Have students recall some of the things in their daily lives that contain carbon. Make a list of these items on the board. The carbon atoms move from one thing to another in what is called the carbon cycle. Parts of the carbon cycle happen very quickly, like when plants take in carbon dioxide from the atmosphere for photosynthesis. But, other parts of the carbon cycle happen very slowly.
Tell students that in this activity, they will learn how carbon moves from one place to another, by performing a carbon cycle role-play.
Explain that they can give their carbon to only one other group, or if they have plenty, they can give the carbon to more than one group. Explain that carbon exists in all of these things at the same time and only a portion of the carbon in each thing moves.
As they move their carbon, they must say their script lines to explain the carbon movement that they have chosen. Humans extract and burn fossil fuels for energy carbon moves from the sediments and rocks where fossil fuels are buried into the atmosphere. Humans cut and burn trees to use land for farming, ranching, or building carbon moves from the land plants into the atmosphere.
Burning fossil fuels takes carbon from sediments and rocks where fossil fuels are buried and puts it into the atmosphere because when fossil fuels are burned they release carbon-containing gases. Cutting and burning trees takes carbon from the land plants and puts it into the atmosphere because when trees are burned, the carbon that was stored in their structures is released as carbon-containing gases.
Assessment Boundary: If you are working towards Performance Expectations 5-LS or MS-LS or HS-LS regarding developing a model to describe the movement of matter among living and non-living parts of an ecosystem , remember that students are not expected to demonstrate understanding of molecular movement or describe the process using chemical reactions.
The emphasis for middle school is on the geologic process of the rock cycle, and the emphasis in high school is on how biogeochemical cycles that include the cycling of carbon through the ocean, atmosphere, soil, and biosphere including humans , provide the foundation for living organisms. Carbon is an important element for life on earth and can be found in all four major spheres of the planet: biosphere, atmosphere, hydrosphere, and lithosphere the rigid, rocky outer layer of the earth.
Carbon is found in both the living and non-living parts of the planet, as a component in organisms, atmospheric gases, water, and rocks. The carbon moves from one sphere to another in an ongoing process known as the carbon cycle.
Besides the relatively small additions of carbon from meteorites, the total carbon on Earth is stable. But, the amount of carbon in any given sphere of the planet can increase or decrease depending on the fluctuations of the carbon cycle. The cycle can be thought of in terms of reservoirs places where carbon is stored and flows the movement between reservoirs. Although carbon is relatively common on earth, pure carbon is not. Carbon is usually bound to other elements in compounds. Thus, the carbon cycle, includes many carbon-containing compounds, such as carbon dioxide, sugars, and methane.
The many processes that move carbon from one place to another happen on different time scales. Some of them happen on short time scales, such as photosynthesis, which moves carbon from the atmosphere into the biosphere as plants extract carbon from the atmosphere. Some carbon cycle processes happen over much longer time scales. For example, when marine organisms with calcium carbonate skeletons and shells die, some of their remains sink towards the ocean floor.
There, the carbon that was stored in their bodies becomes part of the carbon-rich sediment and is eventually carried along, via plate tectonic movement, to subduction zones where it is converted into metamorphic rock. These two examples show the extreme variety of processes that take place in the carbon cycle. In general, the short-term carbon cycle encompasses photosynthesis, respiration, and predator-prey transfer of carbon.
On land, there is a flow of carbon from the atmosphere to plants with photosynthesis and then a flow back to the atmosphere with plant and animal respiration and decomposition. For aquatic plants, photosynthesis involves taking carbon from carbon dioxide dissolved in the water around them. Carbon dioxide is also constantly moving between the atmosphere and water via diffusion.
The long-term carbon cycle involves more of the lithospheric processes. It includes the weathering and erosion of carbon-containing rocks, the accumulation of carbon-rich plant and animal material in sediments, and the slow movement of those sediments through the rock cycle. Your rating is required to reflect your happiness. It's good to leave some feedback. Something went wrong, please try again later. Empty reply does not make any sense for the end user.
I used this resource with my grade 9 applied science class. Really easy for the students to follow along and generated interest and discussion. Lesson Duration 50 minutes. MS-ESS Develop a model to describe the cycling of Earth's materials and the flow of energy that drives this process.
Tags Nitrogen Cycle. Instructional Strategies Modeling. Download this page PDF. Purpose Students will explore the Nitrogen Cycle by modeling the movement of a nitrogen atom as it passes through the cycle. Learning Objectives Students will understand how nitrogen moves between reservoirs and is constantly recycled. Students will be able to identify nitrogen reservoirs.
Students will understand the importance of nitrogen as it relates to Earth as a system and as it relates to you personally. Students will understand that nitrogen travels freely between physical aspects of Earth and living things.
Essential Questions What parts of Earth need nitrogen? What are some of the processes that help move nitrogen through from one reservoir to another? What are some ways that humans can make an impact on the nitrogen cycle? Procedure Discuss nitrogen with your class.
Where is nitrogen found on Earth? Why is it important? What are some processes that help move nitrogen through the cycle? Begin by looking at the slide showing the different reservoirs. What are some reservoirs that surprise your students?
Explain to students that by the end of the game they should be able to address the following questions: What parts of Earth need nitrogen? Next, model for students how to click on the sphere icon to move between reservoirs throughout the game. Read the game instructions with the students. Students will model a nitrogen atom. They will roll a virtual dice or physical one found in common games to determine the trajectory the atom takes. Roll Google dice or other die to determine which center you will go to first.
Locate this icon on the Nitrogen Reservoirs Slide and click on the hyperlink. This will take users to the first of two sequential slides that provide information that they will document in their response sheet Form or other.
Resource is very text-rich within the source and sink information boxes. This may be a challenge for English language learners.
This content is available in Flash format only. Page contains instructions for iPad use and instructions for enabling Flash in your web browser.
Getting to the bottom of ocean carbon export. Greenhouse Gas Concentrations - Graphing Tool.
0コメント