The Stone Age Man | Life Millions Of Years Ago | Ancient Man Grade 6
Introduction:
Earth is our home, providing food and shelter for humans, animals, and plants. Variations in living beings are due to environmental changes. Understanding Earth's formation and life's origins is important. Environment for Man's Origin: Earth formed around 4.54 billion years ago from a nebula. Initially very hot, now the core remains extremely hot. Lava from volcanic eruptions reveals inner Earth's temperature. Species Origin: Prokaryote Bacteria first life form, appearing 2.5 billion years ago. Fossilized creature discovered in Canada, lived 542 million years ago, with a mouth and five eyes. The Silurian era saw creatures similar to millipedes on land, 420 million years ago. Paleozoic era, 542 million years ago, saw the spread of plants on land before animals. Important Points: Earth formed 4.54 billion years ago from a nebula. Earth initially hot, gradually cooling but remains warm inside. Life originated later, first in water, with tiny bacteria. Plants preceded animals in appearance on Earth. Activity 04: Collect pictures of plants, animals, and humans from different eras as instructed by the teacher. Man is a unique animal, capable of inventing technology, language, and engaging in art forms like dancing and singing. Man originated from a generation of apes, evolving over time to adapt to changes in the environment, particularly during the Great Ice Age. The Great Ice Age influenced human evolution due to extreme cold and scarcity of food, leading to changes in behavior and physical attributes. Australopithecus was among the first apes to exhibit human-like traits and walked on two feet. Homo Habilis, living around 2.3 - 1.4 million years ago, was capable of making more advanced stone tools. The use of fire by Homo Erectus around 790,000 years ago contributed to human progress, making life more comfortable and aiding in food digestion. Homo Neanderthalensis, living around 600,000 years ago, built houses and demonstrated advanced hunting skills. Over a period of about 2 million years, humans developed language and artistic expressions such as dancing, music, and painting. Homo Sapien, the closest relative of modern humans, discovered sophisticated tools and practices. The cultural evolution of man, including the discovery of fire and the development of tools, continues to impact human society today.
Introduction:
- Earth is our home, providing us and other living beings with food and necessities.
- The environment changes over time, affecting all life on Earth.
- Understanding Earth's history helps us appreciate our planet better.
2.1 The Environment Where Man's Origin Took Place:
- Earth's origin dates back around 4.54 billion years, formed from a nebula.
- Despite cooling, Earth's core remains intensely hot.
- Volcanic eruptions release lava from Earth's core.
- Life originated much later, about 2.5 billion years ago, with Prokaryote Bacteria.
- Fossils of early creatures, like Opabinia, date back around 542 million years.
- The Silurian era saw creatures similar to millipedes emerging on land, about 420 million years ago.
- Plants colonized land before animals, during the Paleozoic era, 542 million years ago.
Important Points:
- Earth formed about 4.54 billion years ago from a nebula.
- Despite cooling, Earth's core remains intensely hot.
- Life originated about 2.5 billion years ago in water.
- The first life forms were tiny bacteria.
- Plants appeared before animals on Earth.
Activity 04:
- Collect pictures of plants, animals, and humans from different eras with the guidance of the teacher.
What is the earth?
- The earth is a planet where humans and other living beings reside.
How old is the earth believed to be?
- The earth is believed to be around 4.54 billion years old.
How was the earth formed according to scientists?
- Scientists believe that the earth was formed from a cloud of dust in the sky known as a nebula.
What is the temperature at the central part of the earth estimated to be?
- The temperature at the central part of the earth is estimated to be about 6,000 degrees Celsius.
What happens when volcanoes erupt?
- When volcanoes erupt, elements from the central part of the earth pour out, known as lava.
What is the first form of life believed to have appeared on earth?
- The first form of life believed to have appeared on earth is Prokaryote Bacteria.
When did Prokaryote Bacteria first appear on earth?
- Prokaryote Bacteria first appeared on earth around 2.5 billion years ago.
Where was the fossilized mark of a creature found, which lived 542 million years ago?
- The fossilized mark of a creature that lived 542 million years ago was found in Canada.
Describe the creature that lived 542 million years ago.
- The creature was between 4 cm and 7 cm in length, lived in the sea bed, had a mouth to eat, and five eyes. It is known as Opabinia.
When did creatures similar to millipedes first appear on land?
- Creatures similar to millipedes first appeared on land around 420 million years ago during the Silurian era.
When did plants first spread on land?
- Plants first spread on land around 542 million years ago during the Paleozoic era.
Did plants or animals appear on land first?
- Plants appeared on land before animals.
How many eyes did Opabinia have?
- Opabinia had five eyes.
What activity can you do based on the instructions of your teacher?
- Make a collection of pictures of plants, animals, and humans belonging to different eras.
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