Which characteristics are used to describe air? Check all that apply.
2 answers:
<u>ANSWER:</u>
The characteristics that are used to describe air are:
- Density
- Mass
- Pressure.
<u>EXPLANATION:</u>
- The density of air differs from one place to another so density characterizes the characteristics of air on that place.
- Similarly, pressure and mass also determines the characteristics of air. In normal temperature and pressure the air has the pressure of 1atm and density of
- In this way air is characterized by the density, pressure and mass.
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Answer:
The albedo temperature for Mars and Venus are 210K and 184 K respectively.Mars albedo temperature is closer to its black body temperature such that the Venus has more albedo.Thus there is a chance that Mars would have had life in their history.
Explanation:
The albedo temperature is given as
Here
L = Solar luminosity = 3.846*1026 W m-2 K-4
D = distance from Sun
σ = the Stefan-Boltzman constant = 5.6704 * 10-8 W
a is the albedo constant whose value for Mars is 0.250 while for Venus it is 0.900
So the albedo temperature is given as
Venus: 184 K
Mars: 210 K
The black body temperature is given as
By substitution of the values, the black body temperature for Venus and Mars are as
Venus: 327 K
Mars: 225 K
Mars albedo temperature is closer to its black body temperature such that the Venus has more albedo.
Thus there is a chance that Mars would have had life in their history.