It's About Time
Succession in Communities
What occurs following a natural disaster? High schoolers research this question and others as they investigate natural succession after a disaster. First, as they differentiate between primary and secondary succession, they explain how...
It's About Time
Impact Events and the Earth System
What would happen to Earth if an asteroid struck it? Assist young scientists as they explore the mechanics of an impact event and effects caused by it; calculate the energy released once an asteroid strikes Earth's surface; and compare...