Peat Formation
What happens to dead plants that fall into water?
They form a layer at the bottom of the water.
What do sugar molecules in peat represent?
Stored energy that can burn if heated.
What three elements are required for fire to start?
Heat, oxygen, and fuel.
What is permafrost?
Ground that stays frozen all year long.
How does global warming affect peat?
It thaws permafrost, allowing peat to dry and catch fire.
Why must the plants be underwater to form peat?
Wet, low-oxygen conditions slow down decay, preventing the plants from fully rotting.
What three elements are essential for sugar molecules in peat?
Carbon, oxygen, and hydrogen.
How does peat typically catch fire?
It usually ignites from heat and dryness
How does permafrost affect peat in the Arctic?
It keeps peat frozen, preventing decay and burning.
What gas is released when thawing peat contributes to global warming?
Carbon dioxide.
After 50 years, what environmental change occurs in the wetland?
More dead plants pile up, creating a soggy environment that supports new plant growth.
Why do sugar molecules stay mostly the same over time in peat?
Because of the wet, low-oxygen conditions that prevent decay.
What role does heat play in starting a fire with peat?
Heat initiates a chemical reaction that produces light and sustained combustion.
What happens to permafrost due to global warming?
It thaws, exposing peat to sunlight and heat.
How does the cycle of thawing and burning peat worsen global warming?
Thawing releases gases that contribute to warming, leading to more thawing and burning.
What happens after 1,000 years in peat formation?
Layers of dead plants and sediment build up, forming a bog or swamp known as peat.
How do sugar molecules contribute to peat's use as fuel?
They can burn when heated, releasing energy.
What gases are released when peat burns?
Carbon dioxide and other gases.
How does permafrost thawing contribute to peat fires?
Thawing allows peat to dry out and catch fire easily.
What are the long-term effects of peat burning on the environment?
Increased carbon emissions and accelerated global warming.
What are the primary components of sugar molecules found in peat?
Long chains of carbon, oxygen, and hydrogen.
What is the significance of the chemical reaction that occurs when peat burns?
It uses oxygen from the air to break apart molecules, releasing energy as heat and light.
What are "zombie fires" in relation to peat?
Fires that burn underground for months after peat thaws and dries out.
Why is permafrost important for peat preservation?
It helps maintain low temperatures that prevent peat from decaying.
Why is understanding peat important in the context of climate change?
It helps us comprehend the role of peat in carbon cycles and global warming.