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Radioactivity

15 minutes, 37 seconds

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Videos are generally available for preview to non-members as short clips. Limited full-length titles are also available. Log In to view the full length title.

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Multiple images showing a progression of yellow to red circles appearing on a dark background. Caption: Then, a series of images are collected at regular intervals.

Radioactivity is all around us and comes from a variety of sources. There are three types of radiation, and experiments show the differences in the penetrating power of each one. A major use of radioactivity is in nuclear medicine. Discusses the half-life of radiation and how to calculate it.

Media Details

Runtime: 15 minutes, 37 seconds

Topic: Science
Subtopic: Chemistry
Grade/Interest Level: 10 - 12
Standards:

Release Year: 2001
Producer/Distributor: Benchmark Media
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Lights and gauges with display screens cover the walls. Illustration of energetic reaction drawn on top. Caption: it releases a lot of energy in the form of heat.

Arched pH scale with warm colors on the left and cool colors on the right. Text in the foreground reads, “Acids and Bases for Kids.”

Person in a science lab. One beaker contains an orange liquid, and one beaker contains a green liquid. Caption: It's orange. That means its pH is 5.

Industrial plant from a distance. Caption: That's the world's largest PLA manufacturing plant.

Still image from: All the Answers: Flavor, the Octopus, Tar Pits

Still image from: All the Answers: Solar Eclipses, Microwaves, Death Valley

Still image from: All the Answers: Solar System, Light Bulb, Chemical Reactions!

Still image from: All the Answers: Tornadoes, Wind Energy, Batteries

People feeding dried hay to goats. Caption: How can we figure out how much energy is stored in this hay?

Three isotopes next to each other that are labeled, “Carbon-12, Carbon-13, Carbon-14.”