Joints

Question 1

How are they formed?

Answer 1

By tectonic forces

Question 2

How are tension joints formed?

Answer 2

Compression

Question 3

What is a joint?

Answer 3

Brittle fracture along which there is little or no displacement parallel to the fracture

Question 4

What are cooling joints and how are they formed?

Answer 4

Cooling of molten rocks causes contraction and stresses generated between individual cooling cells form joints, separating the rock into regular hexagonal shapes.