IPC Unit 7 Lesson 7
The circulatory system in the human body is an example of a(n) ___ energy system
Closed
In a closed energy system, energy is ______.
Conserved
The Sun makes energy through nuclear processes. This transforms into ___ energy that plants use for photosynthesis.
Light
Which description best explains energy transformations in a flashlight?
chemical → electrical → light
Which description best explains energy transformations when someone eats lunch and then runs?
chemical → kinetic → heat
What does the first law of thermodynamics state?
The first law of thermodynamics states that the internal energy in a system is equal to the heat added to the system minus work done by the system.
What does the law of conservation of energy state?
The law of conservation of energy states that energy cannot be created or destroyed.
Earth is an example of a(n) ___ energy system.
Open
In an open energy system, energy is ______.
exchanged with the space surrounding it
Even in a closed energy system, some energy will ______.
leave the system
