ESS Semester 1 exam TEST B Write all your answers on the answer sheet provided. You may use your reference sheet. Unit 1: Working like a scientist Use the letter code on the top of your answer sheet to show which column of values you convert 1 2 3 B 2.543 kg = __________ g A. 2543 B. 2.543 C. 25.43 D. 25430 5672 m = __________ km A. 5672 B. 567.2 C. 5.672 D. 5672000 3982 ml = __________ L A. 3.982 B. 39.82 C. 0.3982 D. 3982000 Using a ruler, measure h and w on the figure to the right and match them to the correct answers: 4. h = ___________________ a. 7.0 b. 4.1 c. 6.0 d. 6.5 5. a. 3.2 w = ___________________ b. 2.6 c. 4.7 6. What are the correct units for h and w? a. g b. mL c. s d. 3.0 d. cm h 7. Calculate the volume of the cylinder (V = h x w2) a. 54 b. 18 c. 117 d. 216 8. The mass of the rectangular box was measured to be 235 g. Calculate the density: a. 4.35 b.0.23 c. 0.004 d. 28.9 w The table below shows the results of a student’s experiment. Use it to answer questions 9-11 Plant Group 1 2 3 4 5 6 Oxygen (%) 21 21 21 21 21 21 Experiment Carbon dioxide Nitrogen (ppm) (%) 350 78 400 69 450 59 500 49 550 39 600 29 Growth Rate (mm/day) 15 25 35 43 44 44 9. Which graph correctly plots the experimental data collected above? a. b. c. d. 10. Choose the best explanation to describe the relationship between the growth rate of plants and atmospheric carbon dioxide a. As Carbon dioxide increases, Nitrogen levels decreases b. As Nitrogen increases, growth rate increases c. Plant growth rate had no impact on oxygen levels d. As Carbon dioxide increases, growth rate increases 11. The growth rate of plants depends on other factors, including air temperature, soil moisture, amount of light and soil nutrients. What should the students do to test all these variables? a. Conduct the experiment with varying amounts of oxygen so that all three gases are changed b. Conduct the same experiment multiple times to account for the multiple variables c. Conduct the experiment using digital probes to ensure more accurate measurements d. Conduct the experiment multiple times, only changing one variable at a time Read the Abstract of Alexandra D. Singer’s experiment and then answer the questions 12 to 18 Name(s) Project Number: Alexandra D. Singer Project Title: How Do Increased Carbon Dioxide Levels Affect Plant Growth? Abstract Objectives/Goals: I am concerned about global warming and its impact on the environment. Carbon dioxide is one of the greenhouse gases increasing in concentration in the atmosphere due to the human action of burning fossil fuels. The purpose of my experiment was to find out how increased carbon dioxide levels affect plant growth. Methods/Materials: I conducted this experiment using two sets of plants. Each set had the same glass jar, plant type, amount of soil, and amount of water. For each set of plants, one of the plants was in a sealed glass jar with air and the other was in a sealed glass jar with increased carbon dioxide levels. Plant height was measured every few days for approximately three weeks. Results: At the end of the experiment increased carbon dioxide levels had a negative effect on plant growth. In other words, the plants in the jars with high levels of carbon dioxide did not grow as well as the plants in the jars with regular air. Conclusions/Discussion: I predicted that higher carbon dioxide levels would help plant growth but my experiment showed the opposite, that higher carbon dioxide levels actually hurt plant growth. I believe higher carbon dioxide levels have both positive and negative effects on plant growth. The positive part is that plants need carbon dioxide to make their food. On the negative side, carbon dioxide can reflect sunlight and so less sunlight reaches the plant. Plants need sunlight to make their food and so by blocking sunlight, carbon dioxide hurts plant growth. I have concluded that overall, carbon dioxide hurts plants. However, my experiment is one that many scientists who are concerned about global warming have studied with uncertain results. Summary Statement: This study will try to determine how increased carbon dioxide levels affect plant growth Answer the following question: 12. True / False: Ms. Singer’s conclusion agrees with the experiment from the other student above. 13. True / False: Based ONLY on the data in questions 12-14 compared to the abstract provided, you should have more confidence in Ms. Singer’s results and conclusion than the student who designed the previous experiment. 