5 Questions
What is the key difference between planets and stars?
Planets move around and don't stay in one place
Which group of planets is called terrestrial planets?
Mercury, Venus, Earth, Mars
What are moons in the context of the solar system?
Objects that orbit around planets
What is the current designation of Pluto in our solar system?
A dwarf planet
What are comets in the context of the solar system known for?
Having a bright tail when close to the Sun
Study Notes
Planets vs Stars
- The key difference between planets and stars is that stars are massive balls of hot, glowing gas that emit their own light, while planets are much smaller and reflect the light of their parent star.
Types of Planets
- Terrestrial planets refer to a group of planets that are composed primarily of rock and metal and have a solid surface, including Mercury, Venus, Earth, and Mars.
Moons
- Moons are natural satellites that orbit around planets in the solar system, and are often formed from debris left over after the planet's formation.
Pluto
- Pluto is currently classified as a dwarf planet, a new category of objects created in 2006 by the International Astronomical Union (IAU).
Comets
- Comets are icy bodies that originate from the outer solar system and are known for their bright tails of gas and dust that form when they approach the Sun.
Test your knowledge about the planets in our solar system with this quiz. Learn about the characteristics and grouping of the planets and other celestial objects that orbit the Sun.
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