Q2: If a 96.5g piece of aluminum has a density

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Presentation transcript:

Q2: If a 96.5g piece of aluminum has a density of 2.7 g/cm3, what is its volume? 2. If the density of a diamond is 3.5 g/cm3, what would be the mass of a diamond whose volume is .5 cm3?

Vocabulary Quiz Tomorrow

Today’s Objective: I understand how salinity affects water.

Would either the diamond or aluminum float on water? Why? The average density of water is 1 g/ml or 1 g/cm3. Would either the diamond or aluminum float on water? Why?

Which is more dense, rock or wood? How do you know?

Which is most dense?

Solid water (ice) can melt if heat is added. Sublimation is the change of ice directly to a gas (without becoming a liquid first.

Focus Questions: How is H2O different from other substances? How does adding salt change the qualities of ice? What happens to H2O when water freezes? Why do ice cubes float? What makes ice “fast” or “slow”? How do NHL ice technicians use math and science?

Just how is density used in real life? Seems lame...

Focus Questions: How is H2O different from other substances? How does adding salt change the qualities of ice? What happens to H2O when water freezes? Why do ice cubes float? What makes ice “fast” or “slow”? How do NHL ice technicians use math and science?

Beaker

Flask

Stirring Rod

Do NOT use extra salt. Do not get salt wet *Do NOT use extra salt. *Do not get salt wet. *It must be used for other labs.

An “egg”stra special lab

Clean up *Dump all used water down the sink. *Rinse all glassware and dry it as much as possible. *Turn it on its side in the tub to dry *Put everything back in your tub. *Return to seat to complete conclusion

Salinity affects the atmosphere too?

1. Name things salinity affects: Climate Weather Sea life Whole ocean system Temperature Density

2. How does the temperature of the water affect the climate? Warm water heats the air; cold water cools the air Warm air near the tropics moves into cooler areas taking the heat with it Makes some northern areas warmer

3. Do all oceans have the same amount of salt in them? No, the North Atlantic has the most salt Temperature changes the density so there is more salt because it is a colder ocean.

It takes 1,000 years for the H2O to complete one cycle 6. What about the ocean currents makes it so difficult to predict climate changes? It takes 1,000 years for the H2O to complete one cycle H2O moves slower than the air in the atmosphere Changes occurring now won’t show up for 100’s of years