Question

Which of the following energy transformations occur when humans use energy from food to exercise?
A. Mechanical - thermal - chemical
B. Thermal - electrical - mechanical C.Radiant - mechanical - thermal
D. Chemical - mechanical - thermal​

Answer 1

Answer:

D. Chemical - mechanical - thermal​

Explanation:

Food contains chemical energy; when our bodies break down and digest food, the bonds that are broken apart release chemical energy. Our bodies convert this to mechanical energy to power movement, from movements as small as blinking or our hearts beating, to bigger movements like running or swimming. When we exercise or move, we also release heat which is thermal energy.

Answer 2

The energy transformations that occur when humans use energy from food to exercise is: D. Chemical - mechanical - thermal​.

What is energy?

Energy can be defined as the ability to do work. Thus, energy must be possessed or transferred to a physical object (body) before it can be used in doing a work or heating a system.

The forms of energy.

In Science, there are different forms of energy and these are;

• Gravitational energy

• Electrical energy

• Sound energy

• Chemical energy

• Thermal energy

• Mechanical energy

In conclusion, the energy transformations that occur when humans use energy from food to exercise is chemical energy to mechanical energy and lastly to thermal​ energy.

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