Biology, 16.12.2021 23:20, jjimenez0276
Suzy's science class is studying changes in particle motion during phase changes. Suzy is asked to add a few pieces of dry ice to a flask and cover it with a balloon. After a few minutes she observed the balloon starting to inflate. How can she explain this? A) The cooling effect of the dry ice as it undergoes a phase change from solid to liquid expands the gas and inflates the balloon. B) While the dry ice cools the flask, it undergoes a phase change from solid to liquid. The greater freedom of the particles expands the balloon. C) As the temperature rises, the dry ice undergoes a phase change from solid to gas. The expanding gas molecules exert pressure on the walls of the balloon. D) The dry ice particles under go a phase change from solid to liquid as it warms to room temperature and experiences an increased volume which inflates the balloon.
Answers: 2
Biology, 22.06.2019 01:00, mcalepcrager
Which of the following is an example of competition that could be found in a forest? question 14 options: deer eat berries and their droppings seed new areas creating more berry bushes two fox populations utilize the same rabbit population as their main food source two hawk populations utilize the same scorpion population as their main food source lack of sunlight due to changes in the seasons restricts the growth of certain plants
Answers: 1
Biology, 22.06.2019 01:40, warnene17
Elephants in the savanna regions of africa dig holes in dried up river beds to reach water lying just below the surface. these holes provide drinking water for other animals as well. so, without the elephants, many animals might otherwise die from lack of water during the dry season. the location in which the elephants live is an example of a/n and the role they play in creating water holes is an example of a a) ecosystem; habitat b) community; niche c) habitat; niche d) niche; habitat
Answers: 1
Biology, 22.06.2019 07:00, cheyenneisaboss22
Which statement best describes how the loudness of the sound affects the high-pressure region created by the sound wave? a. a louder sound has no effect on the pressure created. b. a louder sound means a high-pressure region that is higher. c. a louder sound means a high-pressure region that is not as high.
Answers: 1
Suzy's science class is studying changes in particle motion during phase changes. Suzy is asked to a...
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