Find out how many calories people need to eat per day.  The video discusses what calories actually are, how your body burns them, and the relationship between activity level and calorie intake.

Demonstrate how magma is more buoyant than the surrounding earth material.  Volcanoes erupt simply because the melted rock rises up through cracks in the crust.  This science experiment will easily demonstrate this concept.

Here is a quick video animation that demonstrates how Phagocytosis gets rid of bacteria from in the body.  

This volcano video demonstrates and discusses how composite and shield volcanoes are created and describes their lava type.  The Ring of Fire and magma formation are briefly discussed.

This animated and narrated video demonstrates how a flu virus exits one person and enters another.  Then it visually describes how the virus will be welcomed into a cell where it will replicate its DNA.  There is a great part that shows some Phagocytosis as your body tries to destroy the virus.

This video demonstrates a science experiment on the formation of calderas.  The idea is great.  Either show the video or demonstrate the formation with your students.

MinuteEarth, a youtube channel demonstrates how a river goes from straight to meandering.  Learn some basic concepts of erosion, deposition, and stream formation in this video.  This science video also talks about river landforms.

The TED video is a feature of Sam who has Progeria, a genetic disorder that causes children to take on appearances of old age.  This would be a great video to show biology students during your unit on genetics.  Also, it would be great just to show a class how somebody with health issues can still be successful and happy.

Looking for an informative video about geothermal energy? Look no further than this fascinating 10-minute video from EducationalResource.org! In this video, students will learn all about how California is producing energy through the use of geothermal power plants. The video explores the science behind geothermal energy, discussing how it is collected and where it comes from.

This video discusses how scientists are taking plants and creating fuel and energy with it.  Biological concepts are also taught about breaking down cellulose and harnessing the sugars that can then be turned into biofuel through the process of fermentation.