NOAA
Please Pass the Salt
Salinity is the focus of two experimenters that work to answer the question, How does salt change the physical properties of water? Super scientists compare the freezing rate of salt and fresh water, combine the two waters to...
Curated OER
Ice Eggs
Students melt colored ice cubes which are created from a funnel, balloons, water, and food coloring. In this ice lesson plan, students put food coloring into water in a balloon, freeze it, and see how the food coloring ended up making...
Carnegie Mellon University
Introduction to Climate
Begin a full lesson on climate change by demonstrating how carbon dioxide gas contributes to increased temperatures. Be aware that pressure inside the antacid-containing bottle in Activity 2 may cause the lid to fly off; keep viewers at...
Curated OER
Fun in the Sun
Students freeze colored water. In this art lesson, students take the blocks of ice out of the freezer, put the blocks into a small pool and watch the ice melt.
Curated OER
Icy Sun Catcher
Students fill the tray half full with water. In this art lesson, students lay the string in the tray and add little bits of little items. Students lay the tray outdoors on a cold winter night so that the water freezes. What is frozen...
PBS
The Cat in the Hat Activity Exploring Weather
Observe different types of weather right in your classroom! Here, pupils look at clouds, rain, snow, wind, and hot and cold temperatures, and observe these weather patterns at school. They keep track of their observations in a worksheet...
American Chemical Society
The Energy of Evaporation
Do all liquids evaporate at the same rate? Young scientists observe the evaporation rate of three different liquids. They measure the time, the temperature, and the change in energy. After comparing the chemical formulas, scholars...
Texas Instruments
Texas Instruments: Freezing and Melting of Water
Freezing temperature, the temperature at which a substance turns from liquid to solid, and melting temperature, the temperature at which a substance turns from a solid to a liquid, are characteristic physical properties. In this...
University of Maryland
Lowering the Freezing Point of Water Using Salt
A page from the University of Maryland Physics Lecture Demonstration Facility. Provides directions for a teacher demonstration of the effect of an ionic solute upon the freezing point of water. Shows apparatus and set-up; provides...
Texas Instruments
Texas Instruments: How Low Can You Go?
In this activity, Students can use an EasyTemp temperature probe to determine the normal melting temperature of ice. They will then study how the addition of salt to the melting ice affects its melting temperature. They will finally...
TeachEngineering
Teach Engineering: What Is the Best Insulator: Air, Styrofoam, Foil, or Cotton?
That heat flows from hot to cold is an unfortunate truth of life. People have put a lot of effort into stopping this fact, however all they have been able to do is slow the process. Working in groups of three to four, students will...
PBS
Pbs Teachers: Rising Ice Experiment
Observe how ice and salt crystals interact by using salt to help adhere a string to the top of an ice cube in a glass of water, then lift the cube out of the water.