Food and energy
What do the photovoltaic array and the tomato plant, shown in the images below, have in common?
The Answer:
They both convert sunlight, (radiant energy), into forms useful to humans. The photovoltaic array absorbs solar energy and stores it as chemical potential energy in batteries. The leaves of the tomato plant absorb solar energy which is (mainly) stored as chemical potential energy in compounds called carbohydrates.
They both convert sunlight, (radiant energy), into forms useful to humans. The photovoltaic array absorbs solar energy and stores it as chemical potential energy in batteries. The leaves of the tomato plant absorb solar energy which is (mainly) stored as chemical potential energy in compounds called carbohydrates.
We get energy from the food we eat. Do you remember that the plants make sugar (glucose)?
There is a lot of energy in glucose. When we eat, our body gets this energy.
Calorie: a measurement used by nutritionists to define the energy-producing potential in food.
Calories=energy in your food.
There is a lot of energy in glucose. When we eat, our body gets this energy.
Calorie: a measurement used by nutritionists to define the energy-producing potential in food.
Calories=energy in your food.
You can find Nutrition Facts label on every box/bag of food items.
How many calories are in one bowl of this food item?
How many calories are in one bowl of this food item?