EESA01_2009_Midterm_Test-key - University of Toronto...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
University of Toronto – Scarborough Instructor: Prof. Carl Mitchell “Introduction to Environmental Science” (EESA01 L01 and L60) Mid-Term Examination: Saturday, October 24, 2009, 5-7 pm. Time Allotted: 2 hours. This mid-term examination has 70 questions and is worth 25% of your final grade. INSTRUCTIONS: Answer ALL questions on the SCANTRON sheet provided. Choose the answer which is most correct. Make only one mark per answer. Use either pencil (preferred) or black ball-point pen. Do not use felt-tipped pens or anything that writes in red. If you make a mistake, call over an invigilator; do not attempt to make corrections on the Scantron sheet. ANSWER ALL THE FOLLOWING QUESTIONS: 1. The scientific process and knowledge are based on: a) observation b) testing hypotheses that are built on observations c) the fact that hypotheses can be proven d) quantitative data only e) educated guesses 2. An experiment: a) is an activity designed to test the validity of a hypothesis b) should involve manipulating as many variables as possible c) does not need to be repeated d) is designed to prove a scientific hypothesis e) all the above except (c) 3. Ruben has a new puppy and wants to feed it the best possible food. He decides on an experiment where he will feed it the very best canned food plus a dietary supplement of vitamins recommended by a veterinarian. Which of the following best describes Ruben’s project? a) This is an example of an excellent, controlled experiment as it is written. b) Ruben needs to take careful measurements of the puppy’s weight and height at least once a week for it to be a good experiment. c) Ruben needs to control for the amount of exercise, sunshine, water, and care that the puppy gets each week, so that they are equal from week to week. d) Both (b) and (c) above. e) None of these options would make this a proper experiment. 1
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
4. Nearly 50% of the land on Earth is currently used for agriculture. If everyone on the planet had an ecological footprint the size of the average citizen of Canada, then: a) we would have 50% more food to go around b) we would be able to provide for everyone without much difficulty, using the other 50% of the land currently not being used c) we would need at least two more planet Earths to feed and support everyone d) we could support 50% more people on Earth e) about 50% of people on Earth would starve 5. Sustainable development: a) ensures an economy that will decline over time b) means consuming resources without compromising future availability c) is impossible to accomplish d) is beyond our current technology and attitudes e) is possible given our increased use of fertilizers and technology for agriculture 6. In a controlled experiment, _______: a) the researcher has several hypotheses, one of which will be proven correct b) the researcher knows the outcome before she or he begins c) the experimental organisms have all been used before and given good results d) the research controls for the effects of all variables except one
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Page1 / 14

EESA01_2009_Midterm_Test-key - University of Toronto...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online