Lesson 50: Material Science & Metal — Iron
PLL Part Two
Classical Inquiry • Iron
“Tell something that is made of iron. How does the iron feel? When you try to lift it, what would you say it is? Where do we get iron? Of what use is it?”
Material Science Focus: Physical properties (hard, cold, heavy) • Iron mining & metallurgy • The blacksmith forge • Industrial utility.
Observe the physical qualities of iron. Answer each question on the handwriting lines.
1. Touch: How does a piece of unheated iron feel to your fingers?
2. Weight: When you try to lift a block of iron, what would you say it is?
3. Origin: Where do we get iron? Dug from deep within the
4. Iron Objects: Name two common things made of iron:
Discover how humans shape such a hard metal into useful tools.
A. The Magic of Heat: What happens to hard iron when heated in a blacksmith's glowing coals?
It becomes red-hot and so it can be hammered into shape.
B. The Blacksmith's Anvil: Why must an anvil be made of heavy iron?
To withstand the heavy blows of the without breaking.
In two complete sentences, explain why iron is one of the most useful metals on earth. Mention buildings, trains, or tools.
Sentence 1:
Sentence 2:
Why would a wooden hammer or paper nail not work? Explain the special strength of iron.
Iron Strength: