Which uses less water, washing a full load of dishes by hand or in the dishwasher?

• Dishwasher

• By hand

Answer explanation

Information: Hand washing dishes can use up to 50 percent more water than a water-saving, energy efficient dishwasher. However, dishwashers made before 1994 consume more water than current models. You’re encouraged to search for appliances with the Energy Star label.

How many times can paper be recycled?

• One

• Six

• Three

What type of supermarket bag is more ecofriendly, paper or plastic?

• Paper

• None of the above

• Either is fine

• Plastic

Answer explanation

Information: Both the production and disposal of paper and plastic bags are harmful to the environment. Instead, bring your own reusable bags.

Why do we need to “go green”?

• We need to save money

• We need to save the Earth

• We need to earn more money

• We need to protect our school

Appliances that are turned off don't use any electricity.

• True

• False

Answer explanation

Information: Many appliances continue to use energy for features like clocks and remote controls sensors even when they’re turned off. The electricity still consumed by televisions that are turned off but still plugged.

Hybrid cars are slower and less safe than conventional cars.

• True

• False

Answer explanation

Information: Hybrid vehicles perform better than conventional vehicles in drivability and safety tests.

It is better to leave a lamp with a compact fluorescent light on than to turn it on and off several times a day.

• True

• False

Answer explanation

Information: It is always better to turn lights off when not in use. And there is no additional energy requirement for starting a CFL bulb.

Approximately how much global electricity output is produced from renewable sources?

• 1 percent

• 20 percent

• 10 percent

• 5 percent

Answer explanation

Information: Only about 10% of the world's energy comes from renewable sources. The remaining 92% comes from non-renewable resources such as oil, coal and natural gas.

What is the meaning of “ go green”?

• Encourage people to choose environmentally friendly behaviours

• Encourage people to waste energy

• Encourage people to damage the environment

• Encourage people to have more bad habits

What is 4Rs?

• Report

• Reason

• Reduce

• Return

Answer explanation

Information: 4rs stand for Reduce, Reuse, Recycle and Recover.