5 Questions
What are the two largest planets primarily composed of?
Hydrogen and helium
Which planet has the most mass after the Sun?
Jupiter
What is the composition of Uranus and Neptune mainly made up of?
Water, ammonia, and methane
Which type of planets are Mercury, Venus, Earth, and Mars?
Terrestrial planets
What is the ecliptic?
A nearly flat disc where all eight planets have almost circular orbits
Study Notes
Composition of Planets
- The two largest planets, Jupiter and Saturn, are primarily composed of hydrogen and helium gases.
- Jupiter has the most mass after the Sun, making it the largest planet in our solar system.
Ice Giants
- Uranus and Neptune are mainly composed of water, ammonia, and methane ices, with a small rocky core at their center.
Inner Planets
- Mercury, Venus, Earth, and Mars are classified as terrestrial planets, meaning they are small, rocky, and have a solid surface.
Celestial Mechanics
- The ecliptic is the imaginary plane of the Earth's orbit around the Sun, which is used as a reference point for measuring the orbits of other planets and celestial objects.
Test your knowledge about the formation and components of the solar system, including planets, dwarf planets, and natural satellites. Learn about the gravitational dynamics within this system that formed 4.6 billion years ago.
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