Showing posts with label Science. Show all posts
Showing posts with label Science. Show all posts

Thursday, January 18, 2018

Volcano tectonic earthquakes


We just learned about the Earthquake Swarm, a lot of earthquakes happening in the same area.

Scientists spend a lot of time trying to figure out what causes earthquakes.

We already learned about the big tectonic plates on our planet that crash into each other at faults

Another cause of earthquakes is from Volcanoes and tectonic plates.

We learned a while back about the melted rock called magma that flows around like hot water under a volcano before it erupts.

Sometimes that hot magma flowing around underground can put a lot of pressure on the rocks above it, and cause it to crack, causing an earthquake.
You can think of it like water in a water balloon, when you squeeze the water balloon it will pop!


(from: wikipedia - volcanism)


Kid Facts - Blast from the past: Charcoal

Thursday, January 11, 2018

Earthquake Swarm


We just learned about the Tsunami Earthquake that isn't very big but can trigger a tsunami.

Another type of earthquake is an Earthquake Swarm.

This is when a lot of earthquakes happen in the same area, and are clearly not just aftershocks or foreshocks from one single earthquake.

These can be hundreds or even over a thousand earthquakes in one state, spreading out over a time of days, weeks or months.
One of the ones that happened not long ago was in Nevada, with 1,000 earthquakes between February and November 2008.


(from: wikipedia - earthquake swarm)


Kid Facts - Blast from the past: Flux

Thursday, January 4, 2018

Tsunami Earthquake


We just learned about the Supershear Earthquake.

Another type of earthquake is a Tsunami Earthquake.

This is an earthquake that happens underwater that may not be very big, but it causes a very big tsunami.
It can be dangerous because scientists might not be able to tell a big earthquake happened, and a tsunami might come by surprise.

(from: wikipedia - tsunami earthquake)


Kid Facts - Blast from the past: Gangue

Thursday, December 28, 2017

Supershear Earthquake


We just learned about the Submarine Earthquake that happens underwater.

Another type of quake is a Supershear Earthquake.

A lot of earthquakes happen with the earth moving side to side, like a slinky squishing and then stretching.
Some earthquakes happen like a slinky but you lift it up and the pull it down, causing a wave to go through it.
When this wave is very fast and strong, it can rip through the ground with a lot of force, and cause a lot of damage.
This is a supershear earthquake.


(from: wikipedia - supershear earthquake)


Kid Facts - Blast from the past: Slag

Thursday, December 21, 2017

Submarine Earthquake


We just learned about the Slow Earthquake.

Sometimes earthquakes happen underwater, deep down at the bottom of the ocean floor.
When this happens, it is called a Submarine Earthquake.

The tectonic plates that cover the earth are also at the bottom of the ocean.
When they move and bump into each other, it causes a submarine earthquake.
This causes big waves to happen in the ocean, and can sometimes turn into a gigantic wave called a tsunami, which can cause flooding on cities that are right on the ocean.

Some of the places where these tectonic plates hit are in the very deep parts of the ocean, called "trenches".


(from: wikipedia - submarine earthquake)


Kid Facts - Blast from the past: Smelting

Thursday, December 14, 2017

Slow Earthquake


We just learned about the Remotely Triggered Earthquakes.

Another type of earthquake is the Slow Earthquake.

The earthquakes that we see in movies or see on TV are usually a fast earthquake that is over in just a few seconds or minutes.

Scientists have now found out that sometimes there are earthquakes that last for hours, days or even months!
These are called Slow Earthquakes, and they are very quiet or maybe not even noticed except by some special scientific tools used to measure earthquakes.


(from: wikipedia - slow earthquake)


Kid Facts - Blast from the past: Pig Iron

Thursday, December 7, 2017

Remotely Triggered Earthquakes


We just learned about the Megathrust Earthquake, the earth's most powerful type of quake.

Another type of earthquake is the Remotely Triggered Earthquake.

Sometimes when one earthquake is large enough, it's mainshock or aftershock can cause other earthquakes.
But sometimes a bunch of earthquakes happen in one area within a few days or weeks of each other, but too far to be affected by the other earthquake's mainshock or aftershock.
This can be confusing, because if a bunch of earthquakes are happening in the same state, scientists want to know what is causing them all.

When a bunch of earthquakes happen close by but not close enough for aftershocks to cause it, these are the Remotely Triggered Earthquakes.
Many scientists think these are caused by things like magma or water flows underground, moving around and shifting the tectonic plates and causing the faults to become active and cause quakes.


(from: wikipedia - remotely triggered earthquakes)


Kid Facts - Blast from the past: Blast Furnace

Thursday, November 30, 2017

Megathrust Earthquake


We just learned about the Intraplate Earthquake that happens inside a tectonic plate.

Another type of earthquake is a Megathrust Earthquake.

This is when one of the tectonic plates slides under another plate, which we learned is a Dip-Slip Fault

These are the most powerful earthquakes on the planet, and can cause a lot of destruction.


