Answer:
The terrestrial planets experience quakes, the gas giant do not.
Terrestrial planets experience tectonic activity the gas giant do not.
Activity in the molten interior of the terrestrial planets results in the tectonic activities.
Step-by-step explanation:
Terrestrial planets are those planets which have a true solid surfaces while gas giants do not have a true solid surfaces, they are mostly made of gases. So due to the absence of solid surfaces, they do not have any volcanoes so no tectonic activities occurs. Tectonic activities only occurs on the terrestrial planets such as earth. Saturn, Neptune and Uranus are the examples of gas giants.