Type of Energy
What is energy of motion?
mechanical energy
Wind turbines convert _________________ energy into electrical energy.
mechanical
As the mass of an object moving at a given speed decreases its kinetic energy will ______________________.
decrease
True or False
Scientific Law describes or predicts a natural phenomenon
True
Energy formed when an atom splits apart or when two atoms join to form one.
nuclear energy?
The type of Energy is stored and depends on mass and height
Potential Energy
This is an example of electrical energy being changed to radiant energy.
lamp/light bulb
As the speed of a falling object increases, its potential energy will _____________________.
decrease
This type of energy happens when work is done on an object.
Mechanical Energy
Energy from atoms vibrating.
Heat or Thermal energy
Type of energy that moving and depends on the speed of the object.
Kinetic Energy
A toaster heats toast up. This is an example of what type of energy transformation? (two steps)
Electrical to Thermal
When you drop a book on the floor, what happens to its original potential energy?
potential energy was transformed to kinetic
A device that transforms mechanical energy into electrical energy.
generator
Energy that originates from waves/vibrations from an object.
Sound Energy
Type of energy that depends on the flow of electrons
Electrical Energy
Explain the transformation that takes place when you turn on a flashlight. From the battery to the light. 4 steps
Chemical (of the battery) to electrical (flow of electrons) to radiant (of the light) to thermal ( the heat produced by the light)
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?
The basketball dropped from a height of 4m because it has more speed.
State the Law of Conservation of Energy
Energy can not be created of destroyed it can only be transformed.
This is a type of energy that travels in waves and can travel through empty space.
light energy
Type of energy stored in bonds of molecules
Chemical Energy
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
Chemical (coal) to thermal (heat released from breaking the bonds of coal to boil water)to mechanical ( the steam makes) to mechanical (turbine move) to electrical (the turbine is connected to a generator that make a flow of electrons)
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.
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.
Name 8 forms of energy
Light, Heat, Chemical, Nuclear, electrical, mechanical
As a roller coaster car goes down a hill, its potential energy ________________ and its kinetic energy _______________.
decrease and increase