Potential and Kinetic Energy
What happens to the potential and kinetic energy as a ball rolls down a ramp?
Potential energy is converted to kinetic energy
this word means work or force; some examples are potential and kinetic
energy
Riding a bike is an example of this kind of energy.
kinetic energy
Energy can not be created or destroyed, only changed into a different form of energy. This is known as _______
the law of conservation of energy
A 5 kg pendulum bob is held at 5 meters above the floor. How much energy does it have?
200 joules
If you imagine a drop of water about to fall down a waterfall, at the top of the waterfall the drop of water has this kind of energy.
Potential Energy
this form of energy cooks food in boiling water
thermal/heat energy
When is the kinetic energy the greatest on a roller coaster?
At the fastest speed
Thermal energy flows from _____ to ______
warm to cold
A 5 kg pendulum bob is held 5 meters above the floor. How much kinetic energy does it have?
0 joules
This type of energy is present in a battery.
Chemical Potential energy
This is the energy of motion.
kinetic energy
How can a roller coaster gain potential energy?
Go higher
In producing electricity explain the transfer of chemical energy to thermal energy.
Energy in coal is chemical energy. When coal is burned the energy is released heat.
A 5 kg pendulum bob is 0 meters above the floor. How much potential energy does it have?
0 joules
Which of the following is not a type of potential energy?
Gravitational, Elastic, Chemical, Thermal
Thermal
Gas particles have the most ______ and move the _____ and have the highest ______________.
energy, fastest, temperature
A hair dryer transforms _______energy to _____
electrical to heat
In producing electricity explain the transfer of thermal energy to mechanical energy.
Thermal energy is used to change to the state of matter of water from a liquid to a gas. The gas is then run through a generator to create mechanical energy.
A 5 kg pendulum bob was held at 5 meters above the floor. The bob was released. When the pendulum bob swings to the point it is 0 meters above the floor, how much kinetic energy will it have?
245 joules
When a ball is dropped the amount of potential energy will_________________ and the amount of kinetic energy will __________________.
Decrease, Increase
This is stored energy due to position.
potential energy
A glass of ice water sits on the table in the sun and warms to 32oC. Is heat gained or lost in the glass of ice water.
gained
In producing electricity explain the transfer of mechanical energy to electrical energy.
Mechanical energy from the spinning of a turbine causes copper wire to spin inside a magnet (electromagnet). The electromagnet the creates electricity.