Which of the following statements is TRUE?

S-waves are able to pass through the Earth's core.
Continental-continental plate convergence is reponsible for the creation of mountain ranges.
Oceanic crust is on average about 60 - 100 km thick.
The Richter Scale measures earthquake intensity on a scale of I - XII.

continental-continental plate convergence is respinsible for the creation of mountain ranges.

NOTE:
S-waves pass through solids but NOT liquids (P-waves do.)
The Richter Scale has no upper limit.
Oceanic crust is on average 7km thick

To determine which statement is true, let's analyze each statement one by one.

Statement 1: S-waves are able to pass through the Earth's core.
This statement is FALSE. S-waves, also known as shear waves, are unable to pass through the Earth's core. They can only travel through solids, and the Earth's core is primarily composed of molten iron and nickel, which are in liquid form.

Statement 2: Continental-continental plate convergence is responsible for the creation of mountain ranges.
This statement is TRUE. When two continental plates collide and converge, they can neither be subducted nor slide past each other easily due to their buoyancy and similar density. As a result, the plates buckle and form fold mountains, leading to the creation of mountain ranges.

Statement 3: Oceanic crust is on average about 60-100 km thick.
This statement is FALSE. Oceanic crust is thinner than continental crust. While the thickness can vary depending on location, on average, oceanic crust is approximately 5-10 km thick. In contrast, continental crust is about 30-50 km thick.

Statement 4: The Richter Scale measures earthquake intensity on a scale of I - XII.
This statement is FALSE. The Richter Scale measures the magnitude or energy released by an earthquake, not its intensity. The scale measures from 0 to 10+, with each whole number increase representing a tenfold increase in the amplitude of seismic waves. The Modified Mercalli Intensity Scale (MMI) is used to measure earthquake intensity on a scale of I to XII, with I being the weakest and XII being the most severe.

Therefore, the TRUE statement is: Continental-continental plate convergence is responsible for the creation of mountain ranges.