GS One‑Liners
high‑yield facts · smart revision
5107
facts
5107
results
Latest facts first
| # | Question & Answer |
|---|---|
| 3276 |
Which seismic waves cause the most destruction?
-
Surface Waves (L-waves and R-waves).
|
| 3277 |
Which seismic waves are shear waves and can only travel through solid material?
-
S-waves.
|
| 3278 |
Which seismic waves are the fastest and can travel through both solid and liquid material?
-
P-waves.
|
| 3279 |
What are the three types of seismic waves?
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P-waves (Primary), S-waves (Secondary), and Surface waves (L-waves and R-waves).
|
| 3280 |
What is the point within the Earth where the earthquake originates called?
-
Focus (or Hypocenter).
|
| 3281 |
What is the point on the surface of the Earth directly above the focus of an earthquake called?
-
Epicentre.
|
| 3282 |
What are the two types of earthquakes based on their depth?
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Shallow-focus (0-70 km) and Deep-focus (70-700 km).
|
| 3283 |
What are the gases predominantly released during a volcanic eruption?
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Water Vapour, Carbon Dioxide, and Sulphur Dioxide.
|
| 3284 |
What is a hot spring that intermittently erupts columns of water and steam called?
-
Geyser.
|
| 3285 |
What are the two main types of hot springs?
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Geysers and Fumaroles (or Hot Springs proper).
|
| 3286 |
What is the term for volcanic activity characterized by the emission of gases and steam from small holes?
-
Fumaroles.
|
| 3287 |
What are volcanic materials (like ash, cinders, and small fragments) ejected during an eruption called?
-
Pyroclasts.
|
| 3288 |
What is the term for a large, basin-shaped depression at the top of a volcano, often formed after a massive eruption collapses the cone?
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Caldera.
|
| 3289 |
What is the opening in the Earth’s crust through which volcanic material erupts called?
-
Vent (or Crater).
|
| 3290 |
What is the largest type of volcano in terms of volume and area?
-
Shield Volcano.
|
| 3291 |
What type of lava is associated with quiet eruptions and forms broad, gently sloping volcanoes?
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Basaltic Lava.
|
| 3292 |
What is the most destructive type of volcano?
-
Composite or Stratovolcano.
|
| 3293 |
What is a volcano that is not likely to erupt again called?
-
Extinct Volcano.
|
| 3294 |
What is a volcano that has not erupted recently but may erupt again called?
-
Dormant Volcano.
|
| 3295 |
What is a volcano that has erupted in historical times called?
-
Active Volcano.
|
| 3296 |
What are the four main types of volcanoes based on their activity?
-
Active, Dormant, Extinct, and Caldera.
|
| 3297 |
What is the molten material called once it reaches the Earth's surface?
-
Lava.
|
| 3298 |
What is the term for the molten material when it is still inside the Earth's crust?
-
Magma.
|
| 3299 |
Which type of plate boundary is associated with the largest number of volcanoes?
-
Convergent Plate Boundaries (Subduction Zones).
|
| 3300 |
What is the main cause of Volcanism (volcanic activity)?
-
The movement of tectonic plates.
|