Learn how to make your own topographic map! Demonstrates that a contour line is a line where all points on the line are of equal elevation. This video uses blue water to fill a plastic volcano mold. Water lines are traced to show the contour lines.
Come up with questions about a topic and learn new vocabulary words to determine answers using an Ask, Answer, Learn table.
Fantastic images of Earth from space are created from instruments on spacecraft. These images can affect how humans perceive their planet.