Answer:
d) the air temperature equals the dew point temperature
Explanation:
Generally, the temperature of air decreases with an increase in altitude. The higher the altitude, the lower the temperature and vice versa. However, when the temperature of air is equivalent to the the dew point temperature, it is known as the cloud base. Therefore, the correct option is (D) since the cloud base is 500 m above the surface of the Earth.
The air temperature equals the dew point temperature is the right answer.
The dew point is the temperature at which the water vapour in air at a constant pressure will condense into liquid form. The temperature of air decreases with an increase in altitude.
When the temperature of air is equals to the the dew point temperature, it is called the cloud base so we can conclude that the air temperature equals the dew point temperature is the right answer.
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