An experiment in density where colored water, both hot and cold, are poured into containers of water at room temperature. Students will observe that the warm water rises and the cold water sinks due to their different densities.

In this science inquiry, students investigate whether volume or density of objects determine the floating or sinking in water. Using a rock and a block of wood teachers engage students in the discussion of density, mass and volume.

For this activity, students investigate whether objects and liquids float or sink when placed in water. As they proceed, they will develop an understanding of what density is. Student handouts are provided.

Students investigate water by estimating how long it takes to freeze, then see if the ice cube will float in water, and eventually work with other items to see if they sink or float in water.

Learners investigate the properties of water in the ice and liquid phase as it relates to convection in the ocean and density driven circulation, and ultimately the climate.

This site gives background information to ocean water and its contents. It has a link to an detailed chart showing the minerals and their content amount in ocean water. It also has links to activities.

In this chemistry field lab, students will determine the density, pH, and water content of 4 types of soil. Students compare class data and write a lab report describing their results and then analyze their findings to report on the...

In this activity, students will learn about density by determining how to make an egg float in water. By the end of the instructional activity, students will understand that density and weight are different and that density matters in...

Because different liquids have different properties, density also differs. In this activity from the Illinois Institute of Technology, students will calculate densities of water, dish-washing detergent, cooking oil, and other liquids.

Learn how salt increases the density of water and creates a condition of buoyancy.

Students map the patterns of the major ocean currents, and learn about the influences of wind, water temperature, landmasses, and water density on currents.

An experiment in density. After a review of floating and sinking of different materials, pupils test four bottles, all holding four ounces of water, to see if they will float or sink. They each contain a different density of sugar water,...

The King of Syracuse reportedly requested Archimedes' advice for determining if a crown was made with the appropriate mixture of gold and silver. The problem asks students to find the amount of water displaced in Archimedes' experiment...

This instructional activity helps students understand the variables that influence the abundance of phytoplankton. Students will make predictions about the timing of the spring phytoplankton bloom in the Gulf of Maine. Furthermore, data...

Engage students in the study of the ocean and saltwater with these activities. Students will see that saltwater has different physical properties than freshwater - mainly density. This instructional activity can serve as a springboard...

This lesson introduces students to the important concept of density. The focus is on the more easily understood densities of solids, but students can also explore the densities of liquids and gases. Students devise methods to determine...

Young scholars use modeling clay, a material that is denser than water and thus ordinarily sinks in water, to discover the principle of buoyancy. They begin by designing and building boats out of clay that will float in water, and then...

Students investigate density in this activity when they try to find out if oil or water has a higher density.

This activity helps learners understand how the melting of ice cubes floating in water is influenced by the salinity of the water. It will introduce the concept of density and density driven currents and provide practice in using the...

In this introductory lab activity, students will collect data that will graphically illustrate the relationship between mass and volume in determining the density in chemistry. Based on density, students will seek to determine a...

SPRK STEM challenges are fun, interactive activities that challenge students to use creativity and team-work to move through simple steps of the design process in order to build Sphero-based creations. The Hydro-hypothesis challenge...

Students learn about the factors that drive ocean currents by measuring the density of ocean water and tap water.

In this lab, students will demonstrate observation skills as they design an experiment to separate colors of various water-based pens in order to learn about mixtures and solutions. Students will determine a variable to test and complete...

In this lesson, young scholars will understand that temperature changes can cause density changes in water and in air.