Earth Systems MTEB

Which of the following is NOT a variable gas in the atmosphere?

• Water vapour

• Carbon dioxide

• Argon

• Ozone

What is the molecular mass of dry air and water vapour respectively?

• 18, 29

• 29, 18

• 19, 32

• 32, 19

A farmer needs 20kg/ha of nitrogen for his paddock. If the paddock is 16.2 acres, how much UREA with 46% nitrogen will the farmer need? (1 acre = 0.405ha)

• 540kg

• 311kg

• 285kg

• 101,870g

P = 1013.25hPa, density (p) = 1.22kg/m³, find temperature using the equation of state

• 16.3K

• 15°C

• 289.38K

• 289.38°C

The layer of air that is constantly stirred by weather systems and is relatively unstable in known as:

• Troposphere

• Tropopause

• Stratosphere

• Lithosphere

Which of the following is not a variable in the Equation of State?

• Temperature

• Concentration

• Pressure

• Density

Consider the following. Electricity generation in Australia amounted to 325,023 GWh a year in 2016-2018. Assuming solar radiation of 125 Wm^-1 at the surface and a 19% conversion rate, how much land for solar panels would be required to produce the same amount of electricity for Australia (in Km²)

• 1572 m²

• 1561 m²

• 1562 Km²

• 1572 Km²

If surface temperature is increased by a factor of 10 then radiation…

• Increases

• Increases 10 times

• Increases 1000 times

• Increases 10,000 times

If an object was 100°C then what would the length of its wavelength be?

• 7.77 μm

• 0.03 μm

• 28.97 μm

• 0.00017mm

What is the definition of a black body?

• A perfect absorber

• Both a perfect absorber and a perfect emitter

• A perfect emitter

• A perfect absorber and a perfect reflector