Earth and Space：练习题

Which of the following bodies in space is a natural satellite of the Earth?

Which of the following statements best explains why the Moon appears to change shape throughout the month?

How long does it take for the Earth to complete one full orbit around the Sun?

In the context of the solar system, why does the Sun appear to move across the sky from East to West during the day?

Earth and Space
In the diagram of our solar system, which planet is known as the 'Red Planet' due to the iron oxide on its surface, and what is its position relative to the Sun (e.g., 1st, 2nd, etc.)?

Earth and Space
The Earth is one of eight planets orbiting the Sun in our solar system.

(a) Name the four inner rocky planets in order, starting from the one closest to the Sun.
(b) Does the Moon produce its own light? Explain how we are able to see it from Earth.
(c) Explain why the Sun appears to rise in the East and set in the West each day.

Our solar system consists of the Sun and various celestial bodies that orbit it. Answer the following questions about the components and characteristics of our solar system:

(a) Besides planets, identify two other types of celestial bodies that are part of the solar system and orbit the Sun.

(b) The planets in our solar system are often divided into two groups: Terrestrial planets and Gas Giants. State two main physical differences between these two groups.

(c) Explain why the Sun is considered the center of the solar system and why it is essential for the planets to stay in their orbits.