Introduction to Geophysical Methods

Which type of geophysics focuses on studying the Earth using physics methods to deduce its physical properties?

• Applied/exploration geophysics

• Gravity method

• Seismic methods

• Pure/general geophysics

What is the main method used in petroleum exploration?

• Seismic methods

• Electrical surveying

• Gravity method

• Reflection and refraction seismology

Which field of applied geophysics involves studying ground properties and providing development plans for soil mechanics?

• Geothermal reservoirs

• Engineering geophysics

• Exploration geophysics

• Environmental geophysics

What is the purpose of environmental geophysics?

• To search for economic deposits

• To study ground properties

• To study disposal waste sites

• To monitor fluid flow

Which method is mainly used in petroleum exploration?

• Gravity method

• Electrical surveying

• Magnetic surveying

• Seismic methods

What is the focus of exploration geophysics?

• Investigating specific, relatively small-scale and shallow features within the Earth's crust

• Searching for economic deposits

• Studying the Earth by using methods of physics

• Monitoring waste deposits/location of contamination

Which method in Applied Geophysics measures the variations in the strength of the gravitational field?

• Electric

• Gravity

• Seismic

• Magnet

What physical properties are measured in the Seismic method?

• Variations in the strength

• Travel times of seismic

• Density of the gravitational field

• Density and elastic waves moduli

Which methods are suitable for an engineering site study?

• Electric, Seismic, Electromagnetic, Magnet

• Electric, Electromagnetic, Seismic

• Gravity, Electric, Magnet

• Seismic, Gravity, Magnet

What does the Electromagnetic method measure?

• Electrical conductivity & inductance

• Electrical conductivity

• Polarization voltage

• Electrical capacitance