Seismic and Typhoon Quiz

In terms of seismic hazard, which type of fault is considered more dangerous?

• Active fault

• Inactive fault

• Both active and inactive faults

• It depends on the geological context

Which of the following travels the fastest and is detected first in the seismic station?

• Love wave

• Surface wave

• Primary wave

• Secondary wave

How do rock particles move during the passage of primary waves?

• back and forth parallel to the direction of the waves

• back and forth perpendicular to the direction of the waves

• in circular motion

• no motion

Which of the following is a property of a primary wave?

• It travels through a vacuum.

• It causes rock particles to vibrate.

• It is the slowest, largest and causes the most destruction.

• It travels the fastest and causes rock material to move back and forth.

Which statement is true about P and S waves?

• P waves and S waves are the same.

• P waves are the slower waves that arrive second at the seismic station after S waves.

• P waves are the fastest waves that arrive first at the seismic station before S waves.

• P waves are the primary waves that move side to side as they travel from the earthquakes focus.

Why is there an abrupt change in the speed of seismic waves as they travel inside the Earth? It is because seismic waves are ___________.

• colliding to each other.

• going into a material with different properties and densities

• overtaking the compressional waves

• passing through a material with the same density

Why do S waves travel in solids only? Because …

• solids have enough shear strength.

• solids have minerals and properties.

• solids have particles closely packed together

• solids have rigid structure and resistant to the force applied

What is the other term for tropical cyclone?

• Earthquake

• Tsunami

• Typhoon

• Wildfire

Which is NOT a factor in the formation of a typhoon?

• high humidity

• warm ocean water

• warm river water

• optimal location of typhoon

At what wind speed does a tropical cyclone officially become a typhoon?

• 80 km/h

• 119 km/h

• 160 km/h

• 209 km/h