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T1 w7.clz14.marine life at risk from noisier oceans

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T1 w7.clz14.marine life at risk from noisier oceans T1 w7.clz14.marine life at risk from noisier oceans Document Transcript

  • CLOZE 2010 Secondary 4 NA R Name: _______________________ No: ____ Date: ________ Class: __________ T1W7.2010 Main Instructions: 1. Fill in each blank with a suitable word. 2. Write each answer in the space provided in the passage. Important information: 1. Spelling errors. You receive a ½ mark if the word is a correct fit, but wrongly spelt, e.g. “missery” for “misery” or “sufficent” for “sufficiently”. You receive 0 if the spelling is so bad that the word is unrecognizable by the marker. The marker’s decision is final. 2. Grammatical errors. You receive O if the grammatical form is incorrect, e.g. “construct” for “constructed” or “suppose” for “supposing”. T1W7.2010 CLOZE 14 Factual Recount: Marine Life At Risk From Noisier Oceans The world’s oceans are becoming noisier because of pollution and this may have potentially harmful effects on whales, dolphins and other marine life. Low- frequency sound in the ocean is produced by natural phenomena such as rain, waves and marine life, and by human activities as sonar systems, shipping and construction. The sound is absorbed mainly through the viscosity of the water and the presence of certain dissolved chemicals. However, the concentration of chemicals that absorb sound in the oceans has declined as a result of ocean acidification, which is caused by rising concentrations of carbon dioxide. Rising carbon dioxide levels come from human activities such as shipping, with the number of ships roughly doubling over the past forty years. This in turn increases the acidity of the ocean, shown by a lowering of its pH levels, the scientists said. Using model simulations, they found that increases in acidity could reduce seawater sound absorption by as much as sixty per cent by 2100 in high-latitude oceans. Concern about the negative effect of the sea’s increased acidity had previously been concentrated on the reduced rate of calcification, such as in coral reefs. “A less anticipated consequence of ocean acidification is its effect on underwater sound absorption,” the US report said. “A decrease in seawater pH lowers sound absorption in the low-frequency range and, as a result, leads to increasing sound transmission.” High levels of low-frequency sound have behavioural and biological effects on marine life, the report added. This includes tissue damage, mass stranding of whales and temporary loss of hearing in dolphins associated with military tests using intense mid-frequency sonar. 1 4 7 10 13 2 5 8 11 14 3 6 9 12 15
  • CLOZE 2010 Secondary 4 NA R Name: _______________________ No: ____ Date: ________ Class: __________ KEY Main Instructions: 3. Fill in each blank with a suitable word. 4. Write each answer in the space provided in the passage. Important information: 2. Spelling errors. You receive a ½ mark if the word is a correct fit, but wrongly spelt, e.g. “missery” for “misery” or “sufficent” for “sufficiently”. You receive 0 if the spelling is so bad that the word is unrecognizable by the marker. The marker’s decision is final. 2. Grammatical errors. You receive O if the grammatical form is incorrect, e.g. “construct” for “constructed” or “suppose” for “supposing”. T1W7.2010 CLOZE 14 Factual Recount: Marine Life At Risk From Noisier Oceans The world’s oceans are becoming noisier [1] because of pollution and this may have potentially harmful [2] effects on whales, dolphins and [3] other marine life. Low-frequency sound in the ocean is produced by natural phenomena [4] such as rain, waves and marine life, and by human activities as sonar systems, shipping and construction. The sound is absorbed mainly through the viscosity of the water and the presence of certain dissolved chemicals. However, the concentration of chemicals that absorb sound in the oceans has declined as a [5] result of ocean acidification, which is [6] caused by rising concentrations of carbon dioxide. Rising carbon dioxide levels come from human activities such as shipping, with the [7] number of ships roughly doubling over the past forty years. This [8] in turn increases the acidity of the ocean, shown [9] by a lowering of its pH levels, the scientists said. Using model simulations, they found that increases in acidity could reduce seawater sound absorption by [10] as much as sixty per [11] cent by 2100 in high-latitude oceans. Concern about the negative effect of the sea’s increased acidity had previously [12] been concentrated on the reduced rate of calcification, such as in coral reefs. “A less anticipated consequence of ocean acidification is its effect [13] on underwater sound absorption,” the US report said. “A decrease in seawater pH lowers sound absorption in the low-frequency range and, as a result, leads to increasing sound transmission.” High levels of low-frequency sound have behavioural and biological effects on marine life, the report [14] added. This includes tissue damage, mass stranding of whales and temporary loss of hearing in dolphins associated with military tests [15] using intense mid-frequency sonar. 1 4 7 10 13 2 5 8 11 14 3 6 9 12 15
  • CLOZE 2010 Secondary 4 NA R Name: _______________________ No: ____ Date: ________ Class: __________ T1W7.2010 Main Instructions: 5. Fill in each blank with a suitable word. 6. Write each answer in the space provided in the passage. Important information: 3. Spelling errors. You receive a ½ mark if the word is a correct fit, but wrongly spelt, e.g. “missery” for “misery” or “sufficent” for “sufficiently”. You receive 0 if the spelling is so bad that the word is unrecognizable by the marker. The marker’s decision is final. 2. Grammatical errors. You receive O if the grammatical form is incorrect, e.g. “construct” for “constructed” or “suppose” for “supposing”. In other words, T1W7.2010 CLOZE 14 Factual Recount: Marine Life At Risk From Noisier Oceans The world’s oceans are becoming noisier [---1---] of pollution and this may have potentially harmful [---2---] on whales, dolphins and [---3---] marine life. Low- frequency sound in the ocean is produced by natural phenomena [---4---] as rain, waves and marine life, and by human activities as sonar systems, shipping and construction. The sound is absorbed mainly through the viscosity of the water and the presence of certain dissolved chemicals. However, the concentration of chemicals that absorb sound in the oceans has declined as a [---5---] of ocean acidification, which is [---6---] by rising concentrations of carbon dioxide. Rising carbon dioxide levels come from human activities such as shipping, with the [---7---] of ships roughly doubling over the past forty years. This [---8---] turn increases the acidity of the ocean, shown [---9---] a lowering of its pH levels, the scientists said. Using model simulations, they found that increases in acidity could reduce seawater sound absorption by [---10---] much as sixty per [---11---] by 2100 in high-latitude oceans. Concern about the negative effect of the sea’s increased acidity had previously [---12---] concentrated on the reduced rate of calcification, such as in coral reefs. “A less anticipated consequence of ocean acidification is its effect [---13---] underwater sound absorption,” the US report said. “A decrease in seawater pH lowers sound absorption in the low-frequency range and, as a result, leads to increasing sound transmission.” High levels of low-frequency sound have behavioural and biological effects on marine life, the report [---14---]. This includes tissue damage, mass stranding of whales and temporary loss of hearing in dolphins associated with military tests [---15---] intense mid-frequency sonar. 1 4 7 10 13 2 5 8 11 14 3 6 9 12 15 View slide
  • CLOZE 2010 Secondary 4 NA R View slide