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Introduction to Environmental Science A unit 1 Exam 53
Questions with Verified Answers
Lesson 1 – what is science? What is an example of science? - CORRECT ANSWER studying the universe, including motions, positions, and interactions of celestial objects What is environmental science? - CORRECT ANSWER the studying of the composition of the environment and organisms' interactions within the environment Which are human causes of extinction? select all that apply. - CORRECT ANSWER burning of fossil fuels introduction of a foreign species How is conservation defined? - CORRECT ANSWER conservation is the careful management of resources and the preservation of wildlife and habitats how is proper science validated? - CORRECT ANSWER experimentation and testing what type of science is a pseudoscience? - CORRECT ANSWER false which scientific questions can be disproved by conducting tests? select all that apply. - CORRECT ANSWER can monkeys communicate with each other? are vegetables good for growing strong bones? do video games negatively impact mental health? which claim is credible? - CORRECT ANSWER from a university article: "flying squirrels can move through the air quickly, gliding to trees." what is the focus of environmental science? - CORRECT ANSWER solutions to environmental problems
which are causes of extinction? - CORRECT ANSWER cutting down forests, overfishing match each contribution to science with the correct individual. - CORRECT ANSWER rachel carson: warned of the dangers of pesticides and herbicides robert shelford: collected different insects specimens frank egler: encouraged scientific research in ecology marjory stoneman douglas: advocated for the preservation of the everglades who helped found a national park and a group called friends of the everglades? - CORRECT ANSWER marjory stoneman douglas how did robert shelford contribute to the study of environmental science? - CORRECT ANSWER he studied and collected insects what is ecological succession? - CORRECT ANSWER ecological succession is a predictable and sequential series of changes to a community that occurs over time lesson 2 - CORRECT ANSWER careers in environmental science a community is concerned about the impact a new factory may have on the environment. which environmental science career could help with the concern? - CORRECT ANSWER environmental engineer living sea corals are losing their color. which environmental science career would study this? - CORRECT ANSWER marine biologist lesson 3 - CORRECT ANSWER the scientific method why are hypotheses important? - CORRECT ANSWER they allow scientists to question observations in the world around them and explore answers, which can lead to new discoveries.
a student performs an experiment where he collects a sample of water to test the cloudiness of the water. which of these factors may affect the result of the test? select all that apply. - CORRECT ANSWER amount of total sample collected time at which the sample was collected depth from which the sample was collected a student performs an activity where a rubber ball is dropped from different heights and the height to which it bounces back is recorded. which tool might help in collecting the data for the activity? - CORRECT ANSWER 100-foot appraiser's tape a student collected four different samples of river water for an experiment at a specific time of day and a specific location along the river. each sample that was taken had a different volume. the student added a random number of drops of reactant to each of the samples. her results showed inconsistencies compared to what she expected. what might have caused this? select all that apply. - CORRECT ANSWER the difference in the volume of water that was sampled the random number of drops of reactant added to each sample what is the purpose of using a calibration standard? - CORRECT ANSWER to identify and remove any bias in an instrument a student performs an experiment to study the turbidity of water from a nearby pond. the turbidity of the water is measured using a mass spectrophotometer. the student repeats the experiment three times using the same sample of water. what might have caused the inconsistent results? - CORRECT ANSWER use of an uncalibrated mass spectrophotometer
a student performs an activity where a ball is allowed to roll down an inclined ramp. after the ball is released from the peak of the ramp, the student wants to measure the distance that the ball travels. which of these units would be appropriate for measuring the distance traveled by the ball? - CORRECT ANSWER meters lesson 4 - CORRECT ANSWER data how does accuracy differ from precision? - CORRECT ANSWER accuracy is the closeness of the measured value to the true value, while precision is the closeness of the measured values to each other. a student fills a beaker with distilled water and marks the volume as 92.5 mL. after completing the experiment, the student records the final volume of the distilled water in the beaker as 47.61 mL. which option shows the volume of distilled water used in the experiment with the correct significant digits? - CORRECT ANSWER 44.9 mL a gym member records their calorie burn every day to track their progress. what is the mean, median, and range, respectively, of the amount of calories burned over a week? - CORRECT ANSWER 574.3, 590, and 370 study the graph. https://cdstools.flipswitch.com/asset/media/ examine the data in the graph. based on the trends in averages, what conclusion can be made? - CORRECT ANSWER the average global temperature increased from 1880 to 2010. a student is checking the density of a gold nugget. the known density of gold is 19.32 g/cm3. the student tests the nugget three times and comes up with 19. g/cm3, 19.17 g/cm3, and 19.19 g/cm3.
using dimensional analysis, how fast is the toy car moving in km/hr? - CORRECT ANSWER 36 km/hr a student is measuring how fast toy cars move. the student records the following speeds of the cars. the student calculates mean, median, and range. match each statistical analysis type with the correct answer. - CORRECT ANSWER mean : 5. median : 5. range : 2. review the graph, which illustrates average monthly temperatures in sacramento, california, and kansas city, kansas. what conclusion is best supported by the graph? - CORRECT ANSWER kansas city has a greater change in temperature over the year than sacramento. a student concludes that insect mass appears rapidly and at high rates in may, peaks in july, and disappears again in october. what can the student infer from the graph regarding this conclusion? - CORRECT ANSWER insects die in the winter, leaving behind eggs to hatch in the spring when it is warm enough. this graph represents a relationship between a predator and its prey. identify the pattern found in the graph and predict the trend. - CORRECT ANSWER approximately every 10 years, the population of each organism decreases and then increases again. based on this data, the trend will continue. which is a trend found in the graph? - CORRECT ANSWER the population is increasing exponentially. lesson 5 - CORRECT ANSWER impacts on society how has research affected scientific thinking? select all that apply. - CORRECT ANSWER research has helped scientists see new ways to approach problems.
research has helped scientists questions and solve problems how can research positively affect society? select all that apply. - CORRECT ANSWER it can help societies find ways to solve problems based on facts. it can improve disease outcomes for societies such as with vaccines. how did research conducted on polluted drinking water in flint, michigan, impact the environment? - CORRECT ANSWER the amount of harmful chemicals in the water was reduced. how do societies use scientific knowledge from research? select all that apply. - CORRECT ANSWER societies use scientific knowledge to help make informed decisions. societies use data from research to find solutions to problems and to prevent other problems.
