Question

1. what feature makes our solar system a heliocentric solar system?

all the planets revolve around earth.
all the planets have a retrograde rotation on their axis.
all the planets in revolve around their own moon.
all the planets revolve around the sun.

Explanation:

To determine the correct answer, we analyze the definition of a heliocentric solar system. A heliocentric system is one where the sun is at the center, and other celestial bodies (like planets) revolve around it.

• The first option is incorrect because a system where planets revolve around Earth is geocentric, not heliocentric.
• The second option is incorrect as retrograde rotation (opposite to the direction of revolution around the sun for most planets) is not the defining feature of a heliocentric system.
• The third option is incorrect because planets revolve around the sun, not their own moons (moons revolve around planets).
• The fourth option is correct as it matches the definition of a heliocentric solar system (planets revolving around the sun).

Answer:

D. All the planets revolve around the sun.