Types of Energy Sources
This is a non-renewable energy source formed from ancient organic matter.
What are Fossil Fuels
This type of electricity is caused by friction and does not flow in a circuit.
What is static electricity
Name a device used to control the flow of electricity in a circuit.
What is a switch
This is the fastest train in the world that utilizes electromagnetic levitation.
What is the maglev train.
This is the formula for efficiency?
What is (useful energy output / total energy input) × 100?
This renewable energy source harnesses power from moving water.
What is hydroelectric energy?
This is the unit for electric current.
What is an ampere/amps?
This device allows you to change the resistance in a circuit to control things like the brightness of a light bulb or the speed of a fan.
What is a rheostat or variable resistor?
When you wrap a copper wire around a nail and connect both ends to a battery, this happens to the nail.
What is it becomes an electromagnet and can pick up small metal objects like paperclips?
An appliance uses 1000J of energy but only outputs 600J. What is its efficiency?
What is 60%?
name one advantage of using solar energy.
What is renewable and reduces greenhouse gas emissions?
What are - Like charges repel / Opposites attract
This type of circuit has only one path for current to flow.
What is a series circuit?
This type of magnet is created using electricity.
What is an electromagnet?
Why is no machine 100% efficient?
What is because of energy lost as heat or sound?
his type of energy comes from heat within the Earth.
What is geothermal energy?
This circuit has 2 amps of current and 10 ohms of resistance. What is the voltage?
What is 20 volts?
What happens to the total resistance in a parallel circuit when more resistors are added?
What is it decreases
What happens to the strength of an electromagnet when you increase the current?
What is it increases?
Name a way to increase the efficiency of an electric motor.
What is reducing friction?
List two major drawbacks of nuclear energy.
What are radioactive waste and risk of accidents?
Calculate the current if voltage is 120V and resistance is 24Ω.
What is 5 amps?
In a series circuit with 3 bulbs, what happens if one bulb goes out?
What is all the bulbs go out?
What device converts electrical energy into mechanical energy?
What is an electric motor?
A light bulb has 75% efficiency. If it uses 80J, how much energy is useful?
What is 60J?