Renewable Nonrenewable

Radiant Electrical Chemical Thermal Nuclear Magnetic Sound Mechanical

Radiant energy is also called electromagnetic energy. Radiant energy is the movement of photons. All life on earth is dependent on radiant energy from the sun. Examples of radiant energy include radio waves (AM, FM, TV), microwaves, X-rays, and plant growth. Active solar energy uses photovoltaic panels and light to turn radiant energy into chemical energy.

Chemical energy is the energy stored in the bonds of atoms and molecules. This a form of potential energy until the bonds are broken. Fossil fuels and biomass store chemical energy. Products that contain chemical energy include: TNT, baking soda, and a match. Biomass, petroleum, natural gas, propane and coal are examples of stored chemical energy.

Electrical energy is the movement of electrons. Lightning and static electricity are examples of electrical energy that occur naturally. Science hasn't found a way to use natural forms of electrical energy, like lightning. Instead, we use different energy sources to create electrical energy by using generators and turbines.

Nuclear energy is the energy stored in the nucleus of an atom. Nuclear energy is unusual in that it can give off energy in the form of light or heat, but it is the change in the atom's makeup that produces the energy. Submarines, power plants, and smoke detectors all use nuclear energy. Nuclear power plants use uranium, a radioactive element, to create electricity.

Thermal energy is the internal energy in substances-the vibration and movement of atoms and molecules within substance. Thermal energy is created in the movement of atoms. Boiling water, burning wood, and rubbing your hands together really fast are all examples of heat energy. Geothermal and passive solar are sources of heat energy, but biomass (a type of chemical energy) can be burned to produce heat energy.

Sound energy is the movement molecules in the air that produces vibrations. Alarms, music, speech, ultrasound medical equipment all use sound energy. VCR tapes change sound energy into electrical energy. The electrical energy records the sound using magnetic tape. Speakers read the magnetic tape and change it back into sound.

Mechanical energy is the movement of machine parts. Mechanical energy is also the total amount of kinetic and potential energy in a system. Wind-up toys, grandfather clocks, and pogo sticks are examples of mechanical energy. Wind power uses mechanical energy to help create electricity. Potential energy + Kinetic energy = Mechanical energy

Magnetic energy is the attraction of objects made of iron. Medical equipment, compass, refrigerator magnets are all examples of magnetic energy. Any type of energy source that uses a generator in the process to make electricity uses magnetic energy.

Kinetic and Potential Energy Kinetic energy-the energy that an object possesses due to its motion  the amount of energy needed to accelerate a body of a given mass from rest to its final velocity. (Electric; Motion; Radiant; Sound and Thermal [heat] Energy) Potential energy- the amount of stored energy an object possesses  determined by the mass of an object and how high off the ground it is. (Gravitational Potential Energy; Nuclear; Stored Mechanical; Chemical)

Potential or Kinetic? Batteries Stored Chemical Energy Toy Mechanical Kinetic Energy Gravitational Potential Energy Kinetic Energy

Potential or Kinetic? Stored Potential Energy Kinetic Energy Stored Nuclear Energy Kinetic Heat Energy

Kinetic energy exists whenever an object which has mass is in motion with some velocity. Everything you see moving about has kinetic energy. The kinetic energy of an object in this case is given by the relation: m=mass of the object V=velocity of the object The greater the mass or velocity of a moving object, the more kinetic energy it has.

Calculating Kinetic Energy Practice 1.You throw a basketball that has a mass of 3.4 kg. It leaves your hand with a velocity of 13.5 m/s. Calculate the amount of kinetic energy the basketball has. 2. A baby stroller is sitting at the top of a hill. The stroller and the baby have a combined mass of 32 kg and reach a velocity of 46.1 m/s at the bottom of the hill. Calculate the amount of kinetic energy the baby and stroller have. 3. A mass of 12.4 kg moves at a rate of 5.96 m/s. Calculate the kinetic energy of the mass. 4. A mass of 3.2 kg moves down a 2.45 meter ramp in 2.1 seconds. Calculate the kinetic energy of the mass.

Potential energy exists whenever an object which has mass has a position within a force field. The most everyday example of this is the position of objects in the earth's gravitational field. The potential energy of an object in this case is given by the relation: PE = Energy (in Joules) m = mass (in kilograms) g = gravitational acceleration of the earth (9.8 m/sec2) h = height above earth's surface (in meters)

Calculating Potential Energy Practice 1.A baby carriage is sitting at the top of a hill that is 78 meters high. The carriage and the baby have a combined mass of 31 kg. Calculate the amount of potential energy that the baby and carriage have. 2.A cinder block is sitting on a platform 30 meters high. It has a mass of 78.9 kg. Calculate the amount of potential energy that the block has. 3.There is a bell at the top of a tower that is 37 meters high. The bell weights 230 N. Calculate the amount of potential energy the bell has. 4.A roller coaster is at the top of a 120 meter hill and weights 1,350 N. The coaster at this particular moment has how much potential energy?

Law of Conservation of Energy- Energy can neither be created nor destroyed. Energy is always changing from one kind to another. The total energy of an object never changes. Potential energy + Kinetic energy = Total energy and Total energy – Kinetic energy = Potential energy and Total energy - Potential energy = Kinetic energy