,FIS2603 Assignment 2 (COMPLETE ANSWERS) Semester
1 2025 (739210) - DUE 17 April 2025; 100% TRUSTED
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Question 1 Evaporation is an important mechanism for
eliminating heat, particularly on a hot day or when exercising.
What are some of the negative consequences of this mechanism
of heat loss? [5]
Evaporation is indeed a vital mechanism for cooling the body,
especially in hot conditions or during physical exertion.
However, while it is essential for regulating body temperature,
there are several negative consequences associated with this
process. These consequences can become particularly
pronounced in extreme conditions or when evaporation is
excessive. Below are some of the key negative consequences of
evaporation as a heat loss mechanism:
1. Dehydration
Explanation: Evaporation of sweat from the skin surface
results in a loss of water from the body.
Consequence: Prolonged or excessive sweating can lead to
dehydration, especially when the water lost through
evaporation is not replaced. Dehydration can impair
physical performance, cause fatigue, dizziness, confusion,
and, in severe cases, lead to heatstroke, organ failure, or
even death.
2. Electrolyte Imbalance
, Explanation: Sweat contains not only water but also
electrolytes such as sodium, potassium, and chloride.
Consequence: When sweat is lost excessively through
evaporation, these electrolytes are also lost, leading to an
electrolyte imbalance. This can cause muscle cramps,
weakness, dizziness, and nausea. In severe cases,
electrolyte imbalances can result in conditions like
hyponatremia, which can be life-threatening.
3. Increased Risk of Heat Exhaustion or Heatstroke
Explanation: Evaporation is the body's primary cooling
mechanism, but when it becomes excessive or inefficient
(for example, in extremely humid environments where
sweat does not evaporate effectively), the body struggles to
cool itself.
Consequence: When the body cannot effectively cool
down through evaporation, core body temperature rises,
leading to heat exhaustion or heatstroke. Heat exhaustion
can cause weakness, excessive sweating, nausea, and
confusion, while heatstroke (a more severe condition) can
lead to unconsciousness, organ damage, and death.
4. Skin Damage
Explanation: Prolonged exposure to sweating and
evaporation can lead to skin issues.
Consequence: Continuous sweating can irritate the skin,
causing rashes (such as heat rash) or chafing. Over time,
this can damage the skin’s protective barrier and lead to
infections. In very hot conditions, the skin may become
dry, cracked, or inflamed due to excessive evaporation.
1 2025 (739210) - DUE 17 April 2025; 100% TRUSTED
Complete, trusted solutions and explanations….WE WISH
YOU A GOOD LUCK
Question 1 Evaporation is an important mechanism for
eliminating heat, particularly on a hot day or when exercising.
What are some of the negative consequences of this mechanism
of heat loss? [5]
Evaporation is indeed a vital mechanism for cooling the body,
especially in hot conditions or during physical exertion.
However, while it is essential for regulating body temperature,
there are several negative consequences associated with this
process. These consequences can become particularly
pronounced in extreme conditions or when evaporation is
excessive. Below are some of the key negative consequences of
evaporation as a heat loss mechanism:
1. Dehydration
Explanation: Evaporation of sweat from the skin surface
results in a loss of water from the body.
Consequence: Prolonged or excessive sweating can lead to
dehydration, especially when the water lost through
evaporation is not replaced. Dehydration can impair
physical performance, cause fatigue, dizziness, confusion,
and, in severe cases, lead to heatstroke, organ failure, or
even death.
2. Electrolyte Imbalance
, Explanation: Sweat contains not only water but also
electrolytes such as sodium, potassium, and chloride.
Consequence: When sweat is lost excessively through
evaporation, these electrolytes are also lost, leading to an
electrolyte imbalance. This can cause muscle cramps,
weakness, dizziness, and nausea. In severe cases,
electrolyte imbalances can result in conditions like
hyponatremia, which can be life-threatening.
3. Increased Risk of Heat Exhaustion or Heatstroke
Explanation: Evaporation is the body's primary cooling
mechanism, but when it becomes excessive or inefficient
(for example, in extremely humid environments where
sweat does not evaporate effectively), the body struggles to
cool itself.
Consequence: When the body cannot effectively cool
down through evaporation, core body temperature rises,
leading to heat exhaustion or heatstroke. Heat exhaustion
can cause weakness, excessive sweating, nausea, and
confusion, while heatstroke (a more severe condition) can
lead to unconsciousness, organ damage, and death.
4. Skin Damage
Explanation: Prolonged exposure to sweating and
evaporation can lead to skin issues.
Consequence: Continuous sweating can irritate the skin,
causing rashes (such as heat rash) or chafing. Over time,
this can damage the skin’s protective barrier and lead to
infections. In very hot conditions, the skin may become
dry, cracked, or inflamed due to excessive evaporation.
