Question

Geocentric Model Heliocentric Model
Answers:
The orbits of the planets are circular
Earth is at the center of the solar system
The sun is at the center of the solar system
The orbits of the planets are elliptical
Includes 5 planets
Includes 8 planets

Answer 1

Which is Geocentric and which is Heliocentric

Answer 2

Here’s a comparison of the Geocentric Model and the Heliocentric Model based on the provided answers:

| Feature | Geocentric Model | Heliocentric Model |
|---------------------------------------------|---------------------------------------|--------------------------------------|
| Orbits of the planets | The orbits of the planets are circular| The orbits of the planets are elliptical|
| Central body | Earth is at the center of the solar system | The sun is at the center of the solar system |
| Number of planets included | Includes 5 planets | Includes 8 planets |

The Geocentric Model, which posits that Earth is at the center of the universe with circular orbits for the planets, was more prevalent in ancient astronomy. In contrast, the Heliocentric Model, which places the sun at the center and acknowledges elliptical orbits (as articulated by Kepler), is the foundation of modern astronomy and includes the eight recognized planets of our solar system.

Answer 3

Here’s the correct association for each model based on the features provided:

| Feature | Geocentric Model | Heliocentric Model |
|---------------------------------------------|----------------------------------------|--------------------------------------|
| Orbits of the planets | **The orbits of the planets are circular** | **The orbits of the planets are elliptical** |
| Central body | **Earth is at the center of the solar system** | **The sun is at the center of the solar system** |
| Number of planets included | **Includes 5 planets** | **Includes 8 planets** |

- **Geocentric Model**:
- The orbits of the planets are circular
- Earth is at the center of the solar system
- Includes 5 planets

- **Heliocentric Model**:
- The orbits of the planets are elliptical
- The sun is at the center of the solar system
- Includes 8 planets

If you have any further questions about these models, feel free to ask!