Cause Of the Strange Thermal Properties of Water

Cause Of the Strange Thermal Properties of Water

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Cause Of the Strange Thermal Properties of Water

What is the cause of the strange thermal properties of water?

Group of answer choices the covalent bonds making up the water molecule which bind the atoms together very strongly

the molecule is very polar and so has multiple strong hydrogen bonds that hold the molecules together very strongly

the fact that there are is a huge amount of it on Earth and that it is gathered into the oceans

Flag this Question Question 21 pts

I add 3000 Joules to 1 kg of a liquid and it warms up by 6 oC. What is the specific heat of the liquid?

Group of answer choices 200 J/kg oC

500 J/kg oC

2000 J/kg oC

18000 J/kg oC

Flag this QuestionQuestion 31 pts

Which of the following water properties is responsible for causing the sea breezes that keep Irvine cooler during the hot summer months?

Group of answer choices powerful solvent

high surface tension and cohension

high specific heat and heat capacity

high latent heat of vaporization

Flag this Question Question 41 pts

How does the latent heat of vaporization of water help us regulate our body temperatures when we sweat?

Group of answer choices Because energy (heat) is added to our skin by the water molecules in our sweat as they evaporate

Because energy (heat) is removed from our skin by the water molecules in our sweat as they evaporate

Because energy (heat) is removed from our skin by the water molecules in our sweat as they condense

Flag this Question Question 51 pts

The two graphs below show the density of freshwater (on the left) and the density of seawater (on the right) vs temperature. Use the graphs to help you select the TRUE statement below.

Group of answer choices

Unlike freshwater which is most dense at 4 oC, the density of seawater continues to increase until it reaches its freezing point.

Seawater is less dense than freshwater at all temperatures.

Freshwater density is more sensitive to changes in temperature than seawater density (i.e. freshwater density changes more dramatically as temperature increases).

Flag this QuestionQuestion 61 pts

The salinity in the Dead Sea is 342 ‰ – it is so high that nothing but bacteria can live in it. What mass of salt would remain if I evaporate 2kg of seawater from there?

Group of answer choices 17.1g

68.4g

171g

684g

Flag this QuestionQuestion 71 pts

Ocean salinity is made up of 6 major elements but many other “trace elements”. Examine the table to work out which of the elements listed below has the lowest concentration in seawater.

Group of answer choices iodine

phosphorus

oxygen

sodium

Flag this QuestionQuestion 81 pts

What causes salinity to be higher in the tropics than at the pole?

Group of answer choices greater melting of ice near the tropics

formation of sea ice near the tropics

higher rainfall rates near the tropics

greater evaporation rates near the tropics

Flag this QuestionQuestion 91 pts

Which of the following would increase salinity by increasing the amount of dissolved material in the ocean?

Group of answer choices evaporation

a large volcanic eruption

sea spray

formation of shells by life in ocean

Flag this QuestionQuestion 101 pts

We will discuss desalination as a source of freshwater in more detail next week. Do some quick research online to work out which of the following statements about desalination is FALSE?

Group of answer choices Desalination takes a huge amount of energy so can worsen climate change if that energy is generated with fossil fuels.

Desalination poses no risk to marine life along the coast.

Desalination will not help inland states such as Nevada!

Desalination can provide California with more freshwater but it will be much more expensive than our current water sources.

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Excellent Quality 95-100%	Introduction 45-41 points The background and significance of the problem and a clear statement of the research purpose is provided. The search history is mentioned.		Literature Support 91-84  points The background and significance of the problem and a clear statement of the research purpose is provided. The search history is mentioned.			Methodology 58-53 points Content is well-organized with headings for each slide and bulleted lists to group related material as needed. Use of font, color, graphics, effects, etc. to enhance readability and presentation content is excellent. Length requirements of 10 slides/pages or less is met.
Average Score 50-85%	40-38 points More depth/detail for the background and significance is needed, or the research detail is not clear. No search history information is provided.		83-76  points Review of relevant theoretical literature is evident, but there is little integration of studies into concepts related to problem. Review is partially focused and organized. Supporting and opposing research are included. Summary of information presented is included. Conclusion may not contain a biblical integration.			52-49  points Content is somewhat organized, but no structure is apparent. The use of font, color, graphics, effects, etc. is occasionally detracting to the presentation content. Length requirements may not be met.
Poor Quality 0-45%	37-1 points The background and/or significance are missing. No search history information is provided.		75-1 points Review of relevant theoretical literature is evident, but there is no integration of studies into concepts related to problem. Review is partially focused and organized. Supporting and opposing research are not included in the summary of information presented. Conclusion does not contain a biblical integration.			48-1 points There is no clear or logical organizational structure. No logical sequence is apparent. The use of font, color, graphics, effects etc. is often detracting to the presentation content. Length requirements may not be met
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