Here's a summary of the key terms for the fill-in-the-blank questions you provided:
- The sun is a mass of charged particles and magnetic fields.
- We call the sun's atmosphere the corona.
- The steady breeze of particles flowing out from the sun and filling the space between the planets is the solar wind.
- About 20 million miles out from the sun, the sun's magnetic field no longer controls the movement of the charged particles.
Feel free to ask if you need further clarification or additional information!