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Energy is the fundamental ability to cause change, manifesting in various forms, including thermal, light, sound, and mechanical energy. For instance, when a pot boils, it gains heat energy, while a bowling ball loses mechanical energy upon striking the pins. The sun serves as the primary source of light energy, which also generates heat, while sound energy initiates from vibrations. This exploration invites you to reflect on daily tasks and identify the types of energy involved, enriching your awareness of how energy influences our surroundings and activities.
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A Change is Going to Come Energy at Work
What is Energy? • Energy is the ability to cause change
Objects can gain energy.A pot boiling is gaining heat energy.
Objects can lose energy.A bowling ball loses mechanical energy when it hits the bowling pins.
Energy appears in many forms. • heat/thermal • light • sound • mechanical
Thermal Energy • Moves molecules • Is felt as heat
Light Energy • The primary source of light energy is the sun • Light energy produces heat
Sound Energy • All sound begins when something vibrates
Mechanical Energy • The energy of motion
You Decide • Which tasks have energy? • If so, what kind of energy? Thermal Light Sound Mechanical
