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Heir

If your grandfather leaves his candy factory to you in his will, it means you're the heir to the family candy business, and after your grandfather dies, you will inherit the factory.

Glower

If you see someone glower at you, you might consider glowering back, but no one likes an angry staring contest. To glower is not only to stare, it's to stare angrily, as if you're going to throttle someone.

Vocabulary

Optimist

An optimist is someone who always sees the bright side of any situation — a trait that can be either encouraging or annoying, depending on your frame of mind.

Pessimit

If the world can be divided into those who see the glass half empty and those who see the glass half full, the half-empty crew are known as pessimists––they always see the worst.

Oscillate

On a hot day, you’ll be happy to have a fan that can oscillate, meaning it moves back and forth in a steady motion.

Cog

An engine needs each of its part to work. It has gears which have wheels. Each wheel has cogs, or tiny teeth that fit together, making the wheel turn, the engine run. Every cog is essential to that engine.

Chime

a percussion instrument consisting of a set of tuned bells that are struck with a hammer; used as an orchestral instrument

Dynasty 

A dynasty is a series of leaders in the same family, like the British Royal Family, or a local business dynasty, in which four generations have made their fortune at the family store.

Heir 

Heir

A sound of thunder

A Sound of Thunder is a Science Fiction and Suspense story.
"A real time Machine, makes you think"
A time machine is a technology of the future or a partially true scientific theory.
"He indicated a metal Path that struck off into green wilderness." The metal path is futuristic because it floats.
"We were fools to come. This is impossible." Eckels says this when the dinosaur is first seen. It creates suspense by making the reader feel what he feels.
" Does this Safari guarantee that I come back alive?"This quote at the beginning of the story creates suspense about what will happen.
" His face was numb, his mouth trembled." This is a reaction to the realization that the world has changed. We are in suspense because we can 'feel' his fear and we don't know how much has changed.
These quotes prove that the story is suspense and science fiction.