Ocean currents have a profound effect on the climates of the continents, especially those regions bordering on the ocean. The Gulf Stream makes northwest Europe much more temperate than any other region at the same latitude, and the...

In this activity, students use the virtual lab to create dilute solutions from a concentrated stock solution of acids or bases. They must first calculate the correct volumes of concentrated acid solution and water to mix together to...

After reading some facts about the properties of water, students conduct experiments to measure the relative densities of water, ice and snow and submit the results to the website.

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

Students contrast the densities of oil and water in this lab activity. Can be done in groups or individually. This resource is in PDF form; requires Adobe Reader.

[Free Registration/Login Required] Students will be able to change the mass and volume of an item and observe if it floats, sinks, or remains at a certain depth in the water. Students will also be able to change the liquid in level 2.

Learn how fluids move through our atmosphere and water. This experiment explains atmospheric convection currents (thunderstorms), the Gulf Stream, and temperature inversion. A video is included.

This lesson focuses on predicting chemical reactions using The Group 1 elements in the Periodic Table are known as the alkali metals. They include lithium, sodium and potassium, which all react vigorously with air and water. It provides...

Simulation of an Atwood machine where two masses of varying densities are suspended in water using a pulley system. Adjust the densities of the masses, their positions and the water level to see how the changing gravitational, buoyant,...

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.

Each student uses a small quantity of modeling clay to make a boat that will float in a tub of water. The object is to build a boat that will hold as much weight as possible without sinking. In the process of designing and testing their...

In this experiment, you test whether two different bowling balls will float or sink, then determine the density of each of the balls to see if they are less than that of water.

This lesson plan is a great way to show convection currents in water. Students will see what happens to water as it gets warmed.

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.

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

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...

This site provides a pair of activities to demonstrate convection currents in air and water. Encourages students to view air as a fluid.

[Free Registration/Login Required] This flipchart is a multi-subject themed primary unit around the concept of oceans. Reading, Math, Science and Social Studies activities revolve around an ocean theme. In Part 5, students work on...

Extensive site for teachers provides some helpful resources that pertain to plant and animal cells. Includes a microscope diagram as well as plant, animal and pond labs. Also contains links to structures and mechanisms, matter and...

Describes what relative humidity is, shows how it is calculated, and how it is related to evaporation and condensation.

NOVA explores the basic principle of buoyancy. Also included at this site are some interesting brain-teasers related to the topic.