In the investigation shown, students tested to see how long it takes the two metal bars to heat up enough to cause the beads of wax to fall off. One student believes
the wax on the lead rod will fall off; his lab partner says the opposite. Assuming that
aluminum has a lower specific heat than lead, which students is most likely correct and why?

A. The pieces of wax on the aluminum rose will off first because of aluminums low specific heat
B. The pieces of wax on lead rod will off first because of leads high specific heat
C. All four pieces of wax will off at the same time because metals are good conductors of head
D. The metals will not heat up enough to cause the wax to fall off because they are dense

-first use of geothermal energy occurred more than 10,000 years ago in north america by american paleo-indians

-the first industrial use of geothermal energy began near pisa, italy in late 18th century

-in 1904, italian scientist piero ginori conti invented the first geothermal electric power plant in which steam was used to generate the power

-with the above experiment, the first geothermal plant in usa started in 1922 with a capacity of 250 kilowatts

-however, in 1946 first ground-source geothermal heat pump installed at commonwealth building in portland, oregon

-during the 1960’s, pacific gas and electric began operation of first large scale geothermal power plant in san francisco, producing 11 megawatts

-in 1973, when oil crisis began many countries began looking for renewable energy sources and by 1980’s geothermal heat pumps (ghp) started gaining popularity in order to reduce heating and cooling costs

-as effect of climate change started showing results, governments of various countries joined hands to fight against it, for which kyoto protocol was signed in japan in 1997, laid out emission targets for rich countries and required that they transfer funds and technology to developing countries, 184 countries have ratified it

hope this