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What is the Earth? | Year 5 Science PDF Download
Earth: A Fascinating Planet
- The Age of Earth: Our planet, Earth, boasts a rich history spanning an impressive 4.5 billion years, making it a venerable member of our solar system.
- Proximity to the Sun: Among the planets in our solar neighborhood, Earth holds a special place as one of the closest to the Sun, influencing its climatic patterns and conditions.
- Orbital Speed and Rotation: Completing a full revolution around the Sun in one year, Earth also spins on its axis at a remarkable speed of about 1000 miles per hour. This rotation allows for the distinction between day and night, with one full rotation occurring every 24 hours.
Exploring Earth's Rotation
- Earth's rotation on its axis is crucial for the occurrence of day and night cycles. Imagine standing at a point on Earth's surface - as the planet rotates, you experience different parts of the day, transitioning from dawn to dusk and back again.
- Earth's age, its proximity to the Sun, its orbital journey, and its rotation are all fascinating aspects that contribute to the planet's uniqueness and the diverse life forms it supports.
- When the Earth spins on its axis, different parts of it receive sunlight at different times, causing day and night to occur.
Question for What is the Earth?Try yourself: What is the purpose of Earth's rotation on its axis?View Solution
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FAQs on What is the Earth? - Year 5 Science
| 1. What is the Earth made of? |  |
Ans. The Earth is primarily composed of iron, oxygen, silicon, magnesium, sulfur, nickel, calcium, and aluminum.
| 2. How old is the Earth? | |
Ans. Scientists estimate that the Earth is approximately 4.5 billion years old.
| 3. What is the Earth's atmosphere made of? | |
Ans. The Earth's atmosphere is composed mainly of nitrogen (78%) and oxygen (21%), with small amounts of other gases such as carbon dioxide and argon.
| 4. Why is the Earth called the "Blue Planet"? | |
Ans. The Earth is called the "Blue Planet" because when viewed from space, its oceans and atmosphere give it a predominantly blue color.
| 5. How is the Earth's magnetic field generated? | |
Ans. The Earth's magnetic field is believed to be generated by the motion of molten iron in its outer core. This creates a dynamo effect that produces the magnetic field surrounding the planet.
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Nov 22, 2024 Last updated |
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