Chapter 4: Electromagnetic Spectrum and Radiation

What is the first stage in remote sensing?

• Recording of the energy at the sensor

• Emission of electromagnetic radiation

• Transmission of energy from the object to the sensor

• Analysis of data

Which type of energy is NOT recorded by remote sensors?

• Thermal energy emitted by the Earth

• Sound energy

• Energy emitted from an object

• Solar energy reflected by an object

What are the wavelength ranges in which the atmosphere is transparent called?

• Radiation windows

• Atmospheric windows

• Transmission bands

• Energy bands

What is the wavelength range for the visible spectrum?

• 700-1000 nm

• 400-700 nm

• 1-10 mm

• 100-400 nm

Which type of scattering is responsible for the blue color of the sky?

• Mie scattering

• Rayleigh scattering

• Non-selective scattering

• Diffuse scattering

What happens to radiation during absorption?

• It is scattered

• It is transmitted

• It is reflected

• It is converted to heat

What is the primary cause of Mie scattering?

• Gamma radiation

• Haze and ice crystals

• Water droplets and dust

• Atmospheric gases

What happens to radiation during scattering?

• Passes thru

• Convert into heat

• Reflection & refraction

• All above

What is the wavelength range for infrared radiation?

• 0.7 um - 1 mm

• 0.1 um - 1 mm

• 0.5 um - 0.7 um

• 1 um - 10 mm

Which of the following is NOT a type of atmospheric scattering?

• Rayleigh scattering

• Mie scattering

• Non-selective scattering

• Thermal scattering