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WorksheetsEnv Sci CA 4 Week 9 Review. Renewable Energy, Recycling, EPA
Total questions: 20
Worksheet time: 10mins
What two sources of renewable energy have been growing the fastest over the past decade?
hydroelectric and coal
wind and solar
biomass and geothermal
Even though solar has grown the fastest of all renewable sources, it still only accounts for ______ percent of the nation's total energy production (2018)?
1%
33%
60%
Solar panels work as light's photon particles hit a silicon cell, knock an electron from its bond, & cause movement of electrons through a circuit.
So, do any parts inside the solar cell get worn out or used up?
yes, solar panels internally break down often
no, solar panels can last for decades
Would it be possible to power the entire world with today's solar technology (assuming funding was available for infrastructure and there were ways to obtain sunlight on cloudy days)?
Yes, the earth intercepts 10,000 x more solar power than the planet's population uses
No, there isn't enough light from the sun to provide power for every country
If wind blows twice as quickly as usual, there is how many times more energy available for a wind turbine to harvest?
3x
1x
8x
True or false: A gentle breeze is often enough to make the blades of a wind turbine spin?
true
false
Can you link many windmills together into a wind farm and link wind farms into an international power grid?
no, they can not be connected
yes, this helps overcome the unpredictability of wind
What type of renewable energy source is the most energy efficient, cost effective, and environmentally clean system for TEMPERATURE CONTROL in the home?
wind
hydro
geothermal
What geographic regions is geothermal energy confined to?
places closer to the equator which receive more warmth from the sun
near tectonic plate boundaries where earthquakes and volcanoes concentrate
Areas with water moving quickly through a confined space and underground water sources
Which of these options is the most reliable energy source (runs 24 hours a day)?
geothermal
wind
solar
Do reservoirs behind dams collect dead plant matter as the water level rises, creating methane?
no, dams are 100% methane free
yes, this is one of the biggest challenges with hydropower
___________ energy refers to energy made from living or recently living plants. The plant material can undergo combustion, gasification, pyrolysis, or other processes to create energy fuels, such as syngas or ethanol?
Mechanical
Biomass
Petroleum
Some issues with biomass include health concerns from burning feedstocks without ventilation, CO2 output, deforestation, and _____________________?
cropland degradation
46% efficiency of machines
its inconsistency
Prices for solar panels are ________ than ever today?
the same
higher
lower
Lithium ion batteries are abundant but can not store more than 4 hours of energy at a good price point.
Thus, we've come up with alternative energy storage possibilities such as:
Copper batteries, babylon batteries, turbine energy, lead batteries, solar panels
flow batteries, thermal batteries, and the potential energy of pumped uphill hydro & stacked heavy bricks
What are the chemicals in some sunscreens that can get into waterways and harm marine life?
oxybenzone, benzophenone, PABA, benzylidene camphor, octinoxate, octocrylene
titanium oxide, zinc oxide (non-nano), ocimum teniforum, magnesium aluminum silicate
Can ocean waves and tides be used to create energy?
yes, they can
no, they can't
What were some of the most well known events spurring the creation of the EPA?
Community Right to Know Act, Clean Air & Water Acts
Montreal Protocol, Typhoon response, Kyoto Protocol, Paris Agreement
Cuyahoga River Fire, New York Smog, Santa Barbara Oil Spill
The EPA has helped reduce greenhouse gasses by 67% and reduced vehicle emissions by about ______ %?
30%
90%
50%
About when did single use plastic become widely available?
in the early 1900s
in 1800s
after world war II
