Energy
What is the scientific definition of energy?
The ability to perform work
What is mechanical energy?
energy possessed by moving objects or objects that have the potential to move
What are the three basic parts of an atom? Of the three particles, which is the smallest?
1. electrons, protons, and neutrons
2. Electrons are the smallest
What is thermal energy?
The total amount of kinetic energy that an object's atoms or molecules possess
List the types of energy recognized by scientists
1. Mechanical
2. Chemical
3. Nuclear
4. Thermal
5. Electrical
6. Magnetism
7. Sound
8. Light
Name an object that uses wind to create electricity
Windmill
True or False: Each atom has the same number of electrons as protons
True
What is temperature?
A measurement of the average kinetic energy of an object's particles
What is Conservation of Energy?
Mass and energy cannot be created or destroyed, they can only change form
A stack of books on a table has what kind of energy and why?
A stack of books on a table has potential energy because it has the potential to move if the table is moved.
Our body takes chemical energy and turns it into...
Thermal and Mechanical
Hot and cold are what kind of measurements?
Qualitative measurements
Which type of energy can travel through space?
Light
What are the forms of potential energy?
Chemical, nuclear, and gravitational energy
Other than digestion, what is the most common way to release chemical energy?
combustion or burning
What are the three advantages to using nuclear energy?
1. It is more efficient
2. Uses less fuel
3. Very little pollution
What is Bioenergy?
Energy that comes from plant and animal matter.
True or False: mechanical energy only comes from nature
False: Man has designed a multitude of machines that perform work (power tools, kitchen appliances)
What are the four forms of energy used when converting coal into electricity
Chemical Energy->Thermal Energy->Mechanical Energy->Electrical Energy
True or False: fusion reactions are smaller than fission reaction
False: fission reactions are smaller than fusion reaction