Item number：PJ87 Volcanic crust （Injection molded version)
Product name： Volcanic crust （Plastic version)
"Size"：146*120*80mm
Material：塑料
颜色：棕
是否使用电池:否
装箱：400pcs
Box gauge：600*400*500mm
Lu Zuodeng's courtesy name-2022-F-00759845
The direct factory supply price has an advantage，Our own intellectual property rights can be sold with confidence，
For large quantities, colors can be customized as required
Experimental purpose
1.Be able to have an intuitive understanding and observation of volcanic eruptions
2.Be able to understand the basic principles of volcanic eruptions
3.One can gain a successful experience in the experiment
4.Exercise practical ability
Experimental understanding and summary
Volcanic eruption is a peculiar geological phenomenon，It is a manifestation of crustal movement，It is also the most intense manifestation of the internal heat energy of the Earth on the surface。It is the release of magma and other ejecta from the crater to the surface within a short period of time。Because magma contains a large amount of volatile components，In addition, there is the confining pressure from the overlying rock strata，Make these volatile components dissolve in the magma and prevent them from escaping，When magma rises and approaches the surface，Reduced pressure，Volatile components are released rapidly，So a volcanic eruption was formed。
Be cautious of volcanic eruptions
During the gestation stage of a volcanic eruption，Due to gas leaching and the occurrence of seismic groups，The degree of fissures in the overlying rocks has increased，The pressure drops while the amount of gas dissolved from the magma keeps increasing，The volume of magma gradually expanded，Decrease in density，Increased internal pressure，When the internal pressure far exceeds the external pressure，A violent gas explosion occurred in the fracture density zone of the overlying rock，Break the rock，And open the passage for volcanic eruptions，First, spray out the fragments，What followed was the eruption of magma。
Little knowledge point（The hazards of volcanic eruptions）
Affect the global climate：A large amount of volcanic ash and volcanic gases are ejected during a volcanic eruption，It has a huge impact on the climate。Because in this situation，Dim daylight and fierce wind and rain，Even mud rain can trouble local residents for months。Volcanic ash and volcanic gases were ejected into the high sky，They will be scattered far away by the wind。These volcanic materials can block sunlight，Lead to a drop in temperature。
Damage the environment：The large amount of volcanic ash ejected by volcanic eruptions, combined with heavy rain, can form mudslides that can wash away roads、Bridge，The flooding of nearby villages and cities has left countless people homeless。 Soil、The mud formed by rock debris could flood an entire city like a flood。
Safety Warning：
All the accessories in this product are special equipment for student experiments and production，Please ensure safety under the supervision and guidance of teachers and parents Use it all below！All products are prohibited from consumption！Not suitable for children under three years old，Do not press near the fire source。If used Please check whether the circuit is unobstructed before assembling the battery、Whether the accessories on the circuit are complete，Whether each contact is good or not good，On the battery+It is the positive pole、-It is the negative pole，组装过程中注意If used胶水不要弄到眼睛和皮肤上。
