Final answer:
Coronal Mass Ejections (CMEs) can create auroras and disrupt communication signals. This solar activity interacts with Earth's atmosphere and magnetosphere, causing geomagnetic storms that affect electronics and power systems.
Step-by-step explanation:
The natural phenomenon that can cause an aurora and also disrupt television, radio, and telephone signals is a type of solar activity known as Coronal Mass Ejections (CMEs). When charged particles from the solar wind and solar flares reach the Earth's magnetosphere, they interact with particles in the atmosphere to create the beautiful displays of the aurora borealis and aurora australis. However, these charged particles can also cause geomagnetic storms that result in disruptions to electronic communications and power systems. Earth's proximity to the magnetic pole in North America increases the susceptibility of this region to impacts from CMEs, which may induce strong currents capable of tripping electrical power grids and interfering with satellite communications.