Why does it matter? As greenhouse gas emissions from human activities increase, they build up in the atmosphere and warm the climate, leading to many other changes around the world—in the atmosphere, on land, and in the oceans.
As more greenhouse gases are produced, they accumulate in the atmosphere and absorb long wave counter radiation. (i.e. infra-red) More radiation is then radiated back towards Earth, causing enhanced warming.
How do greenhouse gasses contribute to global warming?
A greenhouse gas is any gaseous compound in the atmosphere that is capable of absorbing infrared radiation, thereby trapping and holding heat in the atmosphere. By increasing the heat in the atmosphere, greenhouse gases are responsible for the greenhouse effect, which ultimately leads to global warming.
Why is the greenhouse effect important?
‘Greenhouse gases’ are crucial to keeping our planet at a suitable temperature for life. Without the natural greenhouse effect, the heat emitted by the Earth would simply pass outwards from the Earth’s surface into space and the Earth would have an average temperature of about -20°C.
How do greenhouse gases cause climate warming quizlet?
⦁ The warm surface of the Earth gives off infrared waves. Greenhouse gases block many of these infrared waves, keeping them inside our atmosphere and heating up the Earth. … When snow melts, the darker exposed surface of the earth absorbs more sunlight, causing the Earth to heat up.
How does the greenhouse effect work?
The greenhouse effect is a natural process that warms the Earth’s surface. When the Sun’s energy reaches the Earth’s atmosphere, some of it is reflected back to space and some is absorbed and re-radiated by greenhouse gases. … The absorbed energy warms the atmosphere and the surface of the Earth.
What is the greenhouse effect and what causes it?
greenhouse effect, a warming of Earth’s surface and troposphere (the lowest layer of the atmosphere) caused by the presence of water vapour, carbon dioxide, methane, and certain other gases in the air. Of those gases, known as greenhouse gases, water vapour has the largest effect.