The burning lava of a volcano, which is molten rock, is capable of reaching extremely high temperatures ranging from 700 to 1,200 degrees Celsius (1,300 to 2,200 degrees Fahrenheit). At these temperatures, many common materials will indeed melt or undergo significant damage. However, not all objects on Earth will melt when exposed to lava.
The ability of lava to melt objects depends on various factors, including the type of material, its melting point, and the duration of exposure to the intense heat. Some materials, such as metals with high melting points like steel or titanium, can withstand the temperatures of lava to some extent. However, prolonged exposure or direct contact with lava can still cause deformation or severe damage.
Most organic materials, including wood, plastic, fabric, and even some rocks, have significantly lower melting points and will easily succumb to the heat of lava, melting or burning upon contact. Structures made of these materials, such as buildings, vehicles, or vegetation, would be at risk of being consumed or severely damaged by lava flows.
It's important to note that lava also releases intense heat radiation, which can ignite flammable materials without direct contact. Additionally, the gases and toxic fumes emitted by volcanoes can be hazardous to living organisms and further contribute to the destruction.
Overall, while lava can melt many objects on Earth, the specific outcome depends on the composition and melting points of the materials involved, as well as the duration and intensity of exposure to the extreme heat.