Phase Change
EXPLORE! Solar System
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Weather Stations: Phase Change

Correlations to National Science Education Standards

Grades K–4
Physical Science – C
ontent Standard B
Properties of Objects and Materials

  • Materials can exist in different states—solid, liquid, and gas. Some common materials, such as water, can be changed from one state to another by heating or cooling.

Earth and Space Science - Content Standard D
Changes in the Earth and Sky

  • Weather changes from day to day and over the seasons. Weather can be described by measurable quantities, such as temperature, wind direction and speed, and precipitation.

Grades 5–8

Earth and Space Science - Content Standard D
Structure of the Earth System

      • Water, which covers the majority of Earth's surface, circulates through the crust, oceans, and atmosphere in what is known as the "water cycle." Water evaporates from Earth's surface, rises and cools as it moves to higher elevations, condenses as rain or snow, and falls to the surface where it collects in lakes, oceans, soil, and in rocks underground.
      • The atmosphere is a mixture of nitrogen, oxygen, and trace gases that include water vapor. The atmosphere has different properties at different elevations.


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