# WORKSHEET 1 WHAT'S YOUR WEEKLY ENERGY USAGE

Document Sample

```					                         EARTH WATCH

WORKSHEET 1:
W H AT ’ S YO U R W E E K LY E N E R GY U S AG E ?
Calculate your weekly energy usage. You can use an electricity bill to          The average UK household
uses 86kWh or units of
calculate this. The bill will cover one month, a quarter (three months) or      electricity per week?
a year and will refer to units. One unit is equal to one kilowatt hour (kWh).   This is equivalent to making
toast continuously for over
QUESTION ONE: How much electricity do you use a week?                           three and a half days!

If using an electric bill, calculate your electricity usage by dividing the total number of
units on the bill by the time in weeks. (A month = 4 weeks, 1 quarter = 12 weeks, 1 year =
52 weeks). If you cannot see a bill, work with a friend or use the average figure above
(86 kWh per week).

Our weekly usage of electricity is                 units.

QUESTION TWO: How much CO2 is released when generating that electricity?

To solve this, take your answer from question one and multiply it by 0.454. This will give
you an answer in kilograms (kg).

Each week, our electricity releases                  kilograms of CO2 into the atmosphere.

QUESTION THREE: What if the rest of the world used the same amount of energy?

by 1.625 billion, or 1,625,000,000. This number is based on a population of 6.5 billion,
divided by the average number of people in a household (four).

If everyone in the world used the same amount of energy, the world’s weekly usage
would be                 units and             kilograms of CO2 would be released
into the atmosphere.

BONUS: Now consider that the equations above only include your electricity usage at
home each week (or month, quarter). But what about travel? Calculate the answers
question two and recalculate question three. Note: To convert miles to kilometres,
use M x 1.61 = KM

CAR        Petrol                           KM x .20 =                 kg
Diesel                           KM x .14 =                 kg
TRAIN      Intercity                        KM x .11 =                 kg
Local                            KM x .16 =                 kg
Underground                      KM x .07 =                 kg
AIR        European                         KM x .51 =                 kg
Long Haul                        KM x .32 =                 kg
TOTAL =                  kg

SECONDARY
EARTH WATCH

WORKSHEET 2:
LO CA L A N D G LO B A L – W H AT ’ S T H E B I G P I CT U R E ?

Directions:
In groups, complete the questions below, considering climate change and its local and
global impacts including: increased heat waves and warmer weather, increased ocean
warming and melting glaciers, the spread of diseases, shifts in plant and animal
populations, and increased heavy snowfall, flooding, droughts and fires. How are people
and their environments affected by climate change at different scales? What are the links
between human activity and environmental change?

The Issue: Climate Change

1.   How does it affect people in your area?

2.   How does it affect people in the country?

3.   How does it affect people in the world?

4.   How does it affect the environment?

5.   What are the causes of it?

6.   Are the effects the same for people around the world?

7.   What are the solutions to it?

8.   Are the solutions the same for people around the world?

9.   When something happens in one part of the world, does it affect people
in other places?

10. How is this a global issue?

SECONDARY

```
DOCUMENT INFO
Shared By:
Categories:
Stats:
 views: 9 posted: 6/15/2010 language: English pages: 2
How are you planning on using Docstoc?