Discover how water displacement can help scientists accurately measure volume.

This lesson introduces the learner to the concepts of distance and displacement and explains how to differentiate between the two. It is 3 of 3 in the series titled "Introduction to Distance and Displacement."

A unique approach to determining size and weight of an object through water displacement with a variety of balls made of different materials and pitchers of water.

A PDF publication from the U.N. on the state of refugees in the world 2001. Provides data on countries that are taking in refugees, asylum seekers and where they have fled.

Captivating photo slideshow that shows a section of New Orleans six months after Hurricane Katrina. The damage in the photos is obvious.

Outstanding interactive timeline of Hurricane Katrina.

Resource illustrates the Hurricane Katrina relief efforts in this interactive photo essay.

An 1885 map showing the holdings of the many Indian tribes displaced to the Indian Territory. From the National Archives.

This lesson introduces the concepts of vectors and scalars and explains how they are related to distance and displacement. It is 3 of 3 in the series titled "Introduction to Vectors & Scalars."

A geologic map from 1911 of south-central Connecticut showing the displacement of trap ridges near northern end of West Rock Ridge and corresponding displacement in the crystallines of the bordering uplands.

This archaeological site was occupied by the Apalachicola and Yuchi tribes. During the 17th century, the Apalachicola tribe allied with the Spanish in Florida against the English in Carolina and were ultimately destroyed as a culture....

A lengthy and detailed history of the Canadian Metis, a native-American group living in western Canada.They were displaced when white settlers moved into the area. The Metis rebelled at least once during this period. Click on the various...

This photograph shows a displaced family from Pakistan's North West Frontier Province.

This photograph shows one of the many displaced children of Pakistan's North West frontier province.

This image depicts a number of people displaced by the 2010 floods in Pakistan.

Nicolaus Copernicus (February 19, 1473 - May 24, 1543) was the first astronomer to formulate a scientifically based heliocentric cosmology that displaced the Earth from the center of the universe. His epochal book, De revolutionibus...

This lesson will describe the concepts of volume and mass and show how to calculate volume and mass.

November, 2005, report on life in the FEMA trailer parks that emerged in the Gulf Coast regions that were devastated by Hurricane Katrina.

The evacuation of New Orleans is chronicled in this September, 2005, report.

Detailed timeline of Hurricane Katrina from August 28-September 9, 2005. Links to other stories, video, and pictures accompany this excellent timeline.

Immediately after Hurricane Katrina, reports of the devastation of New Orleans is explored by BBC News. A video, other report links, and an interactive map of Katrina's path accompany this August, 2005, report.

Fascinating look at a New Orleans rescue mission by volunteers who are attempting to help those impacted by the flooding of New Orleans brought on by Hurricane Katrina. Report is from September, 2005.

Fascinating look at a New Orleans rescue mission by volunteers who are attempting to help those impacted by the flooding of New Orleans brought on by Hurricane Katrina. Report is from September, 2005.

Brief BBC News report portraying the plight of some of the people stranded in New Orleans and effected by Hurricane Katrina. Report is from September, 2005.