Class 8 Earthquake Questions: Quiz and Flashcards

What is the sudden shaking or movement of the Earth's crust called?

What is the spot directly above the focus called?

What is referred to as a break on the earth's crust along which significant movement has taken place?

What triggers the movement of a fault?

Where would the shaking most likely be greater when an earthquake occurs?

Which scale measures an earthquake's intensity based on the observed effects on people and structures?

What measures an earthquake's intensity based on the observed effects on people and structures?

Which statement BEST describes the state of earthquake prediction?

What government agency is tasked to identify the intensity of earthquakes in the Philippines?

Why is the Philippines prone to earthquakes?

What is the bending of light when it travels from one medium to another of different optical densities called?

In the colors of light, which color is the least bent?

Earthquakes

The sudden shaking or movement of the Earth's crust is called an earthquake.
The spot directly above the focus of an earthquake is called the epicenter.
A break on the Earth's crust along which significant movement has taken place is referred to as a fault.
The movement of a fault is triggered by the buildup of stress in the Earth's crust.

Earthquake Measurement

The shaking is most likely to be greater near the epicenter when an earthquake occurs.
The Mercalli scale measures an earthquake's intensity based on the observed effects on people and structures.
The intensity of an earthquake is measured by the effects it produces, such as the amount of damage caused to structures and the environment.

Earthquake Prediction

The state of earthquake prediction is that it is still not possible to accurately predict when and where an earthquake will occur.

Philippines and Earthquakes

The Philippine Institute of Volcanology and Seismology (PHIVOLCS) is the government agency tasked to identify the intensity of earthquakes in the Philippines.
The Philippines is prone to earthquakes due to its location in the Pacific Ring of Fire, where several tectonic plates meet and interact.

Light Refraction

The bending of light when it travels from one medium to another of different optical densities is called refraction.
The color of light that is least bent is red.

Test your knowledge of earthquakes and faults with this Grade 8 2nd quarter reviewer. Identify key concepts related to fault types, earthquake features, and geological terms.