Exam 7: The Sun

Sunspots often appear in pairs.

Energy flows from hot to cold and thus from the core to the surface of the Sun.

The number of sunspot cycles in a solar magnetic cycle is ___________.

When four hydrogen are fused to make one helium nuclei, a small amount of matter is converted into what?

The above image of the Sun is a false-color image.

The Sun appears to rotate only because Earth is revolving about the Sun.

The above image is of the active Sun's corona taken in far ultraviolet wavelengths. If you wanted to show higher elevations of the Sun's corona, which wavelength band would you choose to take your image?

Spicules

The above picture shows how temperature varies through the atmospheric layers of the Sun. The bottom thermometer is shown to be in the chromosphere.

The gas motions within granules on the solar surface are

Nuclear reactors use nuclear _____________ to generate energy whereas the Sun uses nuclear ____________ to generate energy.

Sunspots are dark because

Sunspots are known to be magnetic phenomena because

________ is (are) produced by atomic transitions in the presence of a strong magnetic field.

Which of the following is evidence that convection occurs in the layers just below the Sun's photosphere?

Discuss a theory that explains how the corona is heated.

Much of the solar wind comes from ________ where the magnetic field does not loop back into the Sun.

The proton-proton chain

Sunspots occur in ______________ with the leading spot and the trailing spot having ________________ magnetic polarity.

Sunspots are hotter than the photosphere.