is lava a liquid with very high temperature

Yes, lava is a molten rock that flows on the Earth's surface and is considered a high-temperature liquid. Here are some key points about lava:

1. Molten State: Lava is typically composed of a complex mixture of silicates, magnesium, iron, and other elements. When a volcano erupts, the extreme heat causes these materials to melt and turn into a liquid.

2. High Temperature: Lava temperatures can vary widely, but they typically range between 700°C (1300°F) and 1200°C (2200°F) for basaltic lava, and up to 1000°C (1832°F) for the more viscous rhyolitic lava. These high temperatures allow lava to flow and reshape landscapes.

3. Flowing Behavior: Like any liquid, lava's flow is influenced by gravity and its viscosity. Viscosity is affected by factors such as temperature and composition, with hotter and more fluid lava flowing more easily than cooler, more viscous lava.

4. Environmental Impact: The movement of lava can have significant effects on the local environment. It can create new land, destroy vegetation, and change ecosystems. Lava that cools and solidifies can form various types of igneous rock.

5. Cooling and Solidification: When lava comes into contact with the cooler atmosphere or water, it begins to cool and solidify. The cooling process affects the texture and structure of the resulting rock. Rapid cooling can produce glassy textures, while slower cooling allows for the formation of larger crystals.

6. Different Types: There are various types of lava based on their composition, including basaltic, andesitic, and rhyolitic lava, each with different properties, viscosities, and temperatures.

In summary, lava is indeed a high-temperature liquid that results from the melting of rocks deep within the Earth. Its flowing and cooling processes play a crucial role in shaping the Earth's surface and creating new geological formations.