Electricity Full Unit Practice

What are the part(s) of the atom that "flow", which generates an electrical current?

• Electrons

• Protons

• Neutrons

• Nucleus

Answer explanation

ELECTRons = ELECTRicity

What is one of the MOST common ways to produce electricity?

• Photosynthesis

• Spinning Turbines (magnets and metal)

• Waterfalls

• Sun

Answer explanation

The majority of electricity is generated using turbines, which is copper/metal and a magnet. When the magnet spins or moves, it pushes and pulls electrons in the copper, which causes electricity.

Fossil fuels are used most often right now to create this spinning motion. However, there are cleaner ways like using water and wind.

What are some ways to produce electricity that are safer for the environment? (SELECT ALL THAT APPLY)

• Solar power

• Wind power

• Coal

• Hydro power

Answer explanation

Though the use of fossil fuels, like coal, are the most common way to produce electricity, there are cleaner ways! Wind, water(hydro), and solar(sun) are all better for the environment than burning fossil fuels.

The longer leg of an LED is ______.

• Positive

• Negative

• Neither positive or negative

• Changes depending on the battery

Answer explanation

The longer leg is always positive!

The shorter leg of an LED is ______.

• Positive

• Negative

• Neither positive or negative

• Changes depending on the battery

Answer explanation

The shorter leg is always negative!

LED's have a few benefits over traditional lights. What are the benefits? (SELECT ALL THAT APPLY)

• Brighter

• Lasts Longer

• Saves energy

• Not as hot

Answer explanation

All of these are benefits!! LED's are brighter, last longer, are not as hot, and save on electricity (don't use as much power).

Materials that allow electricity to easily flow through are called _______.

• Conductors

• Insulators

• Consumers

• Transformers

Answer explanation

Materials that DO NOT allow electricity to easily flow through are called _______.

• Conductors

• Insulators

• Consumers

• Transformers

Answer explanation

Metals

• Conductor

• Insulator

Answer explanation

All metals allow electricity to flow through. This includes copper, iron, steel, aluminum, etc.

Copper

• Conductor

• Insulator

Answer explanation

Copper is a metal, so it is a conductor (electricity can flow through it). Think of the copper tape we used to make our paper circuits!