green-house gases Flashcards
Name three main greenhouse gases.
Carbon dioxide (CO₂), methane (CH₄), and water vapor (H₂O).
What is the most common greenhouse gas caused by humans?
Carbon dioxide (CO₂) – it comes from burning fossil fuels like coal, oil, and gas.
How does methane (CH₄) get into the air?
From cows, landfills, and natural gas leaks. It traps a lot of heat, even more than CO₂!
What is the greenhouse effect?
the greenhouse effect is when greenhouse gases trap the sun’s heat, making the Earth warmer.
:What would happen if there were no greenhouse gases?
The Earth would be too cold for humans, animals, and plants to survive.
Why is too much greenhouse gas bad?
It causes global warming, leading to climate change, stronger storms, and rising sea levels.
What human activities increase greenhouse gases?
Burning fossil fuels, deforestation, farming, and landfill waste.
What are fossil fuels?
Coal, oil, and natural gas – they are burned for energy but release CO₂.
How does deforestation contribute to global warming?
Trees absorb CO₂, so cutting them down means more CO₂ stays in the air.
What is global warming?
The increase in Earth’s temperature due to too many greenhouse gases.
How does climate change affect the planet?
It causes hotter temperatures, ice melting, rising sea levels, and extreme weather.
What is the difference between climate change and global warming?
Global warming is just about Earth getting hotter, but climate change includes changing weather, storms, and ice melting.
What is the biggest source of carbon dioxide?
Burning fossil fuels for electricity, transport, and factories
How does water vapor act as a greenhouse gas?
Water vapor traps heat naturally, but more heat means more evaporation and even more water vapor in the air!
How do cows contribute to greenhouse gases?
Cows release methane (CH₄) when they digest food.
What are renewable energy sources?
Solar, wind, hydro (water), and geothermal energy – they don’t produce greenhouse gases!
What is the Paris Agreement?
A global plan where countries promise to reduce greenhouse gas emissions.
How can YOU help reduce greenhouse gases?
Walk or bike instead of driving, use less electricity, eat less meat, and plant trees!
what is population
the number of organisms of a single species
what is community?
a group of organisms of different species
what is habitat
the place where and organism lives
what is ecosystem?
a system of living organisms interacting with each other and with a physical environment.
what is biodiversity
the variety of living things
