What is the basic law of energy? (Answer in a few words)
Energy is the ability to do work or cause a change. It can't be created or destroyed, it just changes form. Energy transfers and transformations happen when energy moves from one place or form to another. Energy can be transferred through sound, light, heat, electricity, and more.
Energy Transfers and Transformations
Energy Transfer: The process of transferring energy from one system to another. Energy Transformation: The process of changing the form of energy, from one form to another. Energy Conservation: The process of conserving energy so that it can be used again in the future.
The total amount of energy in a system does not change, even when it is transferred from one object to another or transformed from one form to another. Energy can be transferred from one object to another through heat, light, sound, electrical currents, and mechanical processes. Energy is always conserved, even when it is converted from one form to another, such as when it is converted from potential energy to kinetic energy.
Did you know?
What are the different ways energy can be transferred in systems?
What are the different ways energy can be transformed in systems?
What do you think is the most effective way to conserve energy?
What have you learned about energy conservation today?
Brain break: Draw a monkey juggling bananas while dancing on top of a unicycle!
Question: In what ways can energy be conserved in a system? Clues: • Energy can be conserved when it changes form. • Energy can be conserved when it transfers from one object to another. • Energy can be conserved when a system is in equilibrium. In pairs: Select and solve one of the tasks: A. Create a drawing of a system where energy is conserved. B. In pairs, create a model of a system and explain how energy is conserved.
Which law states that energy cannot be created or destroyed, only transferred or transformed?
- Law of Thermodynamics
- Law of Conservation of Energy
- Law of Gravity
When a light bulb is turned on, what type of energy transformation occurs?
- Mechanical to Electrical Energy
- Electrical to Light Energy
- Light to Electrical Energy
What form(s) of energy does a moving car possess?
- Thermal Energy
- Kinetic Energy
- Potential Energy
In a simple pendulum system, what type(s) of energy conversions occur as the pendulum swings back and forth?
- Thermal to Mechanical
- Potential to Kinetic
- Kinetic to Potential
What happens to the total amount of energy in a closed system during an energy transfer or transformation?
- It remains constant
- It decreases
- It increases
Work together in pairs: What is one example of how energy can be transferred or transformed in a system?