*Earthquakes* How do we locate them?

Question of the Day: Where did the largest earthquake ever recorded in the US occur?

Thursday, November 4th 1. Locate an Earthquake

2. Key Concept bingo

Prince William Sound, Alaska Magnitude 9.2

Locate an Earthquake…

P and S waves 2 minutes apart

Fingerprint of an Earthquake

Locate an Earthquake…

P and S waves 3 minutes apart

• Calculate how far away the Earthquake was if the time difference was 3 minutes

• Then follow down to see how far away the Earth quake was…

Locate an Earthquake…

P and S waves 3 minutes apart

P and S waves 3 min 40 sec apart

• Calculate how far away the Earthquake was if the time difference was 3 minutes 40 seconds away

Locate an Earthquake…

P and S waves 3 minutes apart

P and S waves 3 min 40 sec apart

P and S waves 4 minutes apart

• Calculate how far away the Earthquake was if the time difference was 4 minutes

Draw circles and find Earthquake

Earthquake was HERE!!!