It could be the air. the volcano let out air that changes the atmosphere.
Answer:
True, majority of the earth energy source comes from the <u>internal motion</u> but rest comes from outside.
Explanation:
- Earth gets its energy from the interior of the planet like the core which forms the most essential driving force of the planet it not just only regulate the flow of geomaterial from the bottom to the top but also acts as a geothermal source for various energy process.
- As we know this is called the Endogenetic force of the planet caused due to the earth rotation without which earth would have been dead long ago. The external forces of Denudation which break down the landscape from above are of Exogenic in nature.
- The sun's rays that are 100% at the surface of the earth but, come down o only 50% at the ground level as most of it gets deflected by the natural Albedo of the earth with is 35%. This partial absorption, deflection, and then reflection
- Thus this process is a temporary phase as all this gets reradiated back in a long wave from at night.
- Thus internal thermodynamics has a huge role to play in the formation of earth energy processes.
<h3>Mid-ocean ridges and plate tectonic theory</h3>
Explanation:
The German geophysicist, Alfred Wegener, proposed the continental drift theory which explained about the drifting of continents from a single large mass.
With the advent of sonar-equipped ships, scientists were able to map the ocean floor. They collected topographic data from the ocean bed which showed them varied features like valleys, high mountains, flat plains etc.
Later, they discovered a ridge in the mid-Atlantic Ocean which ran parallel to the continental coastline and up above 1-2 km above the ocean floor. Then similar mid-ocean ridges were found in other major oceans like the Pacific and the Indian Ocean which also ran parallel to the continental coastline.
These ridges corresponded to hot magma regions which drifted the ocean floor corresponding with Wegner’s continental drift theory.
Later with the discovery of magnetometers and its usage in ships, scientists were able to detect the magnetism exhibited rocks on the sea floor.
Combining all the theories, the continental drift theory, ridges of mid-Atlantic Ocean, magnetism of rocks at ocean bed all led to the formulation of the plate tectonic theory.
During the northern hemisphere summer solstice, the area above the Arctic Circle above 66.5 degrees north receives 24 hours of daylight