Final answer:
Meteoroids are space particles, which become meteors when they enter Earth's atmosphere, and meteorites if they land on Earth. Meteor showers occur when Earth passes through debris trails left by comets. The probable origin of meteoroids, meteors, and meteorites is the early solar system.
Step-by-step explanation:
Meteoroids, meteors, and meteorites are related but differ in where they are in their interaction with Earth. A meteoroid is a small particle from a comet or asteroid orbiting in space. When a meteoroid enters the Earth's atmosphere and burns up, it creates a streak of light called a meteor, commonly referred to as a shooting star. If parts of this meteoroid survive the journey through the atmosphere and land on Earth, these remaining pieces are termed meteorites. The probable origin of these objects is from the early solar system, represented by various primitive bodies such as comets and asteroids.
Comets are related to meteor showers because as they orbit close to the sun, they leave trails of dust and ice. These cometary debris trails are what we pass through during meteor showers, leading to increased meteor activity as the Earth intersects these dust streams.