1. Scientists use models of the Sun to better understand how it works. The currently accepted model of the Sun indicates that it has a dense core
surrounded by different layers. How is energy transferred from the core of
the Sun to its outer layers?
A. Energy radiates outward from the core as visible light.
B. Energy is carried inward from the outer layers by convection.
C. Energy is radiated out from the core first, then carried to the outer layers
by convection.
D. Energy is carried out from the core by convection first, then radiated to
the outer layers.

layers of the earth affect the waves and these effects are seen on instruiments such as seimometers

resonant frequency

-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

it doesn't. it was imagined up in the middle ages.