Guess the Word
I’m a gas that comes from animals or rubbish. People can burn me to make energy.
Methane
What is a renewable energy source?
A source we can use again and again, like wind or sunlight.
What is it called when people cut down lots of trees?
deforestation
What is one problem with growing energy crops?
Farmers grow less food.
I’m made from corn or sugar. People use me to run cars.
Ethanol
What is biomass made from?
Plants, trees, garbage, and animal waste.
What can happen to rivers and land when we use too many chemicals on farms?
pollution
What is a problem when we move biomass far away?
It causes pollution.
Farmers grow me to make energy, not to eat.
Energy crop
What does “carbon-neutral” mean?
It means the amount of carbon dioxide you put out is the same as the amount you take in.
What are greenhouse gases?
Gases like CO₂ that trap heat and make the Earth warmer.
Why is moving biomass not good?
It uses a lot of fuel.
I’m a type of fuel. I come from plants, not oil. Trucks and buses can use me.
Biodiesel
What does photosynthesis do in plants?
It helps plants use sunlight to make food and take in carbon dioxide.
What kind of waste can be used to make energy?
Garbage, food waste, and farm waste.
Why is biomass not always clean energy?
It still creates CO₂.