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Earth processes  
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In this demonstration, liquids of different density are mixed to demonstrate how the layers of the Earth were formed as the denser materials sank to the inner portion of the Earth with the less dense materials, such as our crust, remaining on top. A... (View More)

In this activity, students observe how elastic rebound creates waves, using an apparatus consisting of a plastic tub and paint stir stick. The resource is part of the teacher's guide accompanying the video, NASA SciFiles: The Case of the Shaky... (View More)

In this activity, a balloon, flour, pebbles and a funnel are used to create a simulation of a meteorite impact. Balloons containing flour and pebbles are thrown onto a hard surface and students note the pattern of impact and draw it in their... (View More)

Atmospheric scientists use computer models to forecast the position of a moving volcanic cloud, and remote sensing can identify its components, including gases and aerosols. This resource provides ideas for classroom investigation of these topics,... (View More)

Keywords: Aviation hazards

The effects of volcanoes on both the environment and people are the focus of this investigation. Students are introduced to the term "buffer" and are tasked with creating a possible buffer zone around Mount St. Helens. Students begin by assigning 32... (View More)

Satellite images of Mercury and Mars are used to illustrate craters and generate a discussion about their cause. After comparing those images with one of Earth, students explore the reason for the lack of visible craters on our planet. The abundance... (View More)

Audience: Elementary school
Materials Cost: 1 cent - $1 per student

In this demonstration, students learn that heat makes air expand and rise, and learn how pressure systems are formed by observing the creation of a convection current. A large rectangular pan, a salad dressing bottle, a small latex balloon and water... (View More)

This investigation requires students to locate several major U.S. cities using four different sources: an outline map, a nighttime lights image, an atlas map, and a space shuttle image. After analyzing and comparing the information from those... (View More)

The impacts of natural disasters are described in imaginary pen pal letters from peers who reside in the pathways of four authentic natural disasters: a volcanic lava flow in Hawaii, a volcanic ash cloud in Russia, a hurricane in the Gulf of Mexico... (View More)

Audience: Elementary school
Materials Cost: 1 cent - $1

The difficulties in predicting landfall of a hurricane are modeled In this kinesthetic activity. Students predict the trajectory of a ball rolled to their partner. They conduct several trials, predicting the path of the ball, observing the actual... (View More)