Sarah Ruah

[Sarah Ruah @RuahSarah]

@jasminelabelle4 Yes, same here! Very interesting

[Sarah Ruah @RuahSarah]

@thuwaaraha Very interesting, thanks for sharing!

[Sarah Ruah @RuahSarah]

I was surprised as well, not gonna lie!!

[Alexie @Alexie66647331]

am i the only one that didn't know that a conventional lightbulb is only 5% efficient ?? #Lesson9 #Appliances #Lighting 💡💡

[Sarah Ruah @RuahSarah]

Great tip! Thanks for sharing!

[prokoshsarah @prokoshsarah]

Tip: Use motion sensors for outdoor light so they only turn on when needed #cutback #SaveEnergy

[Sarah Ruah @RuahSarah]

Carbon Monoxide (CO) can have a significant impact on human health. It enters the bloodstream through the lungs and forms carboxyhemoglobin #Lesson10 #GlobalEffects

[Sarah Ruah @RuahSarah]

There are many industrial activities which are very important when considering water pollution, such as agriculture, mining, urban pollution, human waste, factory production and many others... #Lesson10 #WaterPollution

[Sarah Ruah @RuahSarah]

Pollutants are substances, produced through human activities, that have undesirable effects, including effects on human health and wellbeing, animal welfare, plant life and the environment
#Lesson10 #AirPollutants

[Sarah Ruah @RuahSarah]

Most of our serious air pollution is produced either directly or indirectly by the combustion of fuels #Lesson10 #Pollution

[Sarah Ruah @RuahSarah]

@Phys273Lea That’s crazy! Such a low percentage!

[Sarah Ruah @RuahSarah]

@HanZhan87100821 Wow I had no idea! Thanks for sharing

[Sarah Ruah @RuahSarah]

@mario_phys I was surprised as well! Would’ve thought the contrary!

[Sarah Ruah @RuahSarah]

@AlexvincelliP I had no idea! Super interesting

[Sarah Ruah @RuahSarah]

Energy Efficiency can be referred to as the fraction of energy used that is transformed into the useful energy we want #lesson9 #EnergyEfficiency

[Sarah Ruah @RuahSarah]

Lighting tip: Use motion sensors for outdoor lights so they only turn on when needed! #Lesson9 #Lighting

[Sarah Ruah @RuahSarah]

Heat Transfer:
- In the winter, your house “wants” to
cool off to outside temperature
- In the summer, you house “wants” to
warm up to outside temperature
#Lesson9 #Heating

[Sarah Ruah @RuahSarah]

Reminder: Energy Conservation should not be confused with the Law of Conservation of Energy, which states that total energy of an isolated system is constant #Lesson9 #EnergyConservation

[Sarah Ruah @RuahSarah]

@KimberleyThull1 So interesting! I was not aware of that, thanks for sharing!

[Sarah Ruah @RuahSarah]

@banat273 @khali273 Hahah good one😂

[Sarah Ruah @RuahSarah]

@ElioPiccolino Yes! I completely agree with that

[Sarah Ruah @RuahSarah]

@mario_phys I was very surprised to learn that as well!