Answer:
The increase in wave amplitude is 1 unit.
Step-by-step explanation:
Given : In wave amplitude is seen from an earthquake measuring 5.4 on the Richter scale compares to the one measuring 4.4.
To find : How much of an increase in wave amplitude ?
Solution :
Richter scale compares to the one measuring 4.4 unit.
In wave amplitude, an earthquake measuring 5.4 unit.
Increase in measuring is higher value subtracting lower value.

Therefore, The increase in wave amplitude is 1 unit.