U.S. Soldiers take cover in a trench as a test atomic bomb explodes in Survival City in Nevada in 1947.

The video tutorial introduces the concept of an atomic blast, highlighting its visual and auditory effects. It showcases the immense destructive power of nuclear energy through spectacular motion pictures, emphasizing the impact on the environment.

In what ways does the text convey the impact of an atomic blast on the environment?

What is the significance of the phrase 'motion pictures with cord first hand' in the context of the text?