GEOL 106 Lecture Notes - Asteroid Family, Ecological Footprint, Arsenic
Rearrange the jumbled-up sentences below into their proper order to form good paragraphs of:
Topic sentence, Supporting sentence, Concluding sentence Provide appropriate transitional words or phrases to make the paragraphs coherent. Based on your understanding of the paragraphs, supply appropriate titles to each of them.
a) Recentreportsindicatedthatthedifficultyhadbeensettled,atleastfora time. It was a surprise to read in the papers this morning that war had been declared and the actual fighting had begun. For years, there was a serious misunderstanding between the two countries.
b) When wisely engaged in, it builds up resistance to infections and tones up the whole system. A painful overdose of sunburn may develop into something really serious. Calcium in the bone structure may be depleted. Caution should be exercised when one is taking a sunbath, especially if he or she is not accustomed to it. Other dangers lurk in the blazing rays of the mid-summer sun. Sunbathing is recommended by physicians as an excellent way to improve one’s physical condition. Too much exposure may be injurious to health.
c) Fuel efficiency for popular vehicles...Research and development needs to be intensified to find renewable sources of energy like solar and wind power. To combat the problem of greenhouse gases, several fronts are being attacked simultaneously.
Grade 9 Science – Lab Safety & Equipment Woksheet
Part A: Highlight ‘T’ for TRUE OR ‘F’ for FALSE for each of the following questions. (K - 35)
1. T F Broken glassware should be swept up immediately and placed in the garbage bin.
2. T F Eyeglasses or contact lenses are an acceptable substitute for googles during an experiment.
3. T F If you arrive at class to find a spilled liquid on your desk, you should assume it is water and wipe
it up with paper towels.
4. T F Students with long hair must tie it back when using Bunsen burners.
5. T F If you take too much of the chemicals needed for an experiment, put it back into the container you
got it from.
6. T F Class B fires are those related to electrical equipment.
7. T F Discard all solid waste by rinsing it down the sink.
8. T F You may consume food and drinks during a lab, as long as it is kept at a safe distance from
9. T F If asked to detect the odour of a chemical in the lab, the student should inhale a deep breath of the
10. T F If your clothing were to catch on fire, your first step should be to STOP, DROP and ROLL.
11. T F When using a fire extinguisher, aim at the top of the fire. The chemical in the extinguisher will
fall and put out the flames.
12. T F When heating chemicals in a test tube, heat from the bottom up, aiming the test tube at the
ceiling, and keep the test tube still.
13. T F It is ok to take off my safety goggles if it’s just for a second while I write something down.
14. T F If any chemical makes contact with your eye, wash it immediately at the eyewash station for
fifteen minutes. If you should spill chemicals on your skin, place the affected area under water
15. T F Always read through each activity before you begin.
16. T F If you are unsure about any part of the procedure for an experiment, you should figure it out
yourself. Asking the teacher for clarification will result in a lower mark due to lack of preparation.
17. T F It is acceptable to sit during very long experiments.
18. T F It is ok if I don’t know where the lab safety equipment is since I can just ask someone later.
19. T F Be sure to tell your teacher about any accident, broken equipment, or injury that occurs during
class; no matter how minor.
20. T F When working with chemicals, keep pens and pencils away from your mouth.
21. T F In warmer months, it is acceptable to wear sandals during an experiment.
22. T F Determine whether your equipment is cool enough to disassemble by placing the back of your
hand near it.
23. T F Loose-fitting, long-sleeved shirts should be worn during experiments to protect your arms from
burns and chemical splashes.
24. T F If you must retrieve materials during a lab, it is acceptable to leave your Bunsen burner unattended
as long as it is set to a yellow flame.
25. T F To avoid an injury when heating materials, always place a stopper or tight-fitting lid on the
container being heated.
26. T F If a student uses the last of the chemicals in an experiment, it is their responsibility to go into the
storeroom to retrieve an additional quantity of that chemical.
27. T F Always leave your work area clean and dry before leaving the lab and make sure equipment and
glassware is returned clean to its proper place.
28. T F Horseplay is O.K. during a lab as long as no one is getting hurt.
29. T F It is never advisable to place a thermometer in an open flame.
30. T F To cool hot glassware, run cold water over it.
31. T F Class A fires can be extinguished with water.
32. T F Class D fires must be extinguished with water.
33. T F Keep equipment away from the edge of the lab bench.
34. T F If your eye itches while you are working with chemicals, you should rub it with your hands.
35. T F WHMIS stands for warning hazardous materials information symbols.