Layers of a Star
Which layer radiates energy from the core to the convection zone?
Radiation Zone
What is the energy of motion?
Kinetic Energy
A stove is hot to the touch. What type of energy is present?
Thermal
HgO → Hg + O2
2:2:1
Putting gas in your car to give it the power to drive shows which conversion of energy?
Chemical → Mechanical
Which layer uses convection to transfer energy from the radiation zone to the photosphere?
Convection Zone
Mechanical energy is the combination of _____ & _____ energy.
Kinetic & Potential
Chewing food then digesting it is an example of which type of energy?
Chemical
N2 + H2 ---> NH3
1:3:2
Sunlight from the sun powers photosynthesis (creates food for plants). This shows which energy conversion?
Light → Chemical
What is the role of the core?
It radiates energy from the innermost part of the star to the radiation zone.
_____ energy is caused by vibrations.
_____ energy can be detected by our sight.
Sound
Light
A roller coaster pauses at the top of a hill, then plummets down at 75 m/s. What type of energy is best exemplified by this example?
Mechanical Energy
H2 + O2 → H2O
H2O2 → H2 + O2
2:1:2
Balanced
When you plug a microwave into the wall, it has _____ energy, which is converted into _____ energy to heat your food.
Electrical → Thermal
What is the role of the photosphere?
It radiates energy out into space.
_____ energy is stored energy because of an object’s position or state.
If an object is placed in a high position, it has _____ energy.
Potential
Gravitational
A stretched rubber band has _____ energy. When it’s released & moves back to its normal position, it has _____ energy.
Elastic
Kinetic
Fe + O2 ---> Fe2O3
4:3:2
When a stretchy object is stretched, it has _____ potential energy. Once it is released & begins to move, the energy becomes _____.
Elastic → Kinetic
What is the order of star layers from the innermost to the outermost layer?
Core → radiation zone → convection zone → photosphere
Movement of molecules in an object is _____ energy.
Energy stored inside an atom is _____ energy.
Thermal
Nuclear
Moving an electron to a place of negative charge is an example of which type of energy?
Electrical
N2 + O2 → N2O3
2:3:2
What is the Law of Conservation of Energy?
Energy can’t be created or destroyed; it only changes form.