The lowest temperatures and highest SiO2SiO2 contents occur in rhyolitic magma, material so viscous that it commonly does not flow.Group startsTrue or False

Analysis of the Statement

1. Definition of Rhyolitic Magma:

   • Rhyolitic magma is a type of volcanic rock that is high in silica (SiO2), typically containing more than 70% SiO2. Its high viscosity means it does not flow easily.

2. Temperature Characteristics:

   • Rhyolitic magma is known to solidify at relatively lower temperatures compared to basaltic magma. The typical temperature range for rhyolitic magma is approximately 650°C to 900°C.

3. Viscosity:

   • The high SiO2 content contributes to the significant viscosity of rhyolitic magma, which can prevent it from flowing freely, often leading to explosive volcanic eruptions rather than gentle lava flows.

Conclusion

Based on the definitions and characteristics of rhyolitic magma, the statement is True. Rhyolitic magma is associated with both the lowest temperatures and the highest SiO2 contents, resulting in its highly viscous nature. This high viscosity contributes to its inability to flow easily.