What two roles do ring moons play in the nature of planetary ring systems?
What will be an ideal response?
Gravitational pull of nearby moons tends to "shepherd" ring particles by gravitationally altering their orbits. Material is continually recycled between the rings and the ring moons. The ring moons gradually sweep up particles, which are subsequently ejected by collisions with large chunks of ring material.
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Which of the following energy sources has the least environmental impact?
A. wind B. nuclear C. coal D. natural gas
The Congress Party in India is dominated by the
A. Kshatriyas B. Vaishayas C. Brahmins D. Jatis
How does a terminal moraine differ from a recessional moraine? What will be an ideal response?
Nonmetallic minerals used for abrasives include ________
A) topaz and fluorite B) talc and gypsum C) apatite and hematite D) corundum and garnet