Final answer:
Solar activity, such as solar flares and CMEs, can cause auroras and technological disruptions on Earth. They do not cause global warming, significantly affect tides, or lead to a magnetic pole reversal. The field studying these impacts is called space weather.
Step-by-step explanation:
Solar flares and related coronal mass ejections (CMEs) impact Earth in various ways. One of the most visible effects of solar activity is the creation of auroras, which are displays of light in the Earth's atmosphere caused by charged solar particles colliding with atmospheric gases. However, space weather events like solar flares can also disrupt communications, damage satellites, and lead to power outages. They do not directly cause global warming, significantly affect tides, or result in magnetic pole reversal.
The field of study concerned with these solar impacts is known as space weather. Although the effect on global climate is complex and not yet fully understood, it's currently believed that variations in solar activity, specifically in ultraviolet radiation, may influence the upper atmosphere and could potentially alter weather patterns and regional rainfall.