Electricity Flashcards
(19 cards)
How can energy be used in our everyday lives?
Energy powers things we use every day. This includes many places such as homes, businesses and industries as well as transportation, methods and electronics/appliances.
Order these from Lisa energy consumption to greatest: industrial, residential, transportation, commercial.
Commercial, residential, transportation, industrial
What is electricity?
Electricity is a form of energy that results from charge particles, which can be carried by wires.
How are electrons used in electricity?
Electrons are used to move electricity through a circuit
How does lightning work? What type of electricity does this demonstrate?
Lightning demonstrate static electricity. It works by being a buildup of electricity that is discharged from the clouds.
How is energy measured?Name the different instruments used and when they would be used what are the units for energy?
Electricity is measured using instruments. These include voltmeter, ammeter, and ohmmeter. Voltmeter is used to measure voltage, ammeter is used to measure current, and ohmmeter is used to measure resistance. units of electricity are volts (V ), amps (A), and ohms (Ω).
Describe the difference between current and static electricity
Current electricity is when electricity moves from one place to another static electricity is when electricity gathers in a single location
What are some primary sources of energy?
Primary sources of energy include Hydro, nuclear, coal, natural gas, biomass, wind, and solar geothermal
When you rub a balloon against your hair, it tends to stick to clothing and walls. Why?
When you rub a balloon against your hair. The negative is from your hair go to the balloon and the positives of the balloon go to your hair. Now the balloon gets a negative charge making it attract to things like clothes and walls, which have a positive charge when the balloon touches a wall, the positive a negative attract causing them to stick together.
Opposites _______, Sames ______.
Opposites attract, Sames reppel
Why is it hard to stick two magnets together?
It is hard to stick two magnets together if you are trying to push both negative sides together or both positive sides together. They won’t stick because sames repel and opposites attract.
For the following example state what is the power source, the load and the conductor. A phone plugged into the wall charging overnight.
The power source - The outlet (what’s producing the power)
The conductor - The charging cord (what’s moving the power)
The load - the phone (what’s using the power)
What’s the difference between a series and a parallel circuit?
Series circuit: A circuit that only has one path for electrons to flow (can have more than one load) Parallel circuit: A circuit that has multiple path for electrons to flow (can have more than one load).
List four good conductors, and four good insulators
Good conductors: copper, iron, silver, water
Good insulators: plastic, rubber, ceramics, glass
What happens to the current and brightness of lights as you add more lights in a series circuit?
If you add more lights to a series circuit, the current and brightness will DECREASE. This happens because the lights are on the same pathway meaning the current must flow through each light, causing the current to slow and results in the lights dimming.
What are ohms equations? What do you need to show in order to receive full marks?
Ohms equations are:
V = I x R
I = V/R
R = V/I
To get full marks on a question about Omhs law, you will need to show your givens, formula, and an answer.
What are some forms of renewable and non-renewable energy?
Forms of renewable: wind (turbines), solar (solar panels), hydro (water waterfalls)
Forms of non-renewable: Examples include oil, gas, diesel, and plastics.
What are the pros and cons for renewable and non-renewable energy?
Renewable
Pros: better for environment, can be reused, improve public health (less emissions)
Cons: more costly, wind turbines can harm flying species, construction of water dams can be harmful to animal environment, not reliable
Non-Renewable
Pros: reliable, can produce large amount of energy, cheaper
Cons: can only be used once, harmful to environment, releases greenhouse gases into atmosphere
What are some impacts of us using and producing electricity?
Using/producing electricity can affect our environment (burning, fossil, fuels release, greenhouse gases into our atmosphere, contributing to climate change as well as destruction of habitats), health (air pollution). It can also affect a socially (access to electricity can improve living standards).
