Question

select the correct answer from each drop-down menu.

study this model of earth, the moon, and the sun. then answer the questions.

in this model, number 1 represents choose an answer, number 2 represents choose an answer, and number 3 represents choose an answer.

Explanation:

Analyze the orbital relationships in the diagram

The diagram shows three nested or intersecting circular orbits representing the Earth, the Moon, and the Sun.

• There is a large central circle containing a smaller circle labeled 1. This represents a body at the center of a larger orbit.
• There is a second system intersecting the outer boundary of the large circle. This system consists of a medium circle containing a smaller circle labeled 2, and a small circle labeled 3 orbiting on the boundary.
• In the actual Earth-Moon-Sun system, the Earth orbits the Sun, and the Moon orbits the Earth.
• Therefore, the largest circle represents the orbit of the Earth around the Sun. The Sun is at the center of this large orbit, which means circle 1 represents the Sun.
• The body orbiting the Sun is the Earth. Thus, the medium circle intersecting the large orbit represents the Earth, and its center 2 represents the Earth.
• The smallest body orbiting the Earth is the Moon, which is represented by circle 3.

Identify the representation of each number

Using the orbital relationships:

• Number 1 is at the center of the entire system, representing the Sun.
• Number 2 is the body orbiting the Sun, representing the Earth.
• Number 3 is the smaller body orbiting the Earth, representing the Moon.

Answer:

In this model, number 1 represents <blank>the Sun</blank>, number 2 represents <blank>the Earth</blank>, and number 3 represents <blank>the Moon</blank>.