Electrical Energy

What type of charge do neutrons have?

• Positive

• Negative

• Neutral

• Electric

What is the charge of protons?

• Negative

• Neutral

• Electric

• Positive

What happens if an atom gains electrons?

• It becomes positively charged

• It remains neutral

• It becomes negatively charged

• It loses its nucleus

Which of these are electrical conductors?

• Wood and plastic

• Copper and silver

• Paper and rubber

• Plastic and aluminum

What do electrical insulators do?

• Allow electricity to flow through them

• Block the flow of electricity

• Generate electricity

• Transform electricity into heat

Why are copper wires covered with plastic?

• To make them safer

• To make them more flexible

• To help conduct more electricity

• To store energy

What is the first step in how electricity reaches our homes?

• Electricity reaches our homes

• High voltage lines transport electricity

• Electricity is generated at power plants

• Transformers increase the voltage

What happens at substations before electricity reaches our homes?

• The voltage is reduced to a safe level

• The voltage is increased to travel long distances

• Electricity is stored for later use

• Electricity is converted into heat

Which of the following is an advantage of robots?

• They can decompose

• They can do dangerous jobs

• They are expensive

• They can cause job loss

What is a disadvantage of using robots?

• They can work 24/7

• They can perform surgery

• They can be expensive

• They can perform repetitive tasks