The Corona Is So Dim That It Is Not Visible

Q21: The upper chromosphere is hot enough to

Q22: Helioseismology maps of rotation in the Sun's

Q23: The number of _ visible on the

Q24: Match the solar characteristic to its definition.

Q25: The solar wind extends to the _

Q27: Which of the natural forces bind atomic

Q28: Historical records show that there were very

Q29: What are the only four forces that

Q30: Which is the correct order of the

Q31: The Sun is a ball of hot