Question $1$

Define or explain the following terms:

a$)$ Geophysics

b$)$ Electrical Resistivity Imaging $($ERI$)$

c$)$ Instrument Drift

d$)$ Self Polarisation

c$)$ Induced Polarisation

f$)$ Geophone

g$)$ Magnetic Susceptibility

h$)$ Compressional Wave

i$)$ Magnetic Storm

j$)$ Diumal Variation

$(4$ Marks $10=10$ Marks$)$