Students consider the causes of density at a microscopic level. They then discover that one cause of density has to do with how many protons and neutrons the material contains.

Fourth graders examine various types of rocks and record their properties. They collect rocks at home and bring them to school where they are mixed and distributed to groups of students. After writing their observations on...

Young scholars examine how circulation currents of the ocean. They use a tub of hot and cold water to demonstrate the currents. They discover how salinity and temperature of water affect its movement.

Learners experiment to discover that salt water is denser than fresh water by creating color coded solutions. They examine how heavy rainstorms and high tides develop layers of different degrees of density.

Students assess the ocean's microstructure by analyzing graphs created during tne Ronald H.Brown research cruise. they discuss at what depths various sea animals live and write paragraphs on data analysis from the graphs.

Students end up learning the formula for density and calculate the densities of various materials, and predict if they sink or float.

In this amazing interactive tutorial, you'll learn about minerals - the building blocks or rocks and the Earth. We'll talk about what makes something a mineral, and how differences in these minerals let us organize them into different...

Predict and test everyday objects as to whether they sink or float.

By making oil float on water--with the help of other ingredients--students can create a lava-lite effect.

Become an engineer, and design a submarine that moves in the water like a real submarine. Try making it sink, float, and hover in the water.

An experiment to test what happens when ocean water hits a freshwater estuary. Each step is demonstrated with photographs and the difference between salinity and density is explained.

This learning module discusses the definition of matter and what mass and volume measure. Module includes pictures, videos, and review questions.