weathering results from chemical reactions causing the breakdown of rocks?

• Chemical Weathering

• Mechanical Weathering

• Biological Weathering

• None of the above

Which Philippine agency tracks cyclones entering the Philippine Area of Responsibility?

• PAGASA

• PHIVOLCS

• PAGIBIG

• NASA

In the sun’s cycle, what represents an explosion of high-mass stars?

• Supernova

• Nebula

• Black hole

• Super Red Giant Star

How is soil erosion caused by wind typically manifested?

• Ashes and dust near Mt. Pinatubo

• Muddy water in the field

• Sandstorm

• A pile of soil in the river

What phenomenon occurs when strong winds push water into the sea, resulting in big waves hitting coastal areas?

• Storm surge

• Tsunami

• Landslide

• Flood

Which process involves the deposition of sediment carried by various agents?

• Deposition

• Erosion

• Weathering

• Sedimentation

What causes water to become muddy after heavy rainfall?

• The fine dust particles dissolved in water.

• The gravel and sand carried by the water.

• The pebbles moved along with the water.

• The rainwater turned brown in color.

How do trees contribute to erosion prevention?

• The roots absorb the water at once.

• The roots hold the soil firmly together.

• The roots secrete acid, attacking the rocks.

• The trees block the way of running water.

What is the most destructive type of mass movement involving rapid sliding down a steep slope?

• Landslide

• Mudflow (Lahar)

• Tsunami

• Volcanic Eruptions