#rsisb
Roll no. 253
Story Post no. 08
Foundation level
## The Journey of Dinosaurs: A Scientific Perspective
Dinosaurs were extraordinary creatures that lived on Earth for more than 160 million years, dominating a wide variety of environments during the Triassic, Jurassic, and Cretaceous periods. Through the study of fossils, footprints, eggs, and bones, scientists have uncovered valuable information about how dinosaurs lived, evolved, and eventually became extinct around 66 million years ago. Modern technology and scientific research continue to reveal fascinating discoveries, helping us understand the connection between ancient dinosaurs and today's birds. Exploring the journey of dinosaurs inspires curiosity, encourages scientific thinking, and reminds us of the ever-changing history of life on our planet.
** Key Lesson:** *Fossils and scientific research help us uncover the history of dinosaurs and deepen our understanding of Earth's incredible past.*
** Tags:**
#Dinosaurs #Paleontology #Science #Fossils #EarthHistory #Jurassic #Cretaceous #Triassic #STEM #Education #Learning #ScientificDiscovery #NaturalHistory #Biology #RehanSchool
Asma Shaheen EducationWali
Saima Happinesswali
Irum Asim

#rsisb
Roll no. 214
Foundation level
Story post no. 9
The Journey of Dinosaurs: A Scientific Perspective**
Step back in time and explore the incredible world of dinosaurs! From their rise over 230 million years ago to their dominance of Earth and their eventual extinction, dinosaurs remain one of science's greatest mysteries. Fossils, footprints, and modern research continue to reveal fascinating insights into their lives, evolution, and the ancient environments they called home. Join us as we uncover the scientific story of these extraordinary creatures and discover how they shaped the history of our planet.
Science helps us understand the past, inspires curiosity, and reminds us that our planet has an amazing history waiting to be explored!
**#Dinosaurs #Science #Paleontology #Fossils #EarthHistory #Jurassic #Cretaceous #PrehistoricLife #Evolution #STEM #ScienceEducation #Nature #History #Learning #Discovery #AncientWorld #Geology #EducationalContent #ExploreScience #Knowledge

Human history

1. Sahelanthropus tchadensis

• Time Period: 7–6 million years ago.
• Significance: Earliest known hominin, found in Chad, potentially walked upright.

2. Ardipithecus ramidus

• Time Period: 4.4 million years ago.
• Significance: Fossils found in Ethiopia, early bipedalism.

3. Australopithecus afarensis (e.g., Lucy)

• Time Period: 3.9–2.9 million years ago.
• Significance: Early human ancestor, evidence of bipedalism.

4. Homo habilis

• Time Period: 2.1–1.5 million years ago.
• Significance: Early tool users in Africa.

5. Homo erectus

• Time Period: 1.9 million to 110,000 years ago.
• Significance: First hominins to leave Africa, early tool and fire use.

6. Homo sapiens (Early Migration)

• Time Period: 200,000–60,000 years ago.
• Significance: Homo sapiens began migrating out of Africa into Eurasia.

7. Neanderthals (Homo neanderthalensis)

• Time Period: 400,000–40,000 years ago.
• Significance: Coexisted and interbred with early Homo sapiens.

8. Adam (Religious figure)

• Time Period: Estimated around 6,000–10,000 years ago (based on religious texts).

9. Noah (Nuh)

• Time Period: Estimated around 4,000–6,000 years ago.

10. Abraham (Ibrahim)

• Time Period: Estimated around 4,000 years ago.

11. Moses (Musa)

• Time Period: Estimated around 3,200 years ago.

12. David (Dawud)

• Time Period: Estimated around 3,000 years ago.

13. Jesus (Isa)

• Time Period: Estimated around 2,000 years ago (approximately 4 BCE to 30 CE).

14. Prophet Muhammad (PBUH)

• Born: 1,454 years ago (570 CE).
• Death: 1,392 years ago (632 CE).

Carbon dating is a method used to figure out how old things are by looking at a special kind of carbon called carbon-14 that exists in all living things.

Here’s how it works:

1. Carbon-14 is in everything alive. Plants get carbon-14 from the air, and animals (including humans) get it from eating plants or other animals. So, while something is alive, it has carbon-14 in it.
2. When something dies, it stops getting carbon-14. After death, the carbon-14 in it slowly starts to disappear (it decays), but regular carbon (carbon-12) stays the same.
3. Carbon-14 decays at a known speed. Over time, carbon-14 breaks down at a steady rate. After about 5,730 years, half of the carbon-14 is gone. After another 5,730 years, half of what’s left disappears, and so on.
4. Scientists measure the amount of carbon-14 left. By measuring how much carbon-14 is still in a dead plant, animal, or human, scientists can figure out how long ago it died. If only half the carbon-14 is left, for example, the object is about 5,730 years old.
5. It’s like a clock. The less carbon-14 there is, the older the object. This method works for things that are up to about 50,000 years old.

So, carbon dating is a way of using the natural decay of carbon-14 to estimate the age of things that were once alive, like fossils or ancient artifacts.

ACCL Day 48
"The Journey of Dinosaurs: A Scientific Perspective"

Millions of years ago, long before humans walked the Earth, dinosaurs ruled the land, sky, and seas. From the gigantic Brachiosaurus grazing on treetops to the fierce Tyrannosaurus Rex hunting its prey, these magnificent creatures shaped the prehistoric world.

Through fossils and scientific research, weve uncovered their mysterious journey — how they lived, evolved, and eventually disappeared due to dramatic changes in Earths environment.

Their story reminds us how powerful and fragile life can be, leaving behind a legacy written in stone.

Imran Khan Street Wala