Showing posts with label Earthquakes. Show all posts
Showing posts with label Earthquakes. Show all posts

Thursday, August 17, 2017

Tectonic Plates


We just learned about the earthquake Hypocenter.

Another part of earthquakes is the Tectonic Plates.

The scientist who study earthquakes have mapped out 15 big areas on the earth, on every continent and around the oceans.
These areas are called tectonic plates, and they move around little by little every year.
When one tectonic plate area moves, it bumps into another tectonic plate, and it causes an earthquake!

These plates are millions of miles wide, and over 60 miles deep.
Because they are so huge, when they bump into each other the earth crashing together has a lot of force and makes a big problem.


(from: wikipedia - list of tectonic plates)


Kid Facts - Blast from the past: Sledgehammer

Thursday, August 10, 2017

Hypocenter


We just learned about the earthquake Epicenter.

Another important thing in earthquake science is the Hypocenter.

This is the spot underground where the earthquake first started.
The epicenter is right above the hypocenter, but at the surface of the earth.


(from: wikipedia - hypocenter)


Kid Facts - Blast from the past: Straight Peen Hammer

Thursday, August 3, 2017

Epicenter


Let's keep learning about Earthquakes.

When an earthquake happens underground, the spot on the earth's surface above where the earthquake is strongest is called the epicenter.


(from: wikipedia - epicenter)


Kid Facts - Blast from the past: Cross Peen Hammer

Thursday, July 27, 2017

Earthquakes


We've learned a whole lot about how to work with metal.
Everything from furnaces to get the metal from iron ore, to working with it on anvils, to using it on machines like lathes or mills.

Let's start learning a little bit about Earthquakes.
Earthquakes happen all over the world, even underwater!
There are scientific tools for predicting and measuring quakes, and there is a lot of scientific study over what makes an earthquake happen.

A scientist who studies earthquakes is called a seismologist.


(from: wikipedia - earthquake)


Kid Facts - Blast from the past: Ball Peen Hammer