General Electricity
What are particles called that have a negative charge?
electrons
True or False: static electricity can build up when an airplane travels through the air
true
provide two examples of a source of electricity
battery, generator
Provide 2 specific examples of conductors
copper, steel, alumininum, etc.
True or false? All magnets are metals
false
what type of electricity do you have if electric charges are in motion?
current electricity
What happens if you held a charged balloon a centimeter away from a running faucet?
the water bends
a battery produces an electric current that flows in how many directions?
one
What can an electrical device change electricity into?
heat, light, motion, sound
List the three magnetic metals.
iron, nickel, cobalt
What is an electroscope?
An instrument used for detecting electric charges
What effect does a Van de Graaf generator have if you were to put both hands on it? Why does this happen?
your hair would raise. Since like charges repel, the hairs are pushed away from each other and the similarly-charged dome, causing them to stand up.
this power electricity source taps into the Earth's heat by using steam or hot water reservoirs beneath the surface.
geothermal
In which direction do electrons flow in a circuit (ie: the two ends of the battery?)
from the negative end to the positive end
What are magnets attracted to?
opposite poles attract. This means that the invisible between the magnets will force the poles together.
How many positive and negative charges does a neutral object hold?
an equal number
What is grounding?
a way to discharge a charge object by transferring the charges to the ground
name 5 methods of generating electricity. a hint for everyone is to think about our debate
solar, hydropower, nuclear, wind, fossil, coal
Mia is experimenting with different materials to see if they conduct electricity. She has a bulb, wires, and a battery. She tries using a piece of plastic, a piece of metal, and a piece of wood. When she connects each material in the circuit, the bulb only lights up for the metal. Explain why the bulb lights up for the metal and not for the plastic or wood. What does this tell you about the ability of these materials to conduct electricity?
The bulb lights up for the metal because metals are generally good conductors of electricity. In metals, electrons can move easily through the material, allowing the electric current to flow. Plastic and wood, on the other hand, are insulators. They do not allow the flow of electrons, so when Mia connects them in the circuit, the electrons cannot move, and the bulb does not light up. This tells us that metals are conductors of electricity, while plastic and wood are insulators, restricting the flow of electric current.
what affects the strength of a magnetic field in electromagnetism?
the greater the electrical current, the stronger the magnetic field. the closer an object is to the wire, the stronger the magnetic field is
Name two common materials that are good conductors of electricity
copper, iron, gold, aluminum, and silver
What are the two laws of static electric charges?
objects with unlike charges attract one another, objects with like charges repel each other
what is an electrode and electrolyte?
electrode are two metal plates that electric cells in a battery contain
electrolyte is the chemical mixture that all electric cells contain
Why wouldn't "closed circuit" be the correct term to use when trying to describe why the lights have turned off after pressing the switch?
because closing the circuit would mean that it is complete and therefore the lights should be on
Sarah is experimenting with a simple electromagnet. She wraps a wire around a nail and connects the ends of the wire to a battery. When the battery is connected, the nail becomes magnetic. Explain why the nail becomes a magnet in this setup, and what factors might affect the strength of the electromagnet.
The nail becomes a magnet when connected to the battery because the electric current flowing through the wire creates a magnetic field around the wire. This magnetic field induces magnetism in the nail, turning it into an electromagnet. The strength of the electromagnet depends on factors such as the number of wire turns around the nail and the size of the battery. Increasing the number of turns or using a larger battery generally increases the strength of the electromagnet.