Which type of energy?
Energy that moves an object.
Mechanical enegry
Energy stored in the nucleus of an atom, released when the nuclei are combined or split.
Nuclear energy
States that energy can neither be created nor destroyed, only converted from one form of energy to another.
Law of conservation of energy
Gain or lose electrons through friction or rubbing together
Static electricity
A form of energy that results from charged particles, which can be carried by wires.
ELectricity
Energy from the movement of particles. Heat is created when particles move quickly.
Thermal
Occurs when atoms are split to release energy. This happens in the Earth’s core and powers the movement of continents.
Nuclear fission
What is the input energy for an electric guitar? What is the output energy?
Input: Electrical (plug it into the wall with a wire), mechanical (move the strings to make it work).
Output: Mechanical (include sound)
Static electricity
If a sweater has:
5 electrons
2 protons
What is the charge of the sweater?
Negative
Produced when an atom gains or loses an electron.
Electrical charge (Static or current)
Energy that travels in waves, such as visible light or x-rays.
Radiant energy
occurs when atoms are fused together to release energy. This happens in the Sun’s core and explains why the Sun is so hot.
Nuclear fusion
What is the input and output energy of a flashlight?
Input: Chemical (use batteries, which use a chemical reaction to work)
Output: Radiant
What are two differences between static and current electricity?
Static:
-Can be produced naturally (eg. lightning, friction)
-Build-up of electrons
-Does not need a circuit
Current:
- Requires a load, conductor, and power source
- Steady flow of electrons
- Requires a primary energy source
Electrical charges can also be moved in a stream or path through conducting materials
Current electricity
Energy delivered by electrons, usually moving through a wire.
Electrical energy
What is an example of chemical energy?
Food digesting, burning wood, plants using sunlight ect.
What is the input energy of a human? What is the output energy?
Input: Chemical (we digest food using the calories for energy)
Output: Mechanical (we can move - run, jump), thermal (keeps us warm - don't eat enough you can't make heat)
How are static and current electricity the same?
Both are a form of electricity
Where the energy in the circuit comes from. A battery is an example of a power source.
Power source
Energy stored in bonds of atoms and molecules, often released when heated.
Chemical energy
Example of electrical energy
Static electricity, Lightning, Generator, a lamp plugged in
What is the input energy and output energy of a solar panel?
Input: Radiant (uses the light from the sun)
Output: Electrical (generates electricity)
Give an example of static electricity and an example of current electricity.
Static: Lightning, combing hair and hair sticks up, shocked by doorknob
Current: a lamp, tv plugged in, charging phone
The thing in the circuit that is using the electricity. An example of a load could be a lightbulb, toaster, or blender.
The thing in the circuit that is using the electricity.
An example of a load could be a lightbulb, toaster, or blender.