Science Helpdesk

Earthquakes in Geography4kids.What, why and how of the earthquakes.

The science of earthquakes.The basic scientific facts behind the earthquakes.

Explore a virtual volcano.Learn all the basic facts about volcanoes through a visual approach.

Volcanoes in Geography4kids.Types and structure; the lava and its flow.

Volcanoes.An easy to understand on-line book by the U.S. Geological Survey.

Structure of the Geosphere in Geography4kids.Learn how the Geosphere is structured dy density and the name of some of its parts and forms.

Tectonic plates in Geography4kids.What are they and how do they behave.

Plate tectonics in a nutshell.A simple starting point for exploring plate tectonics.

Plate tectonics.A great set of investigations and visualizations at Exploring Earth online book.

The story of plate tectonics.A comprehensive on-line book by the U.S. Geological Survey.

This dynamic planet.World map of volcanoes, earthquakes, impact craters, and plate tectonics.

The Earth in 250 million years.Have a look at the state of the continents in 250 my time.

Tectonic plates and plate boundaries.Google Earth's file showing the locations of the plates and their boundaries in the Earth's crust.

Wegener's continental drift.Animation that shows how continents have been shifting in the past 250 my, since the last Pangea.

Bullard's fit of continents.Animation that shows how continents fit almost perfectly in the base of the continental rise.

Sea floor spreading.Animation that shows how the seabed has been spreading out in the past 250 my, since the last Pangea.

Types of rocks in Geography4kids.Learn the main features of the three types of rocks.

Observe igneous volcanic rocks forming.Visualize how a basalt rock is formed after the cooling of lava at Exploring Earth online book.

Observe metamorphic rocks forming.Visualize how a metamorphic rock is formed after heavy pressure at Exploring Earth online book.