Question

Select all the correct answers.

When people run quickly, they can sweat profusely. Their muscles undergo movement, and the loss of energy takes place. Based on this description, in which two ways is energy conserved when people run?

1. Heat energy is released from the body to the surroundings.

2. Heat energy is taken from the surroundings to the body.

3.Chemical energy is converted to mechanical energy that’s used for muscle movements.

4.Radiant energy is converted to mechanical energy that’s used for muscle movements.

5.Heat energy is converted to mechanical energy that’s used for muscle movements.

Answer 1

Heat energy is released from the body to the surroundings.

Chemical energy is converted to mechanical energy that’s used for muscle movements.

Explanation:

Answer 2

When we run, we sweat, which means we're getting hotter and hotter and our bodies need to cool down, which they do through transpiration (sweating). If we need to cool down, we need to release the heat that is in our bodies.

To run, we also need to move our muscles, which requires a specific type of energy, called mechanical or kinetic energy, which is the "energy of movement". In our bodies, we don't store that type of energy though, so we have to convert chemical energy to mechanical energy.

Answers:

⭕Heat energy is released from the body to the surroundings.

⭕Chemical energy is converted to mechanical energy that’s used for muscle movements.