Types of Energy
Explain the transformation that takes place when you rub your hands together. Explain the type of energy and where it comes from. 3 steps
What is kinetic chemical (from braking down bonds in food) to kinetic mechanical (movement of the hands) to kinetic thermal (heat produced from friction)
We could add potential chemical (non-eaten food) to kinetic chemical ..................................
As the mass of an object moving at a given speed decreases its kinetic energy will ______________________.
What is decrease
Explain the transformation that takes place when you turn on a flashlight. From the battery to the light. Explain the type of energy and where it comes from. 4 steps
What is potential Chemical (of the battery) to turn on switch kinetic chemical to kinetic electrical (flow of electrons) to kinetic radiant (of the light) to kinetic thermal ( the heat produced by the light)
As the speed of a falling object increases, its potential energy will _____________________.
What is decrease
An energy source that is used up faster than is can be replaced. (not an example)
What is a nonrenewable resource
Explain the transformation of a book falling from table. Explain the type of energy and where it comes from. 3 steps
What is Potential mechanical ( due to the position of the book) to kinetic mechanical ( motion of the book) to kinetic thermal ( the friction between the book and the air)
When you drop a book on the floor, what happens to its original potential energy?
What is the potential energy was transferred to kinetic mechanical and kinetic thermal energy and kinetic sound (thermal and sound are dissipated energies)
Explain the transformation of energy that occurs in a coal burning power plant. List the type of enrgy and where it comes from. 5 steps
What is potential Chemical (coal not heated) to kinetic chemical (burned coal) to kinetic thermal (heat released from breaking the bonds of coal to boil water) to kinetic mechanical ( the steam makes a turbine move) to kinetic electrical (the turbine is connected to a generator that make a flow of electrons)
A basketball is dropped from a height of 2m and another identical basketball is dropped from a height of 4m. Which ball has more kinetic energy just before it hits the ground and how many times greater is it? Support with evidence
What is The basketball dropped from a height of 4m; it is 4times more energy.
Explain the transformation that takes place to make a toaster work using a wind turbine. Begin with the sun. List the type of energy and explain where it comes from.
What is kinetic radiant to kinetic thermal energy (from the sun) to kinetic mechanical energy ( the heat caused the wind to move and the blades to spin) to kinetic electrical ( the turbine turns a generator and makes a flow of electrons) to kinetic thermal ( heat from the toaster) to kinetic radiant ( when the toaster get hot enough it will emit light)
When you drop a tennis ball, it hits the floor and bounces back up. But, it does not reach the same height as before and each time bounce is smaller than the previous one. However, you notice the tennis ball is slightly warmer after it finishes bouncing. Explain how the law of conservation of energy is obeyed.
What is During each bounce, some of the kinetic energy of the ball in transferred into thermal energy. As a result, energy is not created or destroyed, but only changes form so that the law of conservation of energy is obeyed.