Central Idea Try It Part 2 Multiple Alternative Activity

Select an answer(s) from the options below and click Submit.

Which of the following statements represent key details from article facts, quotations, definitions and text features? Select ALL that apply.

A. The new Nobel award winners worked for years to achieve blue LEDs.

B. The section is subtitled “They Never Gave Up.”

C. Red and green LEDs have been around since the 1960s.

D. Creating blue LEDs took about another 30 years.

E. The photo caption, “Scientist Shuji Nakamura…demonstrates LED lights during a news conference.”

F. But these guys persisted and they tried and tried again and eventually they actually succeeded.

G. The team grew the crystals from gallium nitride, a semiconductor that produces blue light.

H. Semiconductors allow electricity to flow between a conductor, such as copper, and an insulator, like glass.

Answer: Correct!

Answer: Incorrect. The answers are A, B, D, E and F.

Answer: One or more of your answers are incorrect. Try again.