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Flashcards in Energy for Canada Deck (18)
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1

Three sources of energy we use (only these three)

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

2

What is a calorie

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

3

What is a joule

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

4

What is a Watt

1 Joule per second

5

Power =

Energy over time

6

Energy =

Power x time

7

Define bitumen

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

8

Define shale fracking

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

9

Some negative aspects of using wood for energy (4)

•-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

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

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

Benefits of hydro electric dams (2)

1. easy to adjust energy production
2. very low carbon emissions

12

Drawbacks of dams

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

13

Explain how tide power generation works

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

14

Wave power source

Large turbines that turn by waves pushing them

15

Benefits of nuclear power

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

16

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

15-20 km/hr

17

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

U-235

18

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

Elastic potential