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Define direct current. Current that does not reverse direction.
What is static charge? Buildup of electrical charge on an object.
Define the Law of conservation of energy. States that energy cannot be created nor destroyed, it can only change form.
What happens when you break an iron magnet into two pieces? You get two whole magnets. Each with a north and south pole.
What is temperature? The measure of the average kinetic energy of the particles in an object.
How are velocity and kinetic energy related? If you increase velocity, you increase kinetic energy, and vice versa.
Define circuit. A continuously flowing closed loop.
Why is cooper used in household wiring? Because cooper has low resistance.
Which pole of a compass points to the geographic north pole? The south pole.
What is an electromagnet? A current carrying wire wrapped around an iron ore. It only operates when the current is on.
If you put your hand under an infrared lamp you can feel the heat. What form of heat transformation is that an example of? Radiation.
What is the energy an object has due to its position? Potential energy.
How do magnets attract one another? The north pole of one attracts to the south pole of another... opposites attract.
What type of energy is "lost" in every energy transformation? Thermal energy.
List 3 conductors of electricity. Copper, gold, silver.
Where is the strongest magnetic field? Around the magnetic poles.
What is a circuit breaker used for? Designed to open an overloaded circuit and prevent overheating.
What kind of energy does a burning fire produce? Radiant- light and thermal- heat.
Define conductor. Materials that allows electrons to move through them easily.
What makes an electric field get stronger? The closer you get to a charge the stronger it gets.
Define alternating current. Current that reverses direction in a regular pattern.
Define series circuit. A path created for a current that only allows one route for the current.
How can you increase the strength of an electromagnet? By increasing the number of turns on the wire coil so that more current can flow.
Define insulator. Material in which electrons cannot move easily from place to place.
Define parallel circuit. Circuit that has two or more paths for electrons to flow.
How is temperature related to the speed of molecules? The higher the temperature, the faster the molecules.
What happens if you change the current of an electromagnet? Changing the current changes the strength and direction of an electromagnet.
Why are atoms normally electrically nuetral? Because there are equal numbers of protons and electrons.
Define electric current. The steady flow of electrons through a conductor.
What happens if you move a wire through a magnetic field? It creates an electric current.
kinetic energy The energy an object has due to its motion.
potential energy the energy an object has due to its position.
mechanical energy The total energy of motion and position of an object.
Thermal energy The total potential and kinetic energy of the particles that make up an object.
chemical energy Potential energy stored in the chemical bonds that hold compounds together.
radiant energy Energy carried by an electromagnetic wave.
electrical energy The energy of moving electrons.
Sound energy Energy caused by an object's vibration.
Nuclear energy Energy stored in the nucleus of an atom.
Law of Conservation of Energy States that energy is neither created nor destroyed, it only changes form.
Temperature A measure of the average kinetic energy of the molecules.
Created by: jessica.porter