(from: wikipedia - megathrust earthquake)


Kid Facts - Blast from the past: Wrought Iron

Thursday, November 23, 2017

Intraplate Earthquake


We just learned about the Interplate Earthquake where two plates bump into each other and cause an earthquake.

Another type of earthquake is an Intraplate Earthquake.

This is when an earthquake happens in the middle of a tectonic plate, not near the edges.
Because this isn't by a fault line or border of the plate, scientists are not really sure why these happen, and they do a lot of research to see if there is a hidden fault line somewhere they did not know about.


(from: wikipedia - intraplate earthquake)


Kid Facts - Blast from the past: Sponge Iron

Thursday, November 16, 2017

Interplate Earthquake


We just learned about the Doublet Earthquake.

Another type of earthquake is the Interplate Earthquake.

This is an earthquake that happens where two tectonic plates meet.
These are the types of earthquakes that happen more than any other.


(from: wikipedia - chuetsu earthquake)


Kid Facts - Blast from the past: Bloomery

Thursday, November 9, 2017

Doublet Earthquake


We just learned about the Blind Thrust.

Another type of earthquake is the Doublet Earthquake.

We learned before that most earthquakes have a big mainshock, with a smaller beginning called a foreshock, and a smaller quake after called the aftershock.

Sometimes two big earthquakes happen at the same time very near each other.
When this happens, it's like a double quake, just like the name doublet earthquake.
So when this happens there are two foreshocks, two mainshocks and two aftershocks.
It can be very hard for seismologists to figure out which quakes came from which fault.


(from: wikipedia - doublet earthquake)


Kid Facts - Blast from the past: Iron Ore

Thursday, November 2, 2017

Blind Thrust


We just learned about the Thrust Fault where the earth slips in the reverse direction.

One type of earthquake is a Blind Thrust earthquake.

Usually earthquakes happen in places where there are faults that have been mapped out, so people know where they are and know what to expect.

Sometimes earthquakes happen in areas where people did not think there were any faults, so it is like a blind earthquake because no one was expecting it, and no one was looking there for an earthquake.


(from: wikipedia - blind thrust earthquake)


Kid Facts - Blast from the past: Heat Treatment

Thursday, October 26, 2017

Thrust Fault


We just learned about the Aftershock that happens after the biggest part of the earthquake.

We've learned about the Dip Slip fault before.

Another fault type is a Thrust Fault.
This is a lot like the dip-slip, but the slip goes in the opposite direction.
Sometimes they even call it a reverse thrust fault.


(from: wikipedia - thrust fault)


Kid Facts - Blast from the past: Forge Welding

Thursday, October 19, 2017

Aftershock


We just learned about the Foreshock and Mainshock of an earthquake.

After the Mainshock comes the Aftershock.

When the earthquake passes it's strongest part of the mainshock, any of the other quakes or ground shaking is part of the aftershock.

Separating the earthquake into the three parts (Foreshock, Mainshock and Aftershock) helps earthquake scientists study each part of the quake, and learn about why the earth acts the way it does.


(from: wikipedia - earthquake)


Kid Facts - Blast from the past: Punching

Thursday, October 12, 2017

Mainshock


We just learned about the Foreshock that happens before the biggest part of the earthquake.

The biggest part of the earthquake is called the Mainshock.
This is when the earthquake is at it's strongest force.


(from: wikipedia - earthquake)


Kid Facts - Blast from the past: Swaging

Thursday, October 5, 2017

Foreshock


We just learned about the Ring Fault.

Another part of earthquake science is the Foreshock.

Most earthquakes have multiple shocks, where the earth is shaking.
The first one that is smaller before the biggest one is called the foreshock.


(from: wikipedia - earthquake)


Kid Facts - Blast from the past: Upsetting

Thursday, September 28, 2017

Ring Fault


We just learned about the Listric Fault.

Another type of fault is a Ring Fault.

This fault is in a crater or a volcano, where the volcano has collapsed, or the ground caved in after getting hit by a meteorite.


(from: wikipedia - chesapeake bay impact crater)


Kid Facts - Blast from the past: Bending

Thursday, September 21, 2017

Listric Fault


We just learned about the Oblique-Slip Fault.

Another earthquake fault is a Listric Fault.

This is like the Dip-Slip fault that we learned about before, but the fault line makes a curved line where the earth's crust slides down.

(from: wikipedia - fault (geology))


Kid Facts - Blast from the past: Drawing Down

Thursday, September 14, 2017

Oblique-Slip Fault


We just learned about the Dip-Slip Fault.

Another type of earthquake fault is the Oblique-Slip Fault.

This is when two the tectonic plates move, and the earth's crust bumps into each other in both a Strike-Slip and Dip-Slip way.

That means the earth went side to side, and up and down.


(from: wikipedia - fault (geology))


Kid Facts - Blast from the past: Blizzard

Thursday, September 7, 2017

Dip-slip Fault


We just learned about the Strike-slip fault.

Another type of earthquake fault is the Dip-slip fault.

This happens when the tectonic plates hit each other, and one of them slips down and the other slips up.


(from: wikipedia - fault (geology))



(from: wikipedia - fault (geology))


Kid Facts - Blast from the past: Fuller