A guide to the energy of the Earth - Joshua M. Sneideman

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Energy is neither created nor destroyed — and yet the global demand for it continues to increase. But where does energy come from, and where does it go? Joshua M. Sneideman examines the many ways in which energy cycles through our planet, from the sun to our food chain to electricity and beyond.

Lesson by Joshua M. Sneideman, animation by Marc Christoforidis.

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When you here because of online school and you have been working on it for hours and you are struggling to do it on time

benmiller

Okay everyone.... Be honest you're here because of online school right?

ancient

200, 000 views WOW - amazing - thanks for watching y'all

JoshAsks

ted ed...

you are a growing but big channel with so mucke knowledge. you have taught me about many new facts since 2016. you helped me in many questions and made me love science. hope you never stop this.

special thanks to you...

abdelr

For the people that got sent here by teachers and also look at the transcript, I copied most of it from there. Like everything from the transcript.
Notes:
- Energy is a physical quantity that follows precise natural laws. It is neither created nor created and takes different forms such as kinetic or potential energy.
- Earth Physical Systems; the atmosphere, hydrosphere, lithosphere, and biosphere. During any energy transfer between them, some are lost to their surroundings. As heat, light, sound, vibration, or movement.
- Our planet's energy comes from internal and external sources. Geothermal energy from radioactive isotopes and rotational energy from the spinning of the Earth are internal sources of energy.
- While the Sun is the major external source, driving certain systems, like our weather and climate. Sunlight warms the surface and atmosphere in varying amounts, and this causes convection producing winds and influencing ocean current.

The Sun is also the major source of energy for organisms.
~ Infrared radiation, radiating out from the warmed surface of the Earth, gets trapped by greenhouse gases and further affects the energy flow. ~
- We release this food energy using chemical reactions, like combustion and respiration. We release this food energy using chemical reactions, like combustion and respiration. At each level in a food chain, some energy is stored in newly made chemical structures, but most are lost to the surroundings, as heat, like your body heat, is released by your digestion of food.

- Coal, oil, and natural gas, which contain energy that plants captured from sunlight long ago and stored in the form of carbon. When we burn fossil fuels in power plants, we release this stored energy to generate electricity. To generate electricity, heat from burning fossil fuels is used to power turbines that rotate magnets, which, in turn, create magnetic field changes relative to a coil of wire, causing electrons to be induced to flow in the wire.
- Electrons can also be induced to flow by direct interaction with light particles, which is how a solar cell operates. Other renewable energy sources, such as wind, water, geothermal, and biofuels can also be used to generate electricity.

Finishing note: Global energy demand is increasing, but the planet has limited energy resources to access through complex energy infrastructure. As populations rise, alongside rates of industrialization and development, our energy decisions grow more and more important. Access to energy impacts health, education, political power, and socioeconomic status. If we improve our energy efficiency, we can use our natural resources more responsibly and improve the quality of life for everyone.

Sugar-rrdt

God is energy, and energy is our god. The human soul is nothing more than pure energy, and through it the gods speak to us all. Dimentional entity consisting of energy. If you think about it when you pray, all you're doing is projecting your thoughts, via the soul, to the gods. Though as energy they power your every movement, the idea behind it is your own free will. If this makes sense to anyone else we can talk about it.

ctuesburgable

after watching this, I realized I really didn't understand what energy was all along until now

silvahawk

This is very knowledgeable and eye-opening makes me think about the reason we're trying to go to space is probably to find a new source of energy it's why we bring back all those moon rocks

milesmorales

Really well done video. I will be showing this to my 6th graders today as part of our unit on renewable and non-renewable energy sources. This video was great in explaining things very simply. Yes, I do wish nuclear energy and hydrogen fuel cells were mentioned. A possible video idea in the future would be to make a video on all the renewable and non-renewable energy sources and the pros and cons of each. Thank you again for a great educational piece. Kudos!

bradturnow

I binge watch more ted-ed than Netflix and Apple+ combined!

oWxrp

i had to watch this because of online school. very helpful.

savmasya

So the secret to gain the most energy is to eat grass..

JJ-zrwf

This video looks so nice explaned like that, it's different from our social reality. ❤👏

freeridetony

2:58 fracking
3:05 but fossil fuels are used to power our transport, for heating and cooking, to produce plastics, cosmetics, medicines, and other chemicals too.

TheMwit