Still Chap 9 but its energy Flashcards
If a cyclist accelerates down a slope ( higher to lower ), how does their energy change?
GPE: Decrease
KE: Increase
Why would the total energy possessed by the ball decrease while rolling down a rough hill?
Since friction is present, there is energy lost/ transferred to the surroundings as heat and sound energy.
What are the environmental impacts of Solar Energy
Does not release air pollutants and greenhouse gases (positive)
Toxic waste is produced when producing and disposing solar panels ( negative )
What are the environmental impacts of Hydroelectric Energy
Releases little air pollutants and greenhouses gases ( negative )
Flooding area behind dams kills plants and forces animals to move to other areas. (negative)
Can be used for recreational water activities. ( positive )
People who make a living by fishing are forced to relocated futher inland. (neg)
What are the environmental impacts of Wind energy
Does not release air pollutants and greenhouse gases
Clearing large areas of land destroys the habitats of wildlife and affects the diversity of species
Noise pollution
What are the environmental impacts Geothermal Energy
Does not release air pollutants and greenhouse gases
Clearing large areas of land destroys the wildlife and affects the diversity of wildlife
Toxic elements underground are drawn out
What are the environmental impacts of Biofuels
Burning of biofuels releases greenhouse gases such as carbon dioxide into the atmosphere
BUT** carbon dioxide is taken in by plants grown
Reduces and recycle food waste
What are the environmental impacts of Nuclear energy
Does not release air pollutants and greenhouse gases
Requires less space and land
Requires proper disposal and storage of nuclear waste. Nuclear leakage and accidents can pose risk to health. Harmful effects of nuclear radiation include cancer.
