1. which part of a compressional wave has the lowest density?

The density of the wave will be the lowest just past downstream of the wave. So, if the wave is moving from left to right (making the right side downstream), then just past the right side of the wave will have the lowest density.

A compression wave occurs when there's a lot of pressure build up. Think of air flowing through an air duct. All of a sudden, the duct gets smaller, making this compression form a wave. The downstream side of the wave will have the lowest density because the waves themselves will be farther apart.

Explanation:

A compressional wave could be a wave that's close and crosswise waves square measure waves that are going the approach the wave travels. Answer 2: essentially, it is an acoustic wave. A compressional wave could be a wave that travels back and forth, moving with compression. Since it's a mechanical wave it should use a medium to travel tho'. An acoustic wave could be an example of a compressional wave. A compressional wave could be a wave that travels back and forth, moving with compression. Since it's a mechanical wave it should use a medium to travel tho'. A sound wave could be an example of a compressional wave.

-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

because growing process had stoped after 4-5 year