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PHYS 273 Energy and Environment Final Exam Study Guide 2024 Actual Questions and Answers with complete solution CA$22.12   Add to cart
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PHYS 273 Energy and Environment Final Exam Study Guide 2024 Actual Questions and Answers with complete solution
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PHYS 273 Energy and Environment Final Exam Study Guide Actual Questions and Answers with complete solution

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  • November 13, 2023
  • 17
  • 2023/2024
  • Exam (elaborations)
  • Questions & answers

Subjects

  • phys 273
  • phys 273 energy and environment final exam study
  • the ratio of different types of carbon in the atmo
  • which of the following is not true
  • the source of the increase in atmospheric co2 is

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PHYS 273 – Energy and Environment
Final Exam – Study Guide
The ratio of different types of carbon in the atmosphere tells us
a. that CO2 levels have increased since the 1800s.
b. that the increase in atmospheric CO2 is from very old sources.
c. nothing about the source of atmospheric CO2.

Global mean sea levels have been steadily rising since 1900. This can be accounted for by
a. glacial mass loss and oceanic thermal expansion.
b. glacial mass loss and increased precipitation.
c. oceanic expansion and increased precipitation.
d. data anomalies.

Greenhouse gasses are gasses that

Are transparent to visible light but absorb infrared

Which of the following is not true?

a. The Earth has been warming over the last 100 years
b. It is unclear what has caused the increase in atmospheric CO2
c. The current average temperature of the Earth is the highest it’s been in about 1000 years
d. Atmospheric CO2 levels are the highest they have been in about 400 000 years

The last time the atmospheric CO2 concentrations were as high as they are now was

They have never been this high in the last 400 000 years

Today’s weather can tell us if climate change is real.

False

Without humans there would be no greenhouse effect.

False

Greenhouse gases

Absorb much more outgoing radiation from the Earth than incoming radiation from the sun

The source of the increase in atmospheric CO2 is

a. Human activities
b. The natural carbon cycle

Earth is warming

True

Coal is the only fossil fuel that contains sulphur

False



Which sector produces the most nitrogen oxide?


1

, a. Transportation
b. Fossil fuel burning excluding transportation
c. Industrial processes
d. Biofuel burning

Almost all air pollutant emissions are currently the highest they have been in the last 15 years

False

The energy sector is the leading cause of sulphur oxides

False

The layer of the atmosphere closest to the Earth’s surface is called the

a. Mesosphere
b. Troposphere
c. Thermosphere
d. Stratosphere

In Canada, the number of rail and truck oil related incidents has been fairly steady over the last 10
years or so

True

The most abundant air pollutant is

a. Nitrogen oxides
b. Carbon monoxide (CO)
c. Particulates
d. Volative organics

Which has potential for the largest oil spills?

a. Pipeline
b. Truck
c. Rail

The main pollutant that can contaminate water systems after coal has been burned is called.

a. Coal ash
b. Cool silt
c. Coal tails
d. Potash

Which is of greater importance in terms of environmental impact?

a. NO
b. NO2



A good home insulation will not be good at transferring heat.


2

, True

In Canada most of our residential energy use is consumed through

a. Space cooling
b. Water healing
c. Space heating
d. Lighting and appliances

When heat is transferred through the macroscopic movement of fluids, the process is called

a. Convection
b. Conduction
c. Transaction
d. Radiation

When heat is transferred by light being emitted or absorbed, the process is called

a. Transaction
b. Radiation
c. Conduction
d. Convection

When heat is transferred between two objects in contact with each other, the process is called

Conduction

The standard that certifies energy efficient products is called

a. Green Star
b. Energy Star
c. GreenLife

All electric heating systems do not depend on fossil fuels for energy production

False

If a 100W light bulb produces 3W of visible light, 60W of heat, and 37W of invisible radiation,
whats is its efficiency?

3%

Energy efficient light bulbs are about 50% more efficient than standard light bulbs.

False

A heat pump uses electricity

a. To generate heat
b. To burn fuel
c. To run a small compressor




3

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