*Question E2A01:
What is the direction of an ascending pass for an amateur satellite?*  

*Correct Answer is  C: From south to north*  

### AI Response: (may contain errors)  

An ascending pass for an amateur satellite refers to the satellite's movement as it travels from the southern hemisphere to the northern hemisphere. This is why the correct answer is:

- **C: From south to north**

### Explanation:

1. **Why the correct answer is correct:**
   - An ascending pass means the satellite is moving upward relative to the Earth's surface. In terms of direction, this means it is moving from the southern part of the Earth to the northern part. This is typically observed when the satellite crosses the equator heading north.

2. **Why the other choices are incorrect:**
   - **A: From west to east**  
     This describes an orbital direction known as "prograde" or "direct," which is common for many satellites, but it does not specifically describe an ascending pass.
   - **B: From east to west**  
     This describes a "retrograde" orbit, which is less common and also does not specifically describe an ascending pass.
   - **D: From north to south**  
     This would describe a descending pass, where the satellite moves from the northern hemisphere to the southern hemisphere, opposite to an ascending pass.

### Useful Rule of Thumb:

- **Ascending vs. Descending Passes:**  
  - **Ascending Pass:** Moves from south to north.
  - **Descending Pass:** Moves from north to south.

Understanding these terms helps in predicting satellite passes and planning communication sessions with amateur satellites.