Instructions
Hello, explorer! Today, we're digging into the past to learn about how things like ancient trees can turn into beautiful stones. Read each section carefully and complete the activities.
Part 1: What Do These Words Mean?
First, let's learn our key terms. The word "Petrie" is very close to a scientific word, "Petrified," which means "turned into stone."
- Fossilized: The process where the remains of an ancient plant or animal are preserved in rock. This can include bones, shells, or even footprints!
- Petrified: A special type of fossilization where the original material of a plant (like wood) is slowly replaced by minerals, creating a perfect stone copy.
- Agatized: A very special and beautiful type of petrification. This happens when the minerals that replace the wood are a type of colorful, often striped, quartz called agate.
Activity: Match the word to its correct definition. Write the letter of the correct definition on the line next to the word.
- Petrified _____
- Agatized _____
- Fossilized _____
Definitions:
A. Preserved remains of any ancient living thing.
B. Turned into stone by beautiful, colorful agate minerals.
C. Turned into stone when minerals replaced the original material.
Part 2: The Journey of an Ancient Tree
Activity: Read the story of a tree from millions of years ago. Use the words from the word bank below to fill in the blanks and complete the story.
Word Bank: agatized, minerals, petrified, fossilized
Millions of years ago, a tall tree fell into a river. Instead of rotting, it was quickly buried by mud and sand. Over a very long time, water full of ________________ seeped into the wood. The tiny particles of rock and crystal slowly replaced all the wood fibers, turning the tree into a perfect stone copy. The tree was now ________________! This entire preservation process is known as being ________________. In some very special places, the minerals that filled the tree created beautiful rainbow colors and stripes. This incredibly rare and colorful stone wood is called ________________ wood.
Part 3: Word Search Adventure
Activity: Find and circle the hidden words in the puzzle below. Words can be found forwards, backwards, up, down, and diagonally.
A G A T I Z E D W R O C K
N Z T S F M K N S T O N E
C J S I L O T U O E N L A
I E P N D L L R R P O L R
E G K E E R I I L L I A E
N A S R T R A M F Z T C N
T R E E D I F I R T E P I
F O S S I L I Z E D B M M
L E S C A R O C K S G A H
W O O D T A E N C H A N T
Words to Find:
- AGATIZED
- FOSSILIZED
- PETRIFIED
- MINERAL
- STONE
- ANCIENT
- WOOD
- ROCK
- TREE
Part 4: Imagine That!
Activity: You are hiking and you discover a piece of agatized wood. It shimmers with stripes of red, blue, and yellow. On the lines below, write a short paragraph describing what it looks like, how it feels in your hands (is it heavy, smooth, rough?), and what you think the ancient forest it came from might have looked like.
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
Answer Key
Part 1: What Do These Words Mean?
- Petrified C
- Agatized B
- Fossilized A
Part 2: The Journey of an Ancient Tree
Millions of years ago, a tall tree fell into a river. Instead of rotting, it was quickly buried by mud and sand. Over a very long time, water full of minerals seeped into the wood. The tiny particles of rock and crystal slowly replaced all the wood fibers, turning the tree into a perfect stone copy. The tree was now petrified! This entire preservation process is known as being fossilized. In some very special places, the minerals that filled the tree created beautiful rainbow colors and stripes. This incredibly rare and colorful stone wood is called agatized wood.
Part 3: Word Search Adventure
A G A T I Z E D W R O C K
N Z T S F M K N S T O N E
C J S I L O T U O E N L R
I E P N D L L R R P O L E
E G K E E R I I L L I A E
N A S R T R A M F Z T C N
T R E E D I F I R T E P I
F O S S I L I Z E D B M M
. . . . . . . . C K S . .
W O O D . . . . . . . . .
- AGATIZED: Row 1, left to right
- FOSSILIZED: Row 8, left to right
- PETRIFIED: Row 7, right to left
- MINERAL: Column 10, top to bottom (MINERAL)
- STONE: Row 2, right to left
- ANCIENT: Column 1, top to bottom
- WOOD: Row 10, left to right
- ROCK: Row 1, right to left (KCOR)
- TREE: Row 7, left to right (TREE)
Part 4: Imagine That!
Answers will vary. The student should describe the look and feel of the agatized wood and use their imagination to picture its ancient environment.