Filters: Your search found 44 results.
Topics/Subjects:
Physical sciences  
Materials Cost:
$1 - $5  
SMD Forum - Primary:
Earth Science  
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Now showing results 21-30 of 44

This activity has two purposes: challenge the learner to develop a procedure for investigating a research question and to learn more about factors affecting the dynamics of air in motion. It demonstrates that warm air and cold air differ in weight... (View More)

This experimental activity is designed to develop an understanding that air has mass. Students conduct an investigation and observe the change in the position of a bar balancing a balloon inflated with air on one end and a uninflated balloon on the... (View More)

This experimental activity is designed to develop a basic understanding of the interrelationship between temperature and pressure and the structure of a device made to examine this relationship. Resources needed to conduct this activity include two... (View More)

This activity promotes student understanding of some of the movements that take place when warmer water and cooler water interface, and how differences in densities, resulting from variations in temperature, set molecules of liquids and gases in... (View More)

This experimental activity is designed to develop basic understanding of the relationship between the angle of light rays and the area over which the light rays are distributed, and the potential to affect changes in the temperature of materials.... (View More)

In this demonstration, students detect the interference of waves and measure wave phenomena using an experimental apparatus consisting of a laser pointer, a second surface mirror scrap (like a bathroom mirror) binder clips, razor blade, ruler, and a... (View More)

Audience: Middle school
Materials Cost: $1 - $5 per group of students

This learning activity engages students in measurement of pH in water and soil samples, plants and other natural materials. By mixing different substances, they observe how pH changes, and become familiar with the pH of common household products.... (View More)

Using three flashlights and sheets of red, blue and green cellophane, students demonstrate that white light is composed of colored light of different wavelengths. The resource is part of the teacher's guide accompanying the video, NASA Why Files:... (View More)

In this activity, teachers set up five stations to provide students an understanding of light refraction, using water, microscope slides, beakers, a coin, and eyedroppers. Students rotate through the stations and record their observations on a data... (View More)

In this kinesthetic activity, students observe the relationship between energy and the frequency of waves transmitted through a rope. A rope and a slinky are used in this activity. The resource is part of the teacher's guide accompanying the video,... (View More)