NSDL teaching resources related to “release”

This activity has students explore the carbon cycle and learn to identify carbon sources, sinks, and release agents. They will come to understand that carbon is critical to the biosphere and must continue cycling to support life on earth. The instructor guide contains detailed background material, learning goals, alignment to national standards, grade level/time, details on materials and preparation, procedure, assessment ideas, and modifications for alternative learners.

What is the Carbon Cycle?

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This lesson presents an overview of phenomena related to the magnetism of the Sun, in particular to sunspots and their 11-year cycle, solar flares and magnetic disturbances on Earth caused by solar activity. It also reviews briefly the connection between electricity and magnetism. Students will learn facts about the discovery of sunspots, their intense magnetism, and their 11-year cycle. They will be introduced to solar activity associated with sunspots and their cycles, e.g. the abrupt brightenings known as solar flares.

The Magnetic Sun

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This page explains the process by which oxides of sulfur and nitrogen, released by the combustion of fossil fuels, combine with water in the atmosphere to form acid rain. It points out that human activities are the primary cause of acid rain, that power plant and vehicle emissions are the primary sources of acid-producing compounds, and that acidity may be increased or neutralized by reactions in the environment. Links to a glossary are embedded in the text.

What Causes Acid Rain?

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This lab aims to teach students about the nature of carbon, the different types of compounds it exists in (e.g. charcoal, glucose, carbon dioxide), the biochemical reactions it takes part in (photosynthesis and respiration), the range of processes that carbon and carbon compounds are involved in on Earth, and how these link together to form the carbon cycle. In this activity, carbon dioxide is released from some chalk (calcium carbonate) by mixing it with vinegar (a solution containing a weak acid).

Carbon Cycle: Releasing Dinosaur Breath in the Lab

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