Temperature, Salinity, and Density
Presentation
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Science
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6th Grade
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Practice Problem
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Easy
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Standards-aligned
