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Understanding Earth: Essential Questions About Our Planet's Systems

This educational resource explores essential questions about Earth, including the importance of the Sun, the role of plants, and the various systems that sustain life. Learn why the Sun is crucial for photosynthesis and warmth, why we need plants for food and oxygen, and how Earth's atmosphere and hydrosphere function. Additionally, discover the causes of seasons, the cycle of oxygen and carbon dioxide, and the four layers of Earth. Engage with these fundamental concepts to gain a deeper understanding of our planet!

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Understanding Earth: Essential Questions About Our Planet's Systems

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  1. All About Earth Eric Angat Teacher

  2. Essential Question How do I describe our planet?

  3. 1. Give two reasons why the Sun is so important. heat • The Sun powers photosynthesis. • The Sun makes our planet warm.

  4. 2. Give two reasons why we need plants. • We need plants to have food oxygen. • We need plants to prevent • global warming. O2 food Lessens greenhouse gases or CO2.

  5. 3. What is the most abundant gas in the atmosphere? Abundant=plentiful Atmosphere – air that envelopes Earth.

  6. 4. How much of Earth is covered with water? Hydrosphere describes the combined mass of water found on, under, and over the surface of a planet.

  7. 5. How many percent of Earth’s water is readily usable to us? Not readily usable because of its salt content Not readily usable because it is solid.

  8. 6. What causes the seasons on Earth? Northern hemisphere is tilted away from Sun. winter summer Southern hemisphere is tilted towards the Sun. Earth’s tilt and its revolution around the Sun produce seasons.

  9. Seasons and distance from the Sun Winter-USA Summer-USA Far Winter-Australia Near Summer -Australia http://dolio.lh.net/~apw/astro/sun.html

  10. Copy and answer the following questions. 7. What is the atmosphere? 8. What is the hydrosphere? 9. How does the cycle of oxygen and carbon dioxide happen? 10. What are the four layers of Earth? 11. What is rotation? 12. What is revolution?

  11. https://www.youtube.com/watch?v=C34BW3fwtE4

  12. Copy and answer the following questions. 7. What is the atmosphere? 8. What is the hydrosphere? 9. How does the constant cycle of oxygen and carbon dioxide happen? is the air that surrounds Earth. is the sum of all the water on Earth. Plants use carbon dioxide and create oxygen and we use oxygen and create carbon dioxide.

  13. Copy and answer the following questions. 10. What are the four layers of Earth? 11. What is rotation? 12. What is revolution? Crust, mantle, outer core, and inner core. Spinning of a planet or a moon on its axis. This causes day and night. Earth and other planets moving around the Sun. Earth’s tilt as it revolves around the Sun causes seasons.

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