Question

Reference to context: I. Early man didn’t know what fire was, but he must have seen the damage it could cause. He must have watched lightning and volcanoes long before he began to use fire himself. Fire was powerful and dangerous, and he was frightened. Fire may have puzzled early man but we now know that fire is the result of a chemical reaction. When the oxygen in the air combines with carbon and hydrogen in a fuel, a chemical reaction takes Reference to context:

I. Early man didn’t know what fire was, but he must have seen the damage it

could cause. He must have watched lightning and volcanoes long before he

began to use fire himself. Fire was powerful and dangerous, and he was

frightened.

Fire may have puzzled early man but we now know that fire is the result of a

chemical reaction. When the oxygen in the air combines with carbon and

hydrogen in a fuel, a chemical reaction takes place. Energy in the form of heat

and light is released in this process. This is what we call fire.

Questions:

a. How did early man notice the damage caused by fire?

b. What three things are needed to make fire?

c. Which two elements are present in fuel?

d. What happens when oxygen combines with carbon and hydrogen in a fuel?

e. Find the word from the above passage that means the same as to 'afraid’. in fuel? d. What happens when oxygen combines with carbon and hydrogen in a fuel? e. Find the word from the above passage that means the same as to 'afraid’.​

Answer 1

Answer:

A. He watched lightning and volcanoes and was frightened by the amount of damage they do, this led to him being able to analyze the damage of the fire

B. Carbon Oxygen and Hydrogen

C. Carbon and Hydrogen

D. A chemical reaction occurs and energy in the form of light and heat is released. That's what we call fire.

E. Frightened

Answer 2

Answer:

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