With the exception of people that die in 2010 (because the estate tax is repealed for this one year period), the answer is yes. Estate taxes and the effect of life and remainder estates can be very complicated. There are also generation skipping tax issues. I encourage you to consult a knowledgable professional.
Because the child's parents parents are called grandparents.
Your ancestry. Those you have descended from are your ancestors. My lineage includes my parents, grandparents, great-grandparents, etc., in my past, and my children, grandchildren, great-grandchildren, etc. in my future.
Yes, if there are no descending heirs such as children, grandchildren and so on, then an estate passing by intestacy goes to the ascendants, meaning the parents, then siblings and their issue. If there are no parents and siblings or issue of siblings, then it goes further up to grandparents.
Your ancestry. Those you have descended from are your ancestors. My lineage includes my parents, grandparents, great-grandparents, etc., in my past, and my children, grandchildren, great-grandchildren, etc. in my future.
Grandparents have no legal right to have custody over their grandchildren like parents do. Any relative have the same right to petition for custody if the parents are gone. If the parents are there they are the ones deciding where the child will live.Grandparents can have the right to petition for visitation though depending on which state they are in. That is something other relatives don't have. The laws differs on grandparents rights. The court usually don't go against parents wishes though.Another PerspectiveYou asked about grandchildren's rights to their grandparents. Unfortunately, the parents have the right to make decisions for their minor children. If the parents decide to keep their children from seeing their grandparents they may do so.
They can but if the parents disagree with the exposure, they can put a stop to it by reducing time exposed or eliminating it altogether. The Grandparents should run it by the parents first for consent.
They teach their children and grandchildren the rules and laws of Shabbat.
Unless your parents do not like children or are abusive to you then do not be selfish and immature and give them the pleasure of seeing you because most grandparents love their grandchildren. Be mature and realize that you will give great joy by visiting your grandparents.
States with the highest percentage of grandparents living with their grandchildren include West Virginia, Louisiana, and Mississippi. These states have higher rates due to factors such as poverty, substance abuse, or incarceration affecting the parents' ability to care for their children.
Grandmothers love their grandchildren so much because they get to spoil them and they get to give them a different love than they did with their own kids. They don't raise them and get to enjoy them.
great great (etc.) grandparents great grandparents grandparents + great uncles and great aunts parents + uncles and aunts [=parents' siblings] siblings + cousins [=uncles' and aunts' children] children + nephews and nieces [=siblings' children] grandchildren great gandchildren great great (etc.) grandhildren also cousins and second cousins [=(great-)grandparents' descendants]
great great (etc.) grandparents great grandparents grandparents + great uncles and great aunts parents + uncles and aunts [=parents' siblings] siblings + cousins [=uncles' and aunts' children] children + nephews and nieces [=siblings' children] grandchildren great gandchildren great great (etc.) grandhildren also cousins and second cousins [=(great-)grandparents' descendants]