This activity is a demonstration proving that carbon dioxide is more dense than air which leads to a deeper understanding of the term density.
This resource is a video abstract of a research paper created by Research Square on behalf of its authors. It provides a synopsis that's easy to understand, and can be used to introduce the topics it covers to students, researchers, and the general public. The video's transcript is also provided in full, with a portion provided below for preview:
"All living things need phosphorus to survive. However, its low availability in soil is often a limiting factor for plant and microbial growth. Microorganisms in the plant root-soil interface (rhizosphere) can convert non-labile phosphorus into bioavailable forms. One way microbes do this is the mineralization of organic phosphorus compounds like phytate. Rising atmospheric CO₂ levels may accelerate mineralization, but the molecular mechanisms are not yet understood. Recent research confirmed that elevated CO₂ (eCO₂) increased the mineralization of phytate in the rhizosphere of wheat. Tracing the carbon flow showed that plants grown under eCO₂ increased the release of bioavailable carbon belowground, which corresponded to increased microbial growth and altered community composition. The bacterial community under eCO₂ favored groups of bacteria capable of degrading aromatic phosphorus compounds and the mycorrhizal fungi benefited from the increased supply of phosphorus and carbon..."
The rest of the transcript, along with a link to the research itself, is available on the resource itself.
Rising greenhouse gas (CO2, methane) levels due to carbon-intensive human activities since pre-industrial times have resulted in an increase in the Earth’s surface temperature, which is known as global warming. Global warming is causing climate change and resulting in harmful impacts on humans and our environment. Climate change is an urgent problem. We have the tools and solutions to tackle climate change, but implementation remains a huge challenge.
Energy and the environment are inextricably linked. Delivery of energy services (what humans want) is the leading source of greenhouse gas emissions, and our energy resource use affects water, land, and wildlife as well. All energy resources have environmental impacts, but some, namely fossil fuels, have more impacts than others.
The negative impacts of energy resource use disproportionately affect low income communities and communities of color in the US and globally. As our population grows and energy access increases, it is important to figure out how we will deliver energy services sustainably and in a way that addresses inequities in environmental impacts.
Also known as red blood cells (RBCs). Erythrocytes deliver oxygen to, and remove carbon dioxide from tissues. Erythrocytes are derived from the stem cell (CFU-GEMM) and formed in a process known as erythropoiesis.
This resource is a video abstract of a research paper created by Research Square on behalf of its authors. It provides a synopsis that's easy to understand, and can be used to introduce the topics it covers to students, researchers, and the general public. The video's transcript is also provided in full, with a portion provided below for preview:
"Left unchecked, excessive CO₂ emissions have the potential to significantly warm the planet in the coming decades. One way to curb this trend is to develop more efficient power electronics, which can channel electricity from clean energy sources to the global grid, with minimal energy losses. A new study reports one device that could help make this clean future a reality. Losses in traditional power electronics can be traced to the relatively sluggish movement of the charge carriers that carry current through them. That translates to slow switching speeds and overall inefficient device performance. This new device takes advantage of a phenomenon called bulk conduction, where charge carriers are generated (in this case, with light) and controlled nearly simultaneously throughout the device. Results showed that the device, made from silicon carbide, could perform 6 times faster than existing solid-state devices. That speed improvement alone could help reduce global CO₂ emissions by more than 10%..."
The rest of the transcript, along with a link to the research itself, is available on the resource itself.
Fundamentals of Ammonia Synthesis is a meticulously designed resource that was written to provide both students and educators with an amazing learning experience.The topic is structured into five captivating lessons, each carefully designed to understand the complexity of ammonia production. Beginning with the first lesson where we studied the process steps involved in ammonia synthesis, to lesson two where we explored the concept of Synthesis gas production by steam reforming with emphasis on natural gas reforming. In lesson three we analyzed the various operating variables that influence the production of synthesis. In lessons four and five we studied the purification of synthesis and how it is used for the production of ammonia. Each lesson comes with a quiz to reinforce what was learned.Our resource doesn't just serve as class notes; it's a gateway to a deeper understanding of chemical engineering principles. Whether you're a student seeking to grasp the fundamentals or an educator looking to enrich your teaching arsenal, "Fundamentals of Ammonia Synthesis" promises an enriching educational journey filled with insight, discovery, and practical application. Join us as we unlock the secrets of ammonia synthesis and pave the way for a brighter future in chemical engineering.
