Science Café Cleveland presents:



Rocks in Motion:

Earthquakes and Tectonic Plates


August 12, 2019



David Saja, PhD

Endowed Chair and Curator of Mineralogy, Cleveland Museum of Natural History



The Earth is a very dynamic place. Geologic change occurs very slowly and progressively, but it can also happen episodically—i.e. abruptly—in "punctuated" events.

Every day, sand moves imperceptibly along a beach by longshore drift. It also moves suddenly by the erosive energy of summer storms. Similarly, the plates of the Earth are imperceptibly moving and quaking... all the time, every day. Most of the time, this motion happens in small quantities and in unpopulated areas, and thus goes unnoticed. It is the punctuated event of the large-magnitude earthquake that wakes us up to the reality that we live on a continuously changing planet.

We need to learn about our world so that we can anticipate the challenges of living on planet in motion. This month's discussion will reveal the Earth's interior, and what science has learned about its structure, its movements, and its quakes!


This month's speaker has recommended the following links for further exploration of the topic:

"Cleveland Area Rattled By 4.0 Magnitude Earthquake"

"United States Geological Survey's Earthquakes Hazard Survey"




The Music Box Supper Club - Concert Hall

1148 Main Avenue

Cleveland, Ohio 44113



August 12, 2019

Doors will be open 5:30–9:00 pm (last call at 8:45pm). Presentation and discussion is from 7:00–8:00pm. The Concert Hall will also host a limited menu before and during the event, not to mention a full bar! (Click here to view menu). Come early, get a good seat, grab a bite and a beverage, and enjoy the discussion!



Sponsored by Case Western Reserve University chapter of Sigma Xi, WCPN ideastream, and the Music Box Supper Club.