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Convection Connections
For astronomers, watching convective cells of gas move on the surface of a distant star was kind of like looking at a lava lamp. Begin a unit on energy transfer by having students discuss lava lamps and the process of convection at work in them. Then have students read about the first observation of convection on a distant star and its potential scientific importance. Finally, students will brainstorm and diagram other examples of devices or natural processes that involve convection.
Green light means “go”
Just when we all thought we had evaporation all figured out, clever experiments shine a new light on old assumptions. A new study points to light having the ability to help sever bonds (a type of intermolecular force) between water molecules to boost evaporation. Learn how these findings support new scientific claims and challenge the old notion that light affects evaporation only indirectly, through heat generation.
Syncing the power grid to renewable energy
How is the U.S. doing in its transition away from coal-fired power plants to renewable energy sources? Analyze state and national data to learn about the transition and one of the major challenges: keeping the grid stable as large power plants shut down.
Not too hot. Not too cold
Staying cool in the summer and keeping warm in the winter may
become easier. Learn about a new thermal fabric prototype and its ability to regulate temperature,
answer questions about its design and function and discuss potential applications.
How Much Heat Can We Handle?
Summers are getting hotter. Use this guide to help students explore the science of heat and its effects on the body, and then apply what they learn through diagramming.
Too hot to handle
Heat waves are becoming more frequent around the globe, and scientists are studying humans’ ability to endure the extra heat. Get students thinking about what it means to handle heat and explore basic thermodynamic concepts through diagramming. Learning Outcomes: Diagramming
Ice cream under the microscope
Students will analyze and write a caption for microscope images of crystals in an ice cream–like solution, discuss how molecules behave as ice cream freezes and thaws, and pose scientific questions about one of their favorite frozen desserts.
The scoop on ice cream science
Students will answer questions about the online Science News article “Grainy ice cream is unpleasant. Plant-based nanocrystals might help,” which describes new research into improving the shelf life of ice cream. A version of the article, “Cellulose helps ice cream go down smooth,” appears in the May 7, 2022 & May 21, 2022 issue of Science News.
Rates and what affects them
Students will define rates and their units of measurement for biological and chemical processes before discussing factors that affect rates.
Octopus moms seek the heat
Students will answer questions about the Science News article “Some deep-sea octopuses aren’t the long-haul moms scientists thought they were,” which describes how octopuses laying eggs in warm waters near geothermal springs speed up hatching. A version of the article, “Deep-sea ‘octomoms’ seek the heat,” appears in the April 9, 2022 issue of Science News.
Chemistry of wildfire smoke
Students will answer questions about the online Science News article “Wildfire smoke may ramp up toxic ozone production in cities,” which explores new research into the interactions between wildfire smoke and air pollution in cities. A version of the article, “Wildfires may boost urban ozone levels,” appears in the January 15, 2022 issue of Science News.
Where there’s smoke, there’s science
Students will discuss the composition and properties of air and wildfire smoke, and explore how substances in smoke react to ramp up a certain type of air pollution.