Your Burger and The World

 Your Burger and the World symbol.
LESSON 2 ACTIVITY: Transforming Food Energy:
A Balancing Act (Form)
caution icon flame icon

Caution! Wear protective eyewear.
Use care around an open flame.
Follow the manufacturer's warning when using the calorimeter.


Record Sheet
Names of Group Members:________________________________________________

____________________________________Date: _______________

The engine of an automobile produces the energy needed to make the car move by combining the selected fuel with oxygen. You may have heard food called a fuel because it provides energy for your body. Does your body burn fuel like an automobile? When a fuel is burned it gives off some of its energy in the form of heat. Does the food you eat give off heat, too?

A calorimeter is an instrument used to measure the energy or heat contained in foods. In this activitgy you will compare the heat energy in different foods using the calorimeter your teacher provides or one you construct yourself.
1.

As you heat the food, what do you predict will happen to the temperature of the water? Why?

________________________________________________________________________

________________________________________________________________________
2. Does a caloriveter measure the energy in food directly or indirectly?
Explain your answer.________________________________________

________________________________________________________________________
3.

Design and carry out an experiment using the calorimeter to show that food contains energy.

a. Select two foods to be tested from those your teacher has provided. What problem will you investigate?
b. Form a hypothesis about the foods you will test and the problem identified in "a."
c. How will you use the thermometer to record the amount of energy in the food sample?
d. Record the Initial Water Temperature.
e. Follow the safety instructions and directions your teacher has given you. Light the food and record the time it takes to burn for up to 5 minutes. Record the Final Water Temperature at the instant the food finishes burning or at 5 minutes, whichever comes first. Record the burning time in minutes. What caused the change in temperature of the water?
f. Construct a data table that records the data you have gathered:
1) Type of Food
2)Mass of food in grams
3)Initial Water Temperature in degrees Cerlsius
4)Final Water Temperature in degrees Celsius
5)Burning Time in minutes
g. Complete the data table.
h. Analyze the data and draw conclusions. Did your data support your hypothesis? Share your conclusions with the class.

 

Enviro-TackleboxTM Logo
Click to return to the Enviro-TackleboxTM.

Link to the LPB Learning Port.
Click to return to the LPB Learning Port.

Link to LPB Interactive
Click to return to LPB Interactive.

Go to Real Media to download your FREE player!