Here's why:
* Composition: Basaltic magma is low in silica content (around 45-55%). This makes it less viscous, meaning it flows more easily.
* Temperature: Basaltic magma is generally hotter than other types of magma. The higher temperature further reduces its viscosity.
* Gas Content: Basaltic magma tends to have a lower gas content compared to other types of magma. This makes it less explosive.
These factors combine to create a magma that is relatively fluid, allowing it to flow quickly and easily. This is why basaltic eruptions often result in the formation of shield volcanoes, which have gentle slopes due to the wide and smooth flow of lava.
