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How we can measure the energy content in food?
One idea is to burn the food.
Name a variable needs to be controlled
Type of food, mass of food
Name a variable needs to be measured
Water temperature before and after
What else could affect the water's temperature rise?
Volume of the water
What ca be used to measure volumes accurately?
Measuring cylinder
What ca be used to measure the temperature of water?
Thermometer
What does it mean when the water's temperature rise is bigger?
It means the more energy the food contain.
What measuring instrument used to measure the mass of food?
electronic balance
The temperature rise variable to be.................
controlled, calculated or measured
Name the apparatus used to measure the energy in food.
test tube, thermometer, measuring cylinder..................