Global Global warming is primarily a problem of too much carbon dioxide (CO2) in the atmosphere which acts as a blanket, trapping the heat and warming the planet.
Revised for Human Gas Exchange and simplified somewhat.By the end of this section, you will be able to:Name and describe lung volumes and capacitiesUnderstand how gas pressure influences how gases move into and out of the body
Have you seen a Clean Coal baseball cap? In the challenge to meet soaring energy demand with limited resources, volatile issues like those related to the environment, national security and public health are often addressed outside of normal market transactions and are called externalities, or nonmarket factors. Stakeholders can act in resourceful ways to create a nonmarket environment that best serves their interest. A firm may challenge a law that makes it expensive or difficult to do business or compete with others, for example. An individual may organize a boycott of products or services that violate the individual's interests or principles--hey, don't buy from them! Nonmarket strategy in the energy sector is the subject of this engaging course.
This resource provides a basic introduction to the greenhouse effect, global warming, and climate change. It is aimed roughly at undergrad classrooms (which is where I have taught), but it's also suitable for high school teachers, lifelong learners, climate change outreach, etc., and can be used for 'just in time' professional development by everyone.
Students observe demonstrations, and build and evaluate simple models to understand the greenhouse effect and the role of increased greenhouse gas concentration in global warming.
Students learn about material balances, a fundamental concept of chemical engineering. They use stoichiometry to predict the mass of carbon dioxide that escapes after reacting measured quantities of sodium bicarbonate with dilute acetic acid. Students then produce the reactions of the chemicals in a small reactor made from a plastic water bottle and balloon.
Through an overview of some of the environmental challenges facing the growing and evolving country of China today, students learn about the effects of indoor and outdoor air pollution that China is struggling to curb with the help of engineers and scientists. This includes the sources of particulate matter 2.5 and carbon dioxide, and air pollution impacts on the health of people and the environment.
In this 8th grade science lesson, students prepare Soft Pretzels. While the pretzels bake in the oven, students activate yeast and observe the production of carbon dioxide, which causes the Soft Pretzels to rise.
Students observe demonstrations, and build and evaluate simple models to understand the greenhouse effect, the role of increased greenhouse gas concentration in global warming, and the implications of global warming theory for engineers, themselves and the Earth. In an associated literacy activity, students learn how a bill becomes law and research global warming legislation.
This unit covers the processes of photosynthesis, extinction, biomimicry and bioremediation. In the first lesson on photosynthesis, students learn how engineers use the natural process of photosynthesis as an exemplary model of a complex yet efficient process for converting solar energy to chemical energy or distributing water throughout a system. In the next lesson on species extinction, students learn that it is happening at an alarming rate. Students discover that the destruction of habitat is the main reason many species are threatened and how engineers are trying to stop this habitat destruction. The third lesson introduces students to the idea of biomimicry or looking to nature for engineering ideas. And, in the fourth and final lesson, students learn about a specialty branch of engineering called bioremediation the use of living organisms to aid in the clean up of pollutant spills.
In this short demo/activity, a balloon with baking soda in it is stretched over the mouth of a flask or bottle containing vinegar. The balloon is tipped so that the baking soda falls into the vinegar, and the reaction creates carbon dioxide, which inflates the balloon. The activity is part of the children's book, The Air We Breathe.
This course is an introduction to chemical oceanography. It describes reservoir models and residence time, major ion composition of seawater, inputs to and outputs from the ocean via rivers, the atmosphere, and the sea floor. Biogeochemical cycling within the oceanic water column and sediments, emphasizing the roles played by the formation, transport, and alteration of oceanic particles and the effects that these processes have on seawater composition. Cycles of carbon, nitrogen, phosphorus, oxygen, and sulfur. Uptake of anthropogenic carbon dioxide by the ocean. Material presented through lectures and student-led presentation and discussion of recent papers.
Lessons teach core knowledge about the science of climate change, explore conflicting views, and integrate critical thinking skills. Students will apply knowledge of climate change to a rigorous analysis of media messages through asking and answering questions about accuracy, currency, credibility, sourcing, and bias. Lessons address basic climate science, the causes of climate change, scientific debate and disinformation, the consequences of global warming, the precautionary principle, carbon footprints, moral choices, and the history of global warming in media, science, and politics.