GCSE Physics - Reducing Energy Loss - Insulation / Lubrication / Aerodynamics #6
ฝัง
- เผยแพร่เมื่อ 26 มิ.ย. 2019
- In this video we cover:
- How we reduce heat loss from homes
- How cavity walls work
- How double glazing works
- How to reduce friction using lubrication
- Why vehicles are streamlined
General info:
- Suitable for all GCSE and IGCSE courses
Exam board specific info:
AQA - Everything is relevant to your course!
IGCSE Edexcel - You also need to know about Sankey diagrams
Edexcel - You also need to know about Sankey diagrams
OCR 21st Century - You also need to know about Sankey diagrams
OCR Gateway - Everything is relevant to your course!
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If you’d like to practise the material covered in this video, check out our platform at www.cognitoedu.org - it's totally free, and has been built to make learning and revision as easy as possible. The main features are:
- Lessons organised by topic, only the lessons relevant to your specific exam board and tier are shown.
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Amadeus & Tom
BRO UR THE BEST SCINE TEACHER OUT THERE U R SOOOO GOOD OMG
This channel is really helping me in my end of yr exams, thank u sm
same
starting me gcse revision now! thank you 🙂
whoever has boards starting in feb, all the best 😊
Wait what
I know I’m the best 😅
@@ayaansanghavi5248get that ego down
@@SpicyRamen1466board exams are exams that happens in India I think
I have learned ... kinda a lot ngl great vid.Cheers
Great Advice From The Best Science TH-camr
gigachad
Cognito does maths as well btw
you are the best teacher
I couldn't be able to learn this at school for one whole year until now, just learn within 3 minutes.
Your videos are amazing, and are so simple to understand!
Good vid helped before exam
Thank you! Glad it was useful :)
Aujourdhui j’ai regardé un bonne video,bravo cognito c’etait beau et tres educatif.J’ADORE science.
im using this over my acc revision books bc this gives way more detail and also useful examples
You missed Loft insulation materials which can deduce the affect of convection. :)
I’ve told all my friends about you thx
tanks for just being help-full!
A real exam hero
great video
learned a lot
please do electromagnetism
Can you further explain more ways to stop emenergy loss like loft insulation etc.
0:53 is that a sam fisher reference? the cat in the window lol
why is there a raccoon in the house?
no way i did this in class and didnt understand now i know legit everything
We can make the house painted white right?
Thanks for the gift
Hi Cognito, why the title included Aerodynamics? I haven't understand what part of video talked about that, it is about the air gap?
The planes and the cars at the end mate
@@user-lf1mn6cj4e thank u man finally someone answer me after my IGCSE
@@xiayuanlong6950 lmfao
here the morning before the exam😀👌🏼
Hope it went well 🤞
underrated
thank you
1st
@haizys no need to be rude gosh! Plus ur here for a reason so clearly u do care
@haizys ik so but u don't need to say it if u don't have anything good to say don't say it
@haizys You say you don't care yet you invested the time to respond rudely. You're not only impolite, but you don't know what 'illiterate' means and you're contradictory.
did you do good in your GCSEs lol
You legend
Great
i should have been revising earlier man im cooked 💀
My physics exam starts tomorrow so of course I’m here getting some last minute revision
same
Double glazing contains an air gap- can’t that cause convection?
actually, most of the time it's filled with a noble gas like Argon which has the lowest convection.
what does convection and conduction mean any1
convection is when a heat source heats a certain part of a liquid or gas. The particles in this region gain kinetic energy because it has been heated, so the distances in between the individual gases expand, As they expand, this part of the gas/liquid becomes less dense, meaning it starts to float over the top of the part of the gas/liquid that has not been heated as much and is denser. This is also how radiators work. As the less dense air/liquid on top gets cooler, (because the energy in its thermal energy store has been transferred to its surroundings like walls), it moves back down again and replaces the newly heated part of the liquid/gas which creates a convection current.
Conduction is more common in solids. When you heated a certain part of a solid, the particles start to vibrate more and collide. These collisions transfer energy to the neighboring particles of the solid or other solids. Its harder for air to conduct because air already has lots of energy and is moving around a lot, it is harder for the energy to be transferred to its particles.
I hope this helped, or at least a little.
@@usu4095 :salute:
Add music to the background. Doesn't have to be loud.
ur here to revise why would u want music?
ay dayı mənə beş manat verginən ay dayı başuva dönüm! dayı yutub pulunan 5 manat verdə məne!
uwu ovo
E
Couldn’t have said it myself better
You spelt pedal wrong. It's meant to be p - e - d - a - l
correct observation: 'peddle' means try to sell (something, especially small goods) by going from place to place. you can understand why he might have spelt it like that, since he uses 'pedal' in the verb form i.e. he pedalled, not he peddled
don't act smart lmfao, you don't know anything