Ardipithecus essays

Ardipithecus essays Anthropologists have found the remains to what they classified as a distinct genus they called Ardipithecus. Ardipithecus has many characteristics that some may consider to be a hominid but there are also some evidence that point to the other direction that Arditpithecus is not a hominid. It is the most apelike hominid ancestor known (Boaz and Almquist, 2002). Ardipithecus is the earliest potential hominid found so far and was discovered in Ethiopia in 1994 by Tim White and his colleagues. So where exactly were these fossils found? These fossils were found in a dense forest with a relatively cool and wet climate. In contrast, early hominids were found in a savannalike setting (Boaz and Almquist, 2002). The origin of bipedalism took place in the savanna. Our ancestors were more adapted in opened grasslands. They left the trees and become bipedal. Bipedalism is considered the essential feature of being human. Therefore, from this I can conclude that Ardipithecus is not a hominid. However, there could be that little chance that Ardipithecus did migrate to the forest bipedally or because there was a climate change, which caused the forest to turn into a savanna. On the other hand, Bernard Wood, a professor of human origins at George Washington University, is questioning whether bipedalism is considered to be the defining characteristic of being human. After all, all birds have wings, but not all creatures with wings are birds. From this analysis, it would mak e it still too difficult to accept the fact that it could be a hominid. Yet, due to the discovery of Ardipithecus fossils, the answer to the question of whether it is a hominid or not was answered. Tim White and his colleagues did not have much to work with. It was nothing like Don Johansons discovery of Lucy. However, it was enough for them to conclude that Ardipithecus is not a hominid. The evidence accumulating right before their eyes told them tha...

20 Elapsed Time Word Problems

20 Elapsed Time Word Problems Elapsed time is the amount of time that passes between the beginning and the end of an event. The concept of elapsed time fits nicely in the elementary school curriculum. Beginning in third grade, students should be able to tell and write time to the nearest minute and solve word problems involving addition and subtraction of time. Reinforce these essential skills with the following elapsed time word problems and games. Elapsed Time Word Problems These quick and easy elapsed time word problems are perfect for parents and teachers who want  to help students practice elapsed time to the nearest minute with simple mental math problems. Answers are listed below. Sam and his mom arrive at the doctor’s office at 2:30 p.m. They  see the doctor at 3:10 p.m. How long was  their wait?Dad says dinner will be ready in 35 minutes. It’s 5:30 p.m. now. What time will dinner be ready?Becky is meeting her friend at the library at 12:45 p.m. It takes her 25 minutes to get to the library. What time will she need to leave her house to arrive on time?Ethan’s birthday party started at 4:30 p.m. The last guest left at 6:32 p.m. How long did Ethan’s party last?Kayla put cupcakes in the oven at 3:41 p.m. The directions say that the cupcakes need to bake for 38 minutes. What time will Kayla need to take them out of the oven?Dakota arrived at school at 7:59 a.m. He left at 2:33 p.m. How long was Dakota at school?Dylan started working on homework at 5:45 p.m. It took him 1 hour and 57 minutes to complete it. What time did Dylan complete his homework?Dad arrives home at 4:50 p.m.  He left work 40 minutes ago. What time did Dad get o ff work?  Jessica’s family is traveling from Atlanta, Georgia to New York by plane. Their flight leaves at 11:15 a.m. and should take 2 hours and 15 minutes. What time will their plane arrive in New York? Jordan got to football practice at 7:05 p.m. Steve showed up 11 minutes later. What time did Steve get to practice?Jack ran a marathon in 2 hours and 17 minutes. He crossed the finish line at 10:33 a.m. What time did the race start?Marci was babysitting for her cousin.  Her cousin was gone for  3 hours and 40 minutes. Marci left at 9:57 p.m. What time did  she start babysitting?  Caleb and his friends went to see a movie at 7:35 p.m. They left at 10:05 p.m. How long was the movie?Francine got to work at 8:10 a.m. She left at 3:45 p.m. How long did Francine work?Brandon went to bed at 9:15 p.m. It took him 23 minutes to fall asleep. What time did Brandon fall asleep?Kelli  had to wait  in a long, slow-moving  line to purchase a popular new video game that was just released. She got in line at 9:15 a.m. She left with the game at 11:07 a.m. How long did Kelli wait in line?Jaydon went to batting practice Saturday morning at 8:30 a.m. He left at 11:42 a.m. How long was he at batting practice?Ashton got behind on her reading assignment, so she had to read  four chapters last night. She started at 8:05 p.m. and finished at 9:15 p.m. How long did it take Ashton to catch up on her assignment? Natasha has a dentist appointment at 10:40 a.m. It should last 35 minutes. What time will she finish?Mrs. Kennedy’s 3rd-grade class is going to the aquarium on a field trip. They are scheduled to arrive at 9:10 a.m. and leave at 1:40 p.m. How long will they spend at the aquarium? Elapsed Time Games Try these games and activities at home to help your children practice elapsed time. Daily Schedule Let your children keep track of their schedule and ask them to figure the  elapsed time for each activity. For example, how long did your child spend eating breakfast, reading, taking a bath, or playing video games? How Long Will It Take? Give your kids practice with elapsed time by encouraging them to figure out how long daily activities take. For example, the next time you order a pizza online or by phone, youll probably be given an estimated delivery time. Use that information to create a word problem thats relevant to your childs life, such as, Its 5:40 p.m. now and the pizza shop says the pizza will be here at 6:20 p.m. How long will it take for the pizza to arrive? Time Dice Order a set of time dice from online retailers or teacher supply stores. The set  contains two twelve-sided dice, one with numbers representing the hours and the other with numbers representing minutes. Take turns rolling the time dice with your child. Each player should roll twice, then calculate the elapsed time between the two resulting dice times. (A pencil and paper will come in handy, as youll want to jot down the time of the first roll.) Elapsed Time Word Problem Answers 40 minutes6:05 p.m.12:20 p.m.  2 hours and 2 minutes4:19 p.m.6 hours and 34 minutes7:42 p.m.4:10 p.m.1:30 p.m.7:16 p.m.8:16 a.m.6:17 p.m.2 hours and 30 minutes7 hours and 35 minutes9:38 p.m.1 hour and 52 minutes3 hours and 12 minutes1 hour and 10 minutes11:15 a.m.4 hours and 30 minutes