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The Science Of Energy Balance Calorie Intake and Physical Activity.

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Presentation on theme: "The Science Of Energy Balance Calorie Intake and Physical Activity."— Presentation transcript:

1 The Science Of Energy Balance Calorie Intake and Physical Activity

2 Bell Work 1.What is Energy? 2.Do living things require energy? 3.How do living things get their energy?

3 Things that living things do that use energy

4 Metabolism Basal Metabolism – the sum of all chemical reactions occurring in the body Basal Metabolic Rate (BMR) - The base level of energy required to maintain basic body functions Typical teens use 60 to 70 percent of their energy to maintain normal body function

5 Do all activities require the same amount of energy? Energy required to perform different activities varies What determines how much energy you use in a physical activity? Energy use is determined by both the intensity and the duration of the activity. Energy use is also determined by body size.

6 Bell Work 1. Explain basal metabolism. 2. What activities require a lot of energy? 3. What activities require little energy? If you forgot to finish your energy log complete it now.

7 Food Calorie Equal to 1,000 calories or 1 kilocalorie (kcal) Unit of heat energy 1 kcal is the amount of energy needed to raise a liter of water 1 degree Celsius

8 Website Class Codes ergy/activities/activities_toc.htm ergy/activities/activities_toc.htm 1 st Hour: gray nd Hour: red th Hour: gray th Hour: silver ergy/guide/nih_energy_masters.pdf ergy/guide/nih_energy_masters.pdf

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