earthquakes introduction to earthquakes. aim, learning target and agenda aim: how do i explain and...
TRANSCRIPT
Aim, Learning Target and Agenda AIM:
How do I explain and illustrate what happens during an earthquake?
Learning Target: I can use explain and illustrate what happens during an
earthquake
Agenda Catalyst
Intro to C-squared
Earthquake footage
Earthquake vocab
Practice!
Do Now You have 4 minutes!
What is the name of the plate boundary where earthquakes usually occur? Divergent c. Convergent
Subducting d. Transverse
Arrows in the block diagram (at right) show the relative movement along a tectonic plate boundary. Between which two tectonic plates could this type of plate boundary exist?
Earthquake footage From a quake in California in 1989
http://video.nationalgeographic.com/video/player/environment/environment-natural-disasters/earthquakes/earthquake-montage.html
Earthquake A natural, rapid shaking of the lithosphere
caused when rocks are displaced due to the release of energy stored in rocks; most caused by rapid movements along faults, but also associated with other events, such as volcanic eruptions.
Earthquakes occur at TRANSFORM boundaries
Some vocab!Fault – a crack in a landmass where
there has been displacement, shifting, ormovement of land on both sides
Focus - the place where an earthquake originates
Epicenter- the place on Earth’s surface lyingdirectly above the focus,or the origin of an earthquake
Energy builds up and is released in the form of...
Seismic waves – the energy waves given off by an earthquake. Also called earthquake waves.
Two types of seismic waves
P waves S waves
P for primary (meaning 1st)
S for secondary (meaning 2nd)
Faster Slower
Travels throiugh solid, liquids and gas
Travels through solids only