5 Questions
What are stars?
Celestial bodies that emit light and heat
What is the solar system?
A system formed by the sun, planets, asteroids, dwarf planets, and natural satellites
How is the solar system believed to have been formed?
By combining dust particles and gases together
What are asteroids?
Shapeless pieces of planets
What can scientists explore with modern equipment?
More than what is visible to the naked eye
Study Notes
Understanding Stars and the Solar System
- Stars are massive, luminous balls of gas that are held together by their own gravity.
- The solar system is a collection of celestial objects that orbit around the Sun, including eight planets, dwarf planets, asteroids, comets, and other objects.
Formation of the Solar System
- The solar system is believed to have been formed around 4.6 billion years ago from a giant cloud of gas and dust called the solar nebula.
- Gravity caused the nebula to collapse, with the Sun forming at the center and the planets forming from the remaining material.
Asteroids
- Asteroids are small, rocky objects that orbit the Sun, often found in the asteroid belt between the orbits of Mars and Jupiter.
- Asteroids are remnants from the early formation of the solar system and can provide clues about the solar system's history.
Exploring with Modern Equipment
- With modern telescopes, spacecraft, and other equipment, scientists can explore the solar system, study the properties of stars, and investigate asteroids.
- Modern equipment allows scientists to gather data, conduct experiments, and analyze samples from space, greatly advancing our understanding of the universe.
Test your knowledge of Sri Lanka's geography with this Grade 8 quiz. Explore the island's physical and human geography, including its natural features, climate, and cultural landmarks. Perfect for students and anyone interested in learning about Sri Lanka's diverse geography.
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