PPT
NASA

Nasa: Slr and Gps (And Plate Tectonics and Earthquakes) [Pdf]

For Students 9th - 10th
This slideshow explains how satellites are used to measure the movement of tectonic plates.
Graphic
Curated OER

Npr All Things Considered: Hunting for Gravity Waves

For Students 9th - 10th
A report on US attempts to detect the "gravity waves" that Einstein predicted. Laser Interferometer Gravitational-Wave Observatories in Louisiana and Washington, looking for "Tremors in the fabric of space-time," are described in words...