Earth And Life Science Lesson 1 PDF

Earth and Life Science Recognize The Uniqueness Of Earth, Being The Only Planet In The Solar System With Properties Necessary To Support Life. Objectives After going through this lesson, you are expected to: 1. Identify the characteristics of the Earth that supports life; an...

Earth and Life Science Recognize The Uniqueness Of Earth, Being The Only Planet In The Solar System With Properties Necessary To Support Life. Objectives After going through this lesson, you are expected to: 1. Identify the characteristics of the Earth that supports life; and 2. Expound how the characteristics of the Earth sustain the needs of a living organism. IDENTIFY THE GIVEN ILLUSTRATION. 4 LESSON 1: Origin and Structure of the Earth- Planet Earth  Earth is the only planet in the solar system known to harbour life. Our planet has a molten nickel-iron core which gave rise to an extensive magnetic field, which, along with the atmosphere, shields us from harmful radiation coming from the Sun. This Photo by Unknown Author is licensed under CC BY 7 8 9 Earth is the only place in the known universe confirmed to host life. These are reasons why planet earth is a unique one (1) It has liquid water; (2) Plate Tectonics; and (3) It has atmosphere that shelters it from the worst of the sun’s rays. 10 Earth is the only planet in the solar system that has a large amount of liquid water. About 70% of the surface of the Earth is covered by liquid or frozen water. Because of this, Earth is sometimes called “blue planet.” Planet Earth is habitable because it has the right distance from the sun. It is kept warm by an insulating atmosphere, and it has the right chemical ingredients for life including water and carbon. It can provide water, oxygen, useful biological products for human, and has suitable weather and climate. 11 Earth, Venus, and Mars may have similarities: (1)They all are terrestrial planets, made of solid rocks and silicates; (2) They all have an atmosphere; (3) They all almost have the same time to rotate on their axes; (4) Earth and Mars both have water; (5) They all have carbon dioxide; (6 All have landforms. 12 Earth, Venus, and Mars have differences: (1)Venus has no water; (2) Venus and Mars don’t have oxygen; and (3) Earth has life forms. 13 14 Venus has very thick atmosphere which is almost dense as Earth, while Mars has thin atmosphere. Venus is hotter than Earth. Mars is colder than Earth.  summary 20XX presentation title 16 thank you