Exam 16: The Sun: Our Parent Star

Solar activity cannot disrupt communications on Earth.

In the proton-proton cycle, .007 of the mass ends up as energy, not helium.

The chromosphere is red because it is hot enough to ________ hydrogen atoms.

In contrast to the photosphere's continuum, the spectrum of the chromosphere is dominated by________ lines.

The energy of the Sun starts as radiation, but is actually transported to its surface byconvection, where it is radiated off into space at last.

In the proton-proton cycle, the helium atom and neutrino have less mass than the originalhydrogen. What happens to the "lost" mass?

Suppose a large flare is detected optically. How long until radio interference arrives?

How is the Sun's luminosity measured?

The Sun's mass and volume are over a million times that of our Earth.

Studies by the Global Oscillations Network Group, along with satellite observations,indicate:

Energy produced in the solar core is transferred by ________ until it reaches a point about500,000 km from the center.

The above diagram indicates that:

A loop of gas following the magnetic field lines between sunspots' poles is:

As the Sun rotates, an individual sunspot can be tracked across its face. From eastern towestern limb, this takes about:

When the chromosphere can be seen during a solar eclipse, it appears:

A solar flare creates a radio disturbance on Earth a few minutes after going off and againseveral days later. Explain.

Sunspots:

We know the Sun rotates differentially by observing sunspots; as with Jupiter the solarequator rotates the fastest.