Teacher manual for Advanced Environmental and Earth Sciences labs. Has both the printed version and a flash drive with teacher tips, a PDF of teacher version and editable Word student version.
Energy Content of Food
Use a fast response temperature sensor to investigate and compare the energy content of four different food items: marshmallow, popcorn, peanut, and cashew.
Students investigate and compare the energy content of energy-rich substances (foods) to determine:
- How much energy is stored in some common food items.
- What type of food contains the most concentrated amounts of energy.
Students measure the energy released from different types of foods by oxidative combustion (burning) through energy transfer into water in a closed container (calorimeter). From this they:
- Calculate the amount of heat released from the food item based on the change in temperature of the water in the calorimeter.
- Calculate the total amount of energy stored in each piece of food.
Sensors / Equipment Used:
MultiMeasure sensor that incorporates pH, conductivity, temperature, and the optical dissolved oxygen probe.
Aluminum pie pan 4
Aluminum soda can 4
Cardboard box, large 1
Electronic balance - 1 per class
Food samples: marshmallow, popcorn, peanuts, cashew - 1 each
Graduated cylinder, 100 mL
Large base and support rod
One-hole rubber stopper, ~1 1/2"
top diameter - 4
Paperclip, large - 5
Rod and clamp
Tape - 1 roll
Water - 200 mL
Wooden matches (or starter wand) - Several
The Associated Bundle:
Standard bundle for Advanced Environmental and Earth Sciences Teacher Guide,