Formation of Words in Upsurge:
- The word "upsurge" is formed by adding the prefix "up-" meaning an increase or upward movement, and the root word "surge" meaning a sudden powerful forward or upward movement.
- When these two elements are combined, they create the word "upsurge" which conveys the idea of a sudden increase or rise in something.

Meaning of Upsurge:
- The term "upsurge" refers to a sudden and significant increase or rise in something, such as emotions, trends, movements, or any other phenomenon.
- It signifies a surge or spike in a particular aspect, indicating a notable upward movement or growth.

Usage in Sentences:
- Examples of using "upsurge" in sentences include:
- "There has been an upsurge in the number of COVID-19 cases in the past week."
- "The upsurge of support for the new policy was evident in the recent polls."

Impact of Upsurge:
- An upsurge can have various impacts depending on the context in which it occurs.
- It can lead to positive outcomes such as increased awareness, growth, or success, or negative consequences like instability, conflict, or overwhelm.

Conclusion:
- In conclusion, the word "upsurge" is formed by combining the prefix "up-" with the root word "surge" to signify a sudden increase or rise in something.
- Its usage in sentences can help convey the idea of a significant upward movement or growth, and understanding its impact is crucial in interpreting its implications in different situations.