Chris asks…
Which process best shows the conversion of solar energy to chemical energy?
1. Prevailing winds causing windmills to spin
2. Green plants making their own food
3. Uranium producing heat to make steam
4. Tides generating electricity
admin answers:
Photosynthesis- number 2
Betty asks…
???any physics genius can solve this energy conversion????
energy conversions example:
1. mechanical –> chemical (strike a match)
2. electrical –> light (Light bulb)
3. gravitational –> mechanical (wrecking ball)
4. chemical –> heat (gas in car)
5. mechanical –> electrical (windmill)
Please do 5 more:
__________________–>_________________ (_______________)
__________________–>_________________ (_______________)
__________________–>_________________ (_______________)
__________________–>_________________ (_______________)
__________________–>_________________ (_______________)
admin answers:
Chemical–>electrical (discharging a battery)
electrical–>chemical (charging a battery)
chemical–>light (crushing crystals or a glowstick)
light–>chemical (photosynthesis)
light–>electrical (solar cell)
nuclear–>heat (exothermic fusion or fission reactions)
mechanical –> nuclear (supernova)
electrical–>mechanical (electric motor)
electrical–>heat (electric heater)
heat–>mechanical (engine)
mechanical–>heat (friction)
Ken asks…
Hey, I need help with energy conversions?
I’m in eighth grade and our homework is to name all the energy conversions of different objects…(Ex: A Windmill, Mechanical energy to electrical energy)
I am extremely confused for this project and it’s due tomorrow… I need:
PV Cell
Battery
Bicycle
Handwarmer
Lightstick
Flashlight
BBQ Grill
Car Engine
Sun
Fire-fly
Athlete
Firecracker
Any help would be appreciated, thanks(:
admin answers:
I am better to use non-renewable sources of energy more than renewable energy sources.
John asks…
Help with Energy Conversions?
I have an assignment that i need to show examples of energy conversion, I have to have a 1 step, 2 step, 3 step, and 4 step example. So 4 examples all together. So i get the 1 step like A windmill –> Light bulb….so like that is a energy conversion….but i dont get the 2,3,4 step ones. Its energy conversions like mechanical, chemical, light, ect…… Sorry if i am confusing!
admin answers:
Sunlight focally concentrated to create intense heat…heat causes steam…steam pressure turns a turbine…turbine generates electricity
Sunlight=electricity
Maria asks…
I need help with these energy conversions….?
Batteries- Mechanical Energy
Windmill- Electricity
admin answers:
When you say conversion you assume the conversion is linear and that just is not the case.
A kilogram is always equal to 2.2 lb_m.
A mile is always equal to 5280 ft.
If you drain a battery fast, you get less total energy out of it than if you drain it slowly. It has internal resistive losses that parasite the energy. Those losses depend on the make/model/mfr of the batteries, the nature of the electrical load they are under, and even what temperature of environment they are operating in.
In the same what that the battery-mechanical conversion is complex, so is the wind-electricity. The electrical output of your wind turbine depends on the geometry of the blades, the exact behavior of the wind, the operating design and speed of the generator (or alternator) that you use, temperature, resistance of the electrical circuit etc…
If you are looking for a cheap rule of thumb: a solar car (http://www.americansolarchallenge.org/) powered by a commercial generator (http://www.hondapowerequipment.com/products/models.aspx?page=models§ion=P2GG&category=play) and carrying a human being could get about 80mpg.
Joseph asks…
Science Help please 
?
Which process best shows the conversion of solar energy to chemical energy?
A) tides generating electricity
B) green plants making their own food
C) uranium producing heat to make steam
D) prevailing winds causing windmills to spin
admin answers:
B cause plants take in the sunlight and through photosynthesis, they perform a chemical process to release air.
Carol asks…
Science Question please help!?
Which process best shows the conversion of solar energy to chemical energy?
A) tides generating electricity
B) green plants making their own food
C) uranium producing heat to make steam
D) prevailing winds causing windmills to spin
admin answers:
Green plants making thir own food because they are using energy from the sun(which is solar energy)and converting it into photosynthesis(which is chemical energy).
Powered by Yahoo! Answers