We Know the Sun's Corona Is Very Hot Because

question 47

Multiple Choice

We know the Sun's corona is very hot because

• A) we observe it emitting radiation at visible wavelengths.
• B) the chromosphere and the photosphere are that hot, too.
• C) we observe absorption from highly ionized atoms of iron and calcium in its spectrum.
• D) the gas emits most of its radiation at radio wavelengths.
• E) all of the above

---

Definitions:

Bias

A systematic error or deviation from true values or processes in data collection, analysis, interpretation, and review that can lead to incorrect conclusions.

Resample Means

A statistical method involving the calculation of the mean from multiple subsamples of a dataset to assess variability.

Original Data Set

The initial collection of data or observations before any processing or analysis has been conducted.

Trimmed Mean

A measure of central tendency calculated by removing a certain percentage of the smallest and largest values from a data set before calculating the mean of the remaining data.