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Flashcards in Energy for Canada Deck (18)
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1
Q

Three sources of energy we use (only these three)

A
  1. Nuclear decaying, splitting, and fusing
  2. Chemical bond breakage
  3. Thermo-mechanical: potential and kinetic energy
2
Q

What is a calorie

A

The energy needed to heat one gram of water one degreee celsius

3
Q

What is a joule

A

Energy to accelerate 1 kg to 1m*s^2

4
Q

What is a Watt

A

1 Joule per second

5
Q

Power =

A

Energy over time

6
Q

Energy =

A

Power x time

7
Q

Define bitumen

A
a mix of
hydrocarbons from CH4
(methane) to long
chained polymers.
Bitumen is too viscous
to flow unless heated or
decomposed
8
Q

Define shale fracking

A

The use of high temperature, pressure, and water to crack open shale and extract the natural gas contained therein

9
Q

Some negative aspects of using wood for energy (4)

A

•-Energy per volume much lower than oil/ gas
•-Transporting wood large distances is not economical
•-Does not scale to industrial processes
•-Particulate emissions need to be scrubbed from to
reduce potential health effects

10
Q

What are four things that are bad about mining for oil in the sands

A
  1. Large energy demand (>10% of product)
  2. Large amounts of waste sand and water
  3. potential to contaminate water and soil
  4. Carbon pollution
11
Q

Benefits of hydro electric dams (2)

A
  1. easy to adjust energy production

2. very low carbon emissions

12
Q

Drawbacks of dams

A

reservoir impacts wildlife and fish migration
Volume of flow and power vary seasonally
silt accumulates behind dam

13
Q

Explain how tide power generation works

A

Tide rises high, water caught, tide goes down, water still caught behind barrier, flows out generating power

14
Q

Wave power source

A

Large turbines that turn by waves pushing them

15
Q

Benefits of nuclear power

A
\+ No green house gas emissions
\+ Fuel is inexpensive and abundant
\+ Good for feeding electric grid
\+ Small volumes of waste produced vs other
combustibles
16
Q

what is the minimum wind speed needed for economical power generation?

A

15-20 km/hr

17
Q
1.	Which of the following has the highest energy density? 
•	Wood
•	Stretched Elastics
•	Oil 
•	U-235
A

U-235

18
Q
2.	Which of the following is NOT a type of energy that we use to power our lives? 
•	Thermo-mechanical 
•	Nuclear potential 
•	Chemical potential 
•	Elastic potential
A

Elastic potential