Body Temperature Energy and Heat Loss

Body Temperature Energy and Heat Loss
Body Temperature Energy and Heat Loss
1. When a particular energy value is ascribed to a food, what type of energy is being
referred to? Its:
A. Translational kinetic energy
B. Gravitational potential energy
C. Chemical potential energy
D. Average kinetic energy per molecule
2. Energy may be defined from the concepts of:
A. Force and heat
B. Heat and joules
C. Force and work
D. Work and temperature
3. Which of the following statements about work is NOT correct?
A. More work occurs when a force acts over a small distance (W = F ÷ s).
B. Simple machines allow us to perform work more easily.
C. Work (done on an object) is the amount of energy that transfers to that object.
D. It takes energy to perform work.
4. Work is done when an object is moved by a force. What is energy?
A. The capacity to do work
B. The rate at which work is done
C. A force that results in no movement
D. The transformation of work from one form to another
5. The Système International (Standard International) unit of power is the watt.
This unit is the same as which one of the following?
A. Electronvolt
B. Joule
C. Joule per second
D. Kilojoule
Body Temperature Energy and Heat Loss
6. Which one of the following statements best describes what is meant by the “principle of conservation of energy”?
A. Internal energy is the sum of kinetic energy, thermal energy and potential
energy.
B. Energy may be transformed from one form into another, but it cannot be created or destroyed.
C. Kinetic energy is gradually transformed into potential energy and vice versa.
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D. The Earth has a finite amount of energy, and modern society must learn to
use less of it and to use it more efficiently.
7. A ball initially with 20 J of potential energy has rolled halfway down a slope and
is still moving. Which of the following values of kinetic energy (KE) and gravitational potential energy (PE) is it likely to have?
A. 0 J of KE and 0 J of PE
B. 0 J of KE and 10 J of PE
C. 10 J of KE and 10 J of PE
D. 10 J of KE and 0 J of PE
8. Which one of the following statements does NOT accurately describe energy?
A. Energy can be created but not destroyed.
B. The total amount of all types of energy remains constant.
C. The energy gained by an object is the amount of work done on the object.
D. Energy is the heat given out when oxidation occurs.
9. What is a person’s metabolic rate defined as? The rate:
A. Of energy utilisation by their body
B. Of energy utilisation by their body during “absolute rest”
C. At which they consume oxygen
D. At which they produce heat
10. Consider a person whose diet provides a daily energy intake of 10,500 kJ and
whose daily activities result in their body consuming 9500 kJ of energy daily.
If this situation continues for several months, the possible outcome would be:
A. A gradual rise in basal metabolic rate.
B. The person increases their mass by several kilograms of fat tissue.
C. The energy requirements of daily activities will rise to consume 10,500 kJ.
D. An increase in radiation from the body to dissipate excess energy.
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