Keep Cool-Stay Warm Project

Challenge from Chernivtsi School #22, Ukraine

 

Answer the Questions

1. Which electric appliances we use at home? Which of them are constantly on and which are on from time to time? What actions can we take to help save electricity when we use home appliances?

 

2. Can you calculate how much energy a chandelier consumes in an hour if it has 5 bulbs, 60 watt each?

 

3. You don’t need to use lighting for the desk at daytime. When is the best time to do your homework?

 

4. If you fold your clothes neatly after school, they don’t need to be ironed. That is why it helps….

 

5. Through which part does the house loose most of its warmth? What can you do to reduce it?

 

6. There are three types of lamps: incandescent lamp, fluorescent lamp and LED lamp. Which of them is the most energy-saving?

There are 30 fluorescent lamps in our gym which consume 36 watts per hour. Calculate how much energy the gym consumes in 4 hours?

How much would it consume if the lamps were incandescent, 100 watts each?

 

7. Do you know how many percent of sunlight is absorbed by dirty windows? Residents of which house would consume less energy: the one that is near the motorway or the one that is further from it? Why?

 

What is Wrong?

1. While doing his homework, a boy switches on the light in the room, then switches on the lamp on his desk. He also likes to listen to music while doing his homework. He turns on a computer too, just in case.

 

2. A girl gets up in the morning and switches on the light in her room, then goes to the bathroom and turns on the water tap to wash. She brushes her teeth with the water on, washes her face and hands. She now goes back to her room, leaving the lights in the bathroom on because she intends to go back there soon.

 

3. Alex’s frig is next to the heater in the kitchen. Alex wants his boiled fruit drink to cool off sooner, so he puts it into the frig.

 

4. Natalie knows that personal hygiene is important for her health so she takes a bath twice a week.

 

5. While heating his dinner on the stove, Dmytro never puts the lid on the saucepan.

 

Choose the Correct Option

1. The alternative energy sources are:

a) windmill, solar panels

b) fluorescent and LED lamps

 

2. The best solutions to save heat in the house are:

a) hermetic window panes, insulated walls

b) cast-iron heater

c) the entrance door which tightly fits the doorway

d) air conditioner

 

3. The frig will consume less energy if it is placed…

a) near the window

b) near the stove

c) in the coolest place in the kitchen

d) near the heater