Concordia University

PHYS 273

LESSON 6

1)What fraction of Canada’s 2015 electricity production was from solar energy? a. 20%

b. 30%

c. 1% d.10%

2. Which of the following is part of a home designed with passive solar heating?

1. 1. mirrors and lenses
   2. use of solar collectors on the roof
   3. greenhouse
   4. little insulation
   5. south facing windows

3. Photovoltaic solar cells are

3. 1. wafers of crystalline silicon treated with metals that absorb solar radiation & generate electricity
   2. single-celled organisms that are used to collect solar radiation, which they turn into heat
   3. cheap to produce, but contribute to atmospheric pollution, including CO2
   4. high efficient in converting solar energy to electricity
4. Why is solar energy production in MTL less promising than other regions such as southwest- ern united states

1. 1. the amount of solar energy (insolation) is much lower in montreal
   2. it is much colder

5. The amount of solar radiation hitting the earth depends on

1. 1. amount of cloud clover
   2. distance from equator c.season of the year

d. all mentioned above

e. time of day

6. The sun’s energy is thought of as a renewable energy because

6. 1. sun will last indefinitely
   2. cannot capture and use all energy from sun
   3. sun’s energy is in the form of light making it environmentally friendly
   4. sun’s lifetime is very very long
7. Net metering

1. Allows you to buy electricity at a lower rate from provider
2. allows you to sell (or exchange for credit) excess solar power that you have generated back to the provider
3. Is not available in QC

Only viable option if you can produce 100% (or more) the energy you consumer

8. Starting with energy production in the sun, choose the correct form of energy to complete the energy flow description for an solar thermal electricity production system?

9. A heat exchanger is a device that

1. 1. transfers thermal energy from one fluid to another
   2. quebec hydro uses to calculate heatings costs