WorksheetsScience
Total questions: 21
Worksheet time: 14mins
What are tectonic plates?
Te Earth is made of many parts or "plates" that are constantly moving very slowly.
These are the tectonic plates, whose motion make continents change position over time.
Studies the Earth´s crust
Tectonic Accidents
The mid-ocean ridges
Subduction zones
Island or mountain ranges can be formed in subduction zones.
Geological faults
The mid-ocean ridges is...
If you down to the bottowm of the ocean, you would see a mountain chain that looks like a series of giant scars running along the planet´s entire seafloor.
Tectonic plates come apart and "scars" are formed on ocean floor.
Subduction zones is...
Plates collide, one is pushed under the other.
These collisions create deep trenches and mountain.
Tectonic plates come apart and "scars" are formed on ocean floors.
Island or mountain ranges can be formed in subduction zones when...
For example: the collision between the Sourth American Plate and the Nazca Plate created the Andes Mountain in western South America.
Similarly, the collision between the Caribbean Plate and the North American Plate created the Antilles islands.
Geological faults is...
Are cracks or fissures that originate in one plate, and are a product of movement in the lithosphere.
Geological fault can cause earthquakes.
None of the above
How mountains form.
Are the result of movements of the lithsphere, when it contracts like an accordion in formation process we call orogeny.
Are also formed at the convergent borders of tectonic plates, when one plate collides with another.
In other words, an earthquake at the bottom of the ocean.
How Vocanoes form.
Are openings in Earth´s crust where magma comes to the surface.
In general, volcanoes are high and shaped lide an inverted funnel.
The expulsion of magma from the inside is known as eruption, and not all eruptions are the same.
What are the causes of an earthquake? They are movements of Earth´s crust that are usually produced by shifting tectonic plates. When the plates move, tension builds. This release of tension is what causes an earthquake.
True
False
Instrumens used to measure the scale of an earthquake.
measuring tape
The Richter Scale
ruler
The Richter Scale is a succesion of values used to determine an a earthquake´s strength; the higher the number represented on the scale.
True
False
How do tsunami happen?
Is a see wave that is produced when a seaquake occurs.
Sea earthquakes generate waves that travel long distance.
These wave to in-land, causing the phenomena.
What are the causes of an earthquake? As you´ve learned, this energy travels in the form of seismic waves, which shake the surface and anything that happens to be on it at the time
True
False
What is Geology?
Studies The Earth´s crust.
Studies the oceans.
Studies the rivers and lakes
What are Tectonic Accidents?
Happens when plates clash or come apart.
Studies the Earth´s crust
Earthquakes is...
As we know, tectonic plates are under constant movement.
As they move something called tension begins building up.
When tension is realsed, Earthquakes happen.
None of the above.
In Earthquakes - The focus is the point where the tension is happening.
True
False
The epicenter is not directly above the earthquake.
True
False
What are volcanoes?
Are our moste explosive landforms.
Landsforms able to eject molten rock and clouds of thick ash high into the atmosphere with devasting consequences.
None of the above
Vocalnoes - What are they to be found?
Vocanoes mostly occur along destructive and constructive plate.
Boundaries where plate are pused together or dragged apart.
All the above
Volcanoes - How does it happen?
Cracks or weaknesses alow magma and rise up from below the Earth´s crust.
Pressure builds up, which then releases suddenly causing the magma to explode.
A volcanic eruption.
None of the above
