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Kinetic and Potential Energy
Investigation 3
CELL Guide
Kinetic and Potential Energy
Phase 1 – Defined Understanding
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Phase 2 – Dynamic Understanding
► Investigation Three Summary – Lab Goals
In Investigation Three, you continued to explore forms of energy by analyzing the relationship between potential and kinetic chemical energy and the Law of Conservation of Energy. During this Investigation, you:
- Observed the results of chemical energy as baking soda and vinegar were combined.
- Measured the changing circumference of a balloon as it inflated to illustrate the transfer of potential chemical energy to kinetic chemical energy.
- Analyzed the direct relationship between the circumference of the balloon and amount of potential chemical energy and kinetic chemical energy.
► Investigation Three Summary – Learning Goals
Through these experiments, you concluded that:
- Chemical potential energy was converted to kinetic energy. An increase in chemical potential energy (caused by an increase in the volume of vinegar) showed an increase in both the kinetic energy of the chemical reaction (increase in bubbles and reaction speed) and the kinetic energy of the balloon (change in circumference from 0 cm to 9.5cm).
- The Law of Conservation of Energy says that energy can be converted from one form to another. The direct relationship between the amount of chemical energy (amount of vinegar) and the kinetic energy of the balloon (change in circumference) indicates that energy was conserved. If the Law of Conservation of Energy was not followed, there would not be a direct relationship between the energy conversions.
Launch Concept Slides/Annotations
Mathematics Concepts in This Investigation
- volume in mL
- mass in grams
- calculating circumference
- multiplication
- length in cm
- measuring mass
- sequential order
- comparing (non)measurable characteristics
- predict/verify size, shape, form
- patterns/trends
- (in)direct relationships
- greater than/less than/equal to
- (in)dependent variables
- line graph
- skip counting by 2
- decimals to the nearest tenth
- data table
- data analysis
- subtraction