Question

question 5 (5 points)
listen
when does an object break up due to gravity and tidal forces as it approaches a planet?
a) when it becomes tidally locked to the planet
b) when its density is very high
c) when it moves past the planet very quickly
d) when it passes the roche limit
question 6 (5 points)
listen
which of the following explanations accounts for the formation of sunspots?
a) magnetic field reversal causes portions of the sun to die slowly over time, leaving dark marks.
b) the curvature of magnetic fields near the suns equator creates pockets in the photosphere that arent warmed by convection.
c) volcanic eruptions are sustained by the photosphere, resulting in hardened lava on the suns surface.
d) the movement of plasma is much faster on the poles than on the suns equator, and this creates pockets of intense heat.

Explanation:

For Question 5, the Roche limit is the distance within which a celestial body, held together only by its own gravity, will disintegrate due to a second celestial body's tidal forces exceeding the first body's gravitational self - attraction. For Question 6, sunspots are formed because the curvature of magnetic fields near the sun's equator inhibits convection in certain regions of the photosphere, creating cooler, darker areas.

Answer:

Question 5: D. When it passes the Roche limit
Question 6: B. The curvature of magnetic fields near the sun's equator creates pockets in the photosphere that aren't warmed by convection.