Application Exercise 4

  1. Greenhouse gases trap the Earth’s infrared radiation. So, the atmosphere keeps the Earth warm.
  2. Global warming is a long term change. There may be insignificant and inconsistent increases in temperature change in a specific year. However, the increases in temperature change over a period of time may then be more significant to determine that global warming has really occured. So, the statement is not completely accurate because “this winter” only refers to a specific year.
  3. There is water vapour in the air. So, the radar using water molecule rotation will be affected by noise from the water vapour, especially on rainy days. The absorption of microwave radiation by water in the atmosphere interferes with the detection of intended objects.
    Also, microwave radiation of a wavelength triggers the rotation of water molecules. This heats up the air around the machine, leading to diseases caused in the operators of the radar.
  4. Air quality will affect us in the short run. Air pollution caused by vehicle emissions (NO2, CO, etc) can be hazardous to our health (cause respiratory problems). Global warming will affect us in the long run. It results in an increase in temperature on Earth that leads to rises in sea levels. This will take a long time for it to have a significant impact. So, even though there is no significant impact on us now, we may experience the accumulated effects in the future.