USVI NGSS Science Grade 5 Practice Questions - U.S. Virgin Islands NGSS Science Summative Assessment, Grade 5 Exam

Access More Questions

Electrical wires in homes are made of copper metal wrapped in a plastic coating. Why is plastic used on the outside of the wires?

Plastic is an electrical conductor that helps electricity flow faster. Plastic is an electrical insulator that stops electricity from escaping and prevents shocks. Plastic increases the weight of the wire so it stays grounded. Plastic dissolves in water to keep the inner copper clean.

Correct Answer:

Plastic is an electrical insulator that stops electricity from escaping and prevents shocks.

Access more questions from this quiz

Continue to USVI NGSS Science Grade 5 Practice Questions - U.S. Virgin Islands NGSS Science Summative Assessment, Grade 5 Exam for more practice questions and the full quiz experience.

Access More Questions