Energy is a physical quantity which obeys natural laws. This video will act as a guide for students about how energy moves through the systems on Earth. Since energy is neither created nor destroyed, our universe has finite amount of it. Earth gets its energy from internal (rotational and geothermal) and external sources (mainly sun). Sun powers our biosphere’s food chains. However, as humans, we not only need energy for our bodies, but also for other purposes such as travel, construction, and for powering electronics. For these purposes, we obtain energy from fossil fuels as well as from renewable energy sources, such as wind, water, geothermal, and sunlight. If we improve our energy efficiency, we can use our natural resources more responsibly and improve quality of life for everyone.
This video satisfies the 5-PS3-1 requirement of fifth-grade science proficiency.
Students who demonstrate understanding can: 5-PS3-1. Use models to describe that energy in animals’ food (used for body repair, growth, motion, and to maintain body warmth) was once energy from the sun.