1. The Earth's inner core is solid.
地球的地核是固态的。
2. The temperature of the inner core is extremely high, around 6000 degrees Celsius.
地核的温度极高,约为6000摄氏度。
3. The movement of the inner core generates the Earth's magnetic field.
地核的运动产生了地球的磁场。
4. Scientists study the structure of the inner core using seismic waves.
科学家通过地震波研究地核的结构。
5. The density of the inner core is very high.
地核的密度非常高。