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This is an activity that models the operation of a seismograph, a tool used to measure the size of earthquakes.

This activity provides a hands-on experience with a scale model, a relatively high viscosity fluid, and feeding behaviors.

In this activity, learners map their world by drawing a plan of their bedroom.

In this activity, learners investigate the concepts of relative size and distance by creating a basic model of the solar system.

Learners build a simple hovercraft using air from a balloon to levitate a craft made from a compact disc (CD).

Learners examine collisions between two skateboards carrying different masses. They learn about conservation of momentum in collisions.

Learners build structures from spaghetti and marshmallows to determine which structures are able to handle the greatest load.

Learners construct a rocket from a balloon propelled along a guide string.

Learners build at least two different spinners (tops) to investigate how mass distribution, size, and shape affect the length of time the spinner spins.

Water on Earth is in lakes, the ocean, rivers, underground, and frozen glaciers.

Learners investigate the concept of humidity by using a dry and wet sponge as a model. They determine a model for 100% humidity, a sponge saturated with water.

To learn how friction affects motion, learners build a measurement tool from a rubber band and other simple materials.

In this activity (page 1 of the PDF under SciGirls Activity: Bogs), learners will test cups full of potting soil, sand, and sphagnum moss to see which earth material is able to soak up the most water.