K-12 For Students

Carbon dioxide, or CO2, is bottled under pressure to create carbonated drinks. This carbonation creates the "fizziness" of these drinks. The carbon dioxide is dissolved in the liquid. When the...

Water distillation is used throughout the world to eliminate impurities from water and obtain pure and clean water that can be used for drinking or medical purposes. The process of distilling...

Solubility refers to highest amount of a dissolvable substance, also known as a solute, that can actually be dissolved in a given dissolving substance, also known as a solvent. In terms of science...

A small ocean can be created for a science experiment on tides and the marine environment. The supplies for ocean water are available at many local fish and pet stores, if the ocean itself is not...

If not in person, most people have seen the Old Faithful geyser in America's Yellowstone National Park on those television travel shows. Old Faithful is probably the best natural example of water...

The eye is an amazing organ. It works by focusing and bending light with the lens. When you look at an object, the light enters your eye through a convex lens that focuses the light to the back of...

Making a terrarium is an excellent way to demonstrate the way in which the water cycle works. It is also a good project for younger students since it requires very little watering; a closed...

This water purification system works through evaporation and condensation. Using the heat of the Sun (or a heat lamp), the water contained in whatever brackish, muddy liquid being purified...

Eliminate particles and other pollutants from your water with an easy, cheap water filtration project. Get in touch with nature by re-creating the natural process of filtering water through gravel...

Growing crystals is an excellent science experiment for children ages 8 to 12. It teaches children about saturation as well as how crystals form. The project can be completed in one day, but the...

Choose a science experiment that has a predictable visual result, is somewhat easy to accomplish and that is simple to explain to people. If you feel compelled to work on a complicated project, by...

The Great Flood of 1927 was one of the most powerful natural disasters of the 20th century. An inadequate levee system could not stop several weeks of torrential rainfall from submerging large...

An emulsifier is a surface-active agent that facilitates the mixing of two or more liquid substances that would separate into its component parts under normal conditions. Soap, for example, can...

Ocean waters circulate constantly due to a number of dynamic forces, from the Earth's rotation to the salt content of water.

Different types of water require different sampling techniques but share the same need for uniformity, safety and non-contamination of the sample. For example, when taking a sample of drinking...

According to renowned mathematician Archimedes, any object that is submerged in fluid is buoyed up by a force equal to the fluid that was displaced by the object. This simple principle explains...

Yeast is a single cell living organism that feeds on sugar. One gram of Baker's yeast contains over 25 billion live cells. Yeast is used to make bread rise. In 1857, Louis Pasteur discovered that...

When the Earth turns, there is a line that is exactly midway between the two turning points or poles. It is the equator, and it is the part of the planet that is most frequently pointed toward the...

Vitamins are molecules found in the food and liquid taken into the body. The chemical creates specific reactions once inside. Humans cannot create vitamins in their body, so the molecules and...

Floating an egg in a beaker of water is a classic science project that illustrates Archimedes' Principle. The buoyant force--the force making the egg float--is equal to the weight of the fluid the...

Science fair projects are a way for students to show they fully understand the scientific method by using four steps to complete an experiment. All scientific research, whether academic or...

From learning about polymers with homemade Silly Putty to creating an exploding volcano using baking soda and vinegar, hands-on science activities captivate young minds. Parents and teachers can...

It seems so simple: Ice is frozen water and will melt when exposed to warmer temperatures. Experiments with ice teach so much more. Kids can learn a lot about chemical properties such as freezing...

Bring the beauty of butterflies, moths, hummingbirds, and bees to your backyard by offering them dinner! Then they may stay and help pollinate a few flower during their visit. Keep a journal and...

Whether it is made in the clouds of the sky or in a laboratory, the basic structure of snow is always the same: Cold water condenses around particles of dust, salt or sand in the air. If the...

The rate of growth of mold is important to determining the urgency in action to save an affected area and stop germination. As mold can be both damaging to property and dangerous to human...

Land masses are constantly in flux. Positioned upon tectonic plates that make up the Earth's lithosphere, these land masses are affected by activity occurring below in the Earth's magma. Hot,...

Curiosity may have killed the cat, as the old saying goes, but human curiosity can initiate investigations into areas of science that can improve our lives, health, comfort and enjoyment....

Science fair projects are a great way for students to show their teachers that they fully understand the scientific method by using the four main steps to execute a successful experiment. All...

Efforts toward new green technologies have not only given people more environmentally conscious ways of living their lives, but they have brought new issues to popular science in a wide variety of...

If you fill a bottle partway with very hot water, then stretch a balloon over the top, the balloon will inflate slightly over the next few minutes. The same thing happens if you stretch a balloon...

A yearly science fair can be a fun and exciting time for students. In many schools, teachers allow their students to pick their own science projects. The students can choose anything that...

Choosing a science fair topic is sometimes harder than doing the project. Try to choose a project that you will enjoy, within the bounds of your teacher's requirements. There are some topics that...

It is often said that fire needs three things to burn: heat, fuel and oxygen. Flammable materials such as wood or gasoline have stored energy. When molecules of the flammable material are heated...

To produce potable water, there has to first be a water supply. Usually, we draw saltwater from the oceans or water from rivers. The majority of water treatment plants are located near oceans and...

Large bodies of water, particularly oceans, have a pronounced effect on the weather. They affect everything from land temperatures in coastal regions to rainfall totals and other weather conditions.

In chemistry, miscibility is the ability of two substances, usually liquids, to mix together in equal proportions to form a homogeneous product. Water is polar, carrying a negative charge at one...

A fossil mold is an outline or negative image of an animal, or occasionally a plant. Some fossil molds preserve a complete image of the organism, while others only show a part of it. Often, mold...

Brackish water is a mixture of salt water and fresh water. Brackish water occurs naturally where fresh and salt water mix, or where rivers empty into inland lakes. Brackish water has a range of...

Soda is made up almost entirely of water and a soda bottle explodes in the freezer because of the way water behaves. Most substances contract when they are cooled. Heat is molecular motion--the...

Buoyancy is the force that keeps objects floating on the water. It is a measure of how hard the water pushes up on the object. It is measured by the amount of water the object displaces (i.e.,...

Heat is applied to water. Through either boiling a tank of water with piping in place or running water through tubes being exposed to heat, liquid is evaporated and the steam is created. It runs...

Seventy percent of the earth is made up of water. Of this, 97 percent is seawater, which contains a significant amount of dissolved salts. Salt content is measured by the weight of salt in water....

Hydrogen gas can be used as an alternative fuel source. The byproduct of the hydrogen fuel cell process is plain water, which is much more eco-friendly than petroleum byproducts. Although some...

The movement of the water at the surface of the ocean is known as surface currents. These occur in a set pattern, with each one being named based on their location. These patterns are defined by...

Educate kids that environmental water quality can be affected even by people that don't live near the ocean. Explain the importance of water quality to children with tips from an experienced...

Liquids, solids and gases are the three commonly known states of matter. Liquid is unique in that it has a definite volume but no definite shape. The properties of liquids are generally the same...

When a ship enters the first (sea level) lock chamber at the Gatun Locks, on the Atlantic end of the Panama Canal, the lockmaster closes the watertight lock doors and opens a valve, allowing water...

Psychrometers use evaporation to measure humidity. When water evaporates, it cools the object it evaporates from. In low humidity, the air does not hold much water which makes it easy for water to...

A psychrometer is a device that measures relative humidity. When water evaporates it takes heat with it, cooling the wet object in the process. If it is humid, the water will not evaporate as...