Eismic wave that causes the ground to move in two directions 3
Deformation of materials in response to stress

Measure of the energy released by a quake

Fracture in rock along which movement occurs

Section of an active fault that has not experienced a significant earthquake for a long time

Rates earthquake intensity

Forces per unit area acting on a material

Wave generated by vertical motions of the seafloor

modified Mercalli scale
2.
magnitude
3.
stress
4.
fault
5.
tsunami
6.
strain
7.
seismic gap
8.
surface wave

a. the law of proportion states the combination of 2 atoms in a specific ratio to produce multiple compounds such as the given statement of question ‘1st compound contains 88.8 % cu ’ indicates 88.8 g of cu is present along with 11.2 g oxygen in 100 g of compound whereas the statement ‘2st compound contains 79.9 % cu ’ indicates 79.9 g of cu is present along with 20.1 g oxygen in 100 g of compound

1st compound contains 88.8 g cu

for cu

m = 63 g /mol

atomic % = 88.8 /63 = 1.42

for o

m = 16 g /mol

atomic % = 11.2 /16 = 0.7

b. the emperical formula of 1st compound is

cu1.4o0.7

cu2o