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Class 7 Science Chapter 12 Mindmap - Earth, Moon, and the Sun

Class 7 Science Chapter 12 Mindmap - Earth, Moon, and the Sun

The document Class 7 Science Chapter 12 Mindmap - Earth, Moon, and the Sun is a part of the Class 7 Course Science Olympiad Class 7.
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FAQs on Class 7 Science Chapter 12 Mindmap - Earth, Moon, and the Sun

1. What are the main differences between the Earth, Moon, and Sun?
Ans. The Earth is a terrestrial planet that supports life, has a diverse atmosphere, and is composed of various elements and compounds. The Moon is Earth's only natural satellite, smaller in size, with a barren surface covered in craters and no atmosphere. The Sun is a massive star at the center of our solar system, primarily made of hydrogen and helium, providing light and heat essential for life on Earth.
2. How does the Sun affect the Earth and Moon?
Ans. The Sun's gravitational pull keeps the Earth and Moon in orbit. It provides the necessary energy for photosynthesis, influencing weather patterns and climate on Earth. The Moon's phases are also affected by its position relative to the Sun, which affects tides on Earth due to the Sun's gravitational influence.
3. What causes the phases of the Moon?
Ans. The phases of the Moon are caused by the changing positions of the Moon, Earth, and Sun. As the Moon orbits the Earth, different portions of its surface are illuminated by the Sun, leading to the appearance of various phases such as new moon, crescent, first quarter, gibbous, and full moon.
4. Why do we only see one side of the Moon from Earth?
Ans. We only see one side of the Moon from Earth due to a phenomenon called synchronous rotation. The Moon takes the same amount of time to rotate on its axis as it does to orbit the Earth, which means that the same side of the Moon always faces us.
5. What role does the Earth-Moon system play in space exploration?
Ans. The Earth-Moon system serves as a stepping stone for space exploration. The Moon is used for testing technologies and conducting research due to its proximity. It provides insights into the history of the Earth and the solar system, and future missions may use the Moon as a base for exploring Mars and beyond.
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