Author Question: Large circulation patterns in the Sun, dubbed Conveyor Belts, transport material from the equator to ... (Read 58 times)

mydiamond · **on:** Jul 27, 2018

Large circulation patterns in the Sun, dubbed Conveyor Belts, transport material from the equator to the poles, then back to the equator at a depth of 300,000 km, take how long to complete a cycle?

A) Less than a day
B) A few years
C) A few decades
D) A few centuries
E) Tens of millions of years, comparable to the convection cycle in Earth's mantle

Question 2

How does the Sun generate energy today?

A) nuclear fission
B) nuclear fusion
C) chemical reactions
D) gravitational contraction
E) gradually expanding in size