2.2.2. Properties of EMR

Try these first

1. 1.

   What does wavelength (λ) represent?

   Hint

   Think about how you measure distance on a wave.

2. 2.

   What is the approximate speed of light in a vacuum?

   Hint

   Consider how quickly light travels!

3. 3.

   What is the wavelength of radio waves compared to gamma rays?

   • Shorter
   • Longer
   • Same

   Hint

   Think about their positions in the electromagnetic spectrum.

4. 4.

   True or False: As frequency increases, wavelength increases.

   • True
   • False

   Hint

   Reflect on the formula c = λ × f.

5. 5.

   If an electromagnetic wave has a frequency of 1 x 10^9 Hz, calculate its wavelength.

   Hint

   Remember to keep the formula in mind for calculations.

6. 6.

   Discuss the implications of different electromagnetic wave properties on remote sensing applications, such as detecting vegetation or urban areas.

   Hint

   Relate back to how wavelength influences detection of materials.