14. Identify Ms. Singer’s independent variable in the experiment a. Plant Height c. Carbon Dioxide b. Time in weeks d. Air 15. Identify Ms. Singer’s dependent variable in the experiment a. Carbon Dioxide c. Air b. Plant Height d. Time in weeks 16. Identify Ms. Singer’s experimental group a. Glass jars with air b. Human action of burning fossil fuels c. Glass jars with Carbon Dioxide d. Measurement of plant height 17. Identify Ms. Singer’s control group a. Glass jars with air b. Human action of burning fossil fuels c. Glass jars with Carbon Dioxide d. Measurement of plant height 18. State Ms. Singer’s original prediction as a formal hypothesis. a. If carbon dioxide is placed in jars with a plant then plant height will increase over time. b. If air and carbon dioxide are placed in separate jars with a plant then the jars with air will produce taller plants. c. If air is placed in jars with a plant then plant height will decrease. d. If carbon dioxide is produced by fossil fuels then plant height will decrease. Unit 2: The Atmosphere 19. Most of the sun’s radiation is first absorbed by clouds in the atmosphere. a. True b. False 20. The hottest layer of the atmosphere is closest to the Earth’s surface. a. True b. False 21. What is the proportion of Carbon Dioxide in the atmosphere as of 2017? a. 30 ppm b. 150 ppm c. 1015 ppm d. 400 ppm 22. What is the proportion of Nitrogen in the atmosphere? a. 21% b. 34% c. 78% d. 1% 23. Oxygen makes up most of the atmosphere’s composition because organisms need it for life. a. True b. False 24. What is the force that moves a parcel of air horizontally as wind? a. Differences in Carbon Dioxide concentrations c. Differences in humidity To the right is a figure representing a parcel of air moving vertically through the atmosphere. Use it to answer questions 25 and 26 25. Describe the method of heat transfer that causes the air mass to rise through the atmosphere. a. Convection b. Conduction c. Absorption d. Radiation 26. At which altitude will condensation occur in the parcel of air? a. Evaporation will not occur at any of the altitudes b. Surface c. 2000 feet d. 4000 feet 27. ___________________ is the method through which energy from the sun reaches the Earth. a. Radiation b. Adiabatic heating c. Conduction d. Convection 28. ___________________ is the method through which heat is transferred by molecules coming into direct contact with each other. a. Radiation b. Adiabatic Heating c. Conduction d. Convection b. Differences in human activity d. Differences in air pressure Using the diagram below, answer questions 29 and 30 29. The changes in wind direction between day and night are due to differences in _________________ between the land and the ocean. a. density b. latitude c. specific heat d. friction 30. During the daytime, where can an area of lower pressure be found? a. atmosphere over water b. atmosphere over land c. photosphere d. hydrosphere Unit 3: Causes of Climate 31. Which pair of factors affect the amount of solar radiation absorbed by the Earth’s surface? a. prevailing winds and mountains areas b. ocean currents and amount of the Earth’s surface that is covered by glaciers c. surface the tilt of Earth on its axis, and the path Earth follows as it revolves around the Sun? d. whether the area is close to a large body of water, and the tilt of the Earth on its axis 32. What causes the Coriolis effect? a. Earth’s shape c. poles Earth’s rotation b. Redistribution of energy from Equator to the d. Earth’s revolution around the Sun 33. Greenhouse gases behave similarly to the glass in a greenhouse because a. They trap heat energy b. They trap water vapor c. They trap ultraviolet radiation d. They keep plants alive in winter Base your answers to questions 34 & 35 on the diagram to the right 34. Based on the diagram, we can infer that winds blow from areas of ______________. a. high latitude to regions of low latitude b. high pressure to regions of low pressure c. high altitude to regions of low altitude d. high temperature to regions of low temperature 35. The paths of surface winds shown in the diagram curve due to Earth’s ___________. a. gravitational field b. magnetic field c. revolution d. rotation Base your answers to questions 36 &37 on the diagram to the left 36. Which type of air mass is cold and dry? a. polar continental b. polar maritime c. tropical continental d. tropical maritime 37. Identify how the mP air mass would likely be modified as it travels across North America in December. a. carbon will be transferred from the air mass to the ground b. heat will be transferred from the air mass to the ground c. cold will be transferred from the ground to the air mass d. moisture will be transferred from the ground to the air mass 38. In which region does incoming sunlight spread at the shallowest angle? a. polar zone b. equatorial zone c. tropical zone d. temperature zone 39. What happens to air in the tropics as it is warmed and water evaporates? a. It spreads out horizontally near the ground forming fog b. It becomes saturated with water vapor, which increases its density, keeping the air trapped in that zone c. It is cooled again by falling rain d. The resulting warm, moist air rises and cools 40. Polar and tropical regions stay at fairly constant average temperatures because a. the constant motion of air and water redistributes heat over the Earth b. the Sun always strikes these regions at the same angle c. air masses remain stationary near the poles and equator, maintaining constant temperatures d. the surface of these regions re-radiates extra energy back into space 41. Why does the windward side of this mountain range have a wet climate? a. Rising air expands and warms, causing water droplets to evaporate b. Rising air is compressed and cools, causing water droplets to evaporate c. Rising air is compressed and warms, causing water vapor to condense d. Rising air expands and cools, causing water vapor to condense Unit 4: Climate Change 42. Which of the following is NOT a concerning consequence of the continued trend illustrated by the graph to the left? a. The mass migration of people displaced by the loss of coastal cities b. Increased carbonic acid in the world’s oceans c. The extinction of species that are not well adapted for rapid climate change d. Loss of ozone in the atmosphere Use the excerpt to answer number 43 In the 19th century, English astronomer E.W. Maunder and his wife, analyzed data collected during the 17th century during which time Europeans were famously (and unusually) skating on the major rivers running through their cities. (“Winter landscape with iceskaters” c. 1608, Hendrick Avercamp). 43. Identify the factor attributed to this climate change event a. The eruption of Mt St.Helen’s b. Sun spot cycles c. Change in the obliquity of the Earth’s axis d. Extended El Nino events Organize the following climate change events on the relevant time scale (You will use one answer more than once!) 45. Changes in shape of Earth’s orbit A Months 46 Wobble in Earth’s axis B Years 47. Mt Pinatubo D Centuries 48. Plate tectonics E Thousands of years 49. Burning fossil fuels F Millions of years 50. Seasons due to obliquity 44. Choose the angle of tile of Earth’s axis which is most likely to result in extreme changes between the seasons. a. 23.5o b. 24.5o c. 10o d. 22.1o 45. What role do modern day forests play in the carbon cycle? a. Breathing out oxygen in photosynthesis b. Making coal used to burn for energy c. Making shade d. Taking in carbon dioxide through photosynthesis Read the passage below, analyze the graph and answer question 54. In the spring and summer of 1816, a persistent "dry fog" was observed in parts of the eastern United States. The fog reddened and dimmed the sunlight and neither wind nor rainfall dispersed it. The weather was not itself a hardship for those accustomed to long winters. The real problem lay in the weather's effect on crops and thus on the supply of food and firewood. In Cape May, New Jersey, frost was reported five nights in a row in late June, causing extensive crop damage. At the Church Family of Shakers near New Lebanon, New York, Nicholas Bennet wrote in May 1816, "all was froze" and the hills were "barren like winter". Temperatures went below freezing almost every day in May. The ground froze on June 9. On June 12, the Shakers had to replant crops destroyed by the cold. On July 7, it was so cold, everything had stopped growing. The Berkshire Hills had frost again on August 23, as did much of the upper northeast. In July and August, lake and river ice was observed as far south as northwestern Pennsylvania. Frost was reported as far south as Virginia on August 20 and 21. Thomas Jefferson, retired from the presidency and farming at Monticello, sustained crop failures that sent him further into debt. On September 13, a Virginia newspaper reported that corn crops would be one half to twothirds short and lamented that "the cold as well as the drought has nipt the buds of hope". (Source: Wikipedia “A year without a summer”) SULFATE SOLID PARTICLES IN ICE CORE DATA FROM GREENLAND 46. Choose the most likely candidate for this 19th century climate change event a. An El Nino event b. Wobble in the Earth’s axis c. Sun spot cycles d. Large volcanic eruption 47. Scientists hypothesize that an increase in atmospheric CO2 leads to an increase in the atmosphere’s absorption of a. oxygen b. volcanic ash c. solar radiation d. water vapor Use the following climograph to answer questions 48-50 48. What is the driest month at this particular location? a. January b. May c. July d. December 49. What is the warmest month at this particular location? a. July b. May c. August d. April 50. What is the average temperature of the coldest month at this particular location? a. 40 degrees Celcius b. -20 degrees Celcius c. 20 degrees Celcius d. 0 degrees Celcius