Question

Analyze the following terms and phrases about solar activity. Select the two that represent correct matches between cause and effect.
Responses

sun's magnetic field -- uneven churning of the sun's gravitational field
sun's magnetic field -- uneven churning of the sun's gravitational field - no response given

coronal mass ejection -- relatively cool spot on surface of the sun
coronal mass ejection -- relatively cool spot on surface of the sun - no response given

solar activity -- sudden eruptions of large bubbles of plasma and magnetic energy
solar activity -- sudden eruptions of large bubbles of plasma and magnetic energy - no response given

solar flare -- sudden release of magnetic energy
solar flare -- sudden release of magnetic energy - no response given

sunspot -- magnetic field of the sun emerges as a loop

Answer 1

Correct matches:
- solar flare — sudden release of magnetic energy
(Solar flares are rapid releases of magnetic energy in the solar atmosphere.)

- sunspot — magnetic field of the sun emerges as a loop
(Sunspots mark locations where magnetic flux tubes emerge through the photosphere, often forming bipolar pairs.)

Why the others are wrong (brief):
- sun's magnetic field — uneven churning of the sun's gravitational field: incorrect wording; the solar magnetic field is generated by plasma motions (differential rotation and convection) via a dynamo, not by the gravitational field.
- coronal mass ejection — relatively cool spot on surface of the sun: wrong; a CME is a large eruption of plasma and magnetic field into space. A relatively cool spot on the surface is a sunspot.
- solar activity — sudden eruptions of large bubbles of plasma and magnetic energy: this describes coronal mass ejections specifically; "solar activity" is a broad term covering flares, CMEs, sunspots, etc.