Hail forms inside clouds when water droplets rise into air that’s below freezing, and freeze. In a thunderstorm, water droplets are lifted by an updraft to become ice. The longer the ice stays in the freezing air, the more layers of ice...

If you have ever torn up a piece of paper or seen ice melt, then you have witnessed physical changes. This fascinating program helps students understand some of the different ways matter changes physically. Vivid animations also...

What the heck is dry ice and why is it so spooky? Learn this and more when we investigate phase changes and phase diagrams!

An exothermic reaction gives off energy to the surroundings; like a fire giving off heat. An endothermic reaction takes in energy from the surroundings; like a snowman melting. Exothermic reactions transfer energy to the surroundings,...

The cycle of water from the air to the ground to the oceans and back to the air never ends. Water is found in the air, in the ground, in rivers and oceans, and it's found as gas, liquid, and solid. As it moves though phases and locations...

Upon viewing the The Changing Phases of Matter video series, students will be able to do the following: Explain that phases of matter, also called states of matter, are the physical forms matter can take. State the four phases of...

Everyday we use water. We drink water, use it to cook our food, and we use it to wash things. This video takes a look at the many important investigating water uses of water, while exploring its basic characteristics.

The cycle of water from the air to the ground to the oceans and back to the air never ends. Water is found in the air, in the ground, in rivers and oceans, and it's found as gas, liquid, and solid. As it moves though phases and locations...

This video provides a brief overview of the three major climate zones on Earth: tropical, temperate, and polar. It explains how these zones are determined by latitude and describes the typical weather patterns and temperatures in each...

Upon viewing the Weathering and Erosion video series, students will be able to do the following: Describe weathering as a process that involves the breaking down of rocks and other materials on Earth's surface. Differentiate between the...

The orbit of Earth on a tilted axis around the sun leads to the seasons. The resulting change of angle of the sun, and length of day controls how warm we get at different times of the year. With those changes in seasons come changes in...