Temperature and temperature Scale
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Questions and Answers

What is the temperature of the sun's surface in Kelvin?

  • 5000 K
  • 8000 K
  • 7000 K
  • 6000 K (correct)

What is the temperature at which hypothermia becomes life-threatening?

  • 37°C
  • 30°C
  • 32.2°C (correct)
  • 35°C

What is the normal body temperature range during Stage 1 of hypothermia?

  • 37-39°C
  • 35-37°C (correct)
  • 39-41°C
  • 33-35°C

What is a symptom of a person entering Stage 2 of hypothermia?

<p>Inability to touch their thumb with their little finger (A)</p> Signup and view all the answers

What is the body temperature range during Stage 2 of hypothermia?

<p>33-35°C (D)</p> Signup and view all the answers

What is the unit of temperature in the Wien Displacement law?

<p>K (Kelvin) (A)</p> Signup and view all the answers

What is the normal range of body temperature for an average person?

<p>98°F (37°C) to 100°F (37.8°C) (B)</p> Signup and view all the answers

What is the condition called when your body temperature falls to 95°F (35°C) or lower?

<p>Hypothermia (B)</p> Signup and view all the answers

What is the term for the process of heat loss through sweat evaporation?

<p>Evaporation (B)</p> Signup and view all the answers

Which of the following can raise your internal body temperature?

<p>Fever (C)</p> Signup and view all the answers

What is the part of the brain that controls thermoregulation?

<p>Hypothalamus (C)</p> Signup and view all the answers

What is the term for the process of heat loss through direct contact with an object?

<p>Conduction (A)</p> Signup and view all the answers

What is the result of surface blood vessels contracting further in a person experiencing hypothermia?

<p>The body focuses its remaining resources on keeping the vital organs warm (A)</p> Signup and view all the answers

At what temperature does shivering usually stop in a person experiencing hypothermia?

<p>Below 32°C (D)</p> Signup and view all the answers

What is the result of cellular metabolic processes shutting down in a person experiencing hypothermia?

<p>Major organs start to fail (C)</p> Signup and view all the answers

What is the purpose of thermoregulation in the human body?

<p>To maintain a constant body temperature (C)</p> Signup and view all the answers

What is the characteristic of a person's skin when their body temperature drops below 30°C?

<p>It becomes blue and puffy (C)</p> Signup and view all the answers

What is the state of equilibrium that the body strives to maintain through thermoregulation?

<p>Homeostasis (D)</p> Signup and view all the answers

What happens when your internal temperature becomes too low or high?

<p>It sends signals to your muscles, organs, glands, and nervous system (C)</p> Signup and view all the answers

What role does the hypothalamus play in thermoregulation?

<p>It receives messages from the central nervous system (B)</p> Signup and view all the answers

What happens to blood vessels under the skin when the body needs to cool down?

<p>They get wider (A)</p> Signup and view all the answers

What is the function of thermogenesis in thermoregulation?

<p>To produce heat in the body (C)</p> Signup and view all the answers

What is the result of vasoconstriction when the body needs to warm up?

<p>The blood vessels become narrower (D)</p> Signup and view all the answers

What is the function of hormonal thermogenesis in thermoregulation?

<p>To increase the body's energy production (A)</p> Signup and view all the answers

What is the freezing point of water on the Celsius scale?

<p>0°C (A)</p> Signup and view all the answers

What is the relationship between a temperature difference on the Celsius and Fahrenheit scales?

<p>ΔTF = 9/5 ΔTC (C)</p> Signup and view all the answers

What is the boiling point of water on the Fahrenheit scale?

<p>212°F (A)</p> Signup and view all the answers

What is the purpose of identifying two reproducible temperatures in creating a temperature scale?

<p>To establish a reference point for the scale (C)</p> Signup and view all the answers

What is the characteristic of an absolute temperature scale?

<p>It has a zero point at absolute zero (B)</p> Signup and view all the answers

What is the significance of the concept of absolute zero in temperature measurement?

<p>It is the lowest possible temperature (A)</p> Signup and view all the answers

The Kelvin scale is a relative temperature scale.

<p>False (B)</p> Signup and view all the answers

The freezing point of water is 273.15 K on the Kelvin scale.

<p>True (A)</p> Signup and view all the answers

The Kelvin scale is defined in terms of the freezing and boiling points of water.

<p>False (B)</p> Signup and view all the answers

Temperature differences are the same in units of kelvins and degrees Celsius.

<p>True (A)</p> Signup and view all the answers

The triple-point temperature is defined as 373.16 K.

<p>False (B)</p> Signup and view all the answers

The Kelvin scale is part of the SI system of units.

<p>True (A)</p> Signup and view all the answers

The degree sign is used with the Kelvin temperature unit.

<p>False (B)</p> Signup and view all the answers

The boiling point of water is 273.15 K on the Kelvin scale.

<p>False (B)</p> Signup and view all the answers

Absolute zero is defined as 0 K.

<p>True (A)</p> Signup and view all the answers

The Kelvin scale is commonly used in everyday activities.

<p>False (B)</p> Signup and view all the answers

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