Earth Internal Process - SS3 Geography Past Questions and Answers - page 2
Which type of wave is the fastest and arrives first during an earthquake?
S-waves
Tremor waves
P-waves
Shock waves
The shaking of the ground during an earthquake is often referred to as:
Shock waves
Tremor
Tidal waves
Epicenter waves
What is the primary factor responsible for earthquakes caused by human activities?
Plate tectonics
Volcanic eruptions
Mining and drilling
Solar flares
What is the term for the underground point where an earthquake's energy is released, often deep within the Earth's crust?
Tremor
Shock wave
Origin
Epicenter
Earthquake waves that cannot travel through liquids are known as:
Tremor waves
S-waves
P-waves
Epicenter waves
Explain the main cause of earthquakes.
The main cause of earthquakes is the movement of Earth's tectonic plates.
Describe the difference between the epicenter and the origin of an earthquake.
The epicenter is the point on the Earth's surface directly above the earthquake's origin. The origin, also known as the hypocenter, is the point inside the Earth where the energy is released.
What are the two primary types of seismic waves, and how do they differ?
The two primary types of seismic waves are P-waves (Primary waves) and S-waves (Secondary waves). P-waves are faster and can travel through both solid and liquid materials, while S-waves are slower and cannot pass through liquids.
How do shock waves contribute to the shaking during an earthquake?
Shock waves are powerful waves of energy that radiate outward from the earthquake's origin. They cause the ground to shake and are responsible for most of the shaking during an earthquake.
What are some human activities that can trigger earthquakes, and how do they do so?
Human activities such as mining, drilling, and the injection of fluids into the Earth's crust can trigger earthquakes by altering the stress and pressure within the crust. This can lead to the sudden release of energy and the occurrence of seismic events.