In this "Curious? What Makes Waves?" worksheet, students answer three questions interactively about waves, then check their answers online.

Can Earth's oceans produce a steady supply of clean energy? Scholars explore the uses of tidal and thermal energy in the 11th installment of a 13-part series about ocean-based alternative energy sources. Learners examine the...

In this tsunamis worksheet, students read the article, answer true and false questions, complete synonym matching, complete phrase matching, complete a gap fill, answer short answer questions, answer discussion questions, write, and more...

In this online interactive vocabulary worksheet, students respond to 15 matching questions regarding vocabulary words. Students may check their answers immediately.

In this ESL vocabulary activity, students read a set of 10 descriptions related to disasters and determine what is being described. Students may click on an answer button for immediate feedback.

In this causes of floods learning exercise, students choose the best word from a word list in order to complete sentences about the causes of floods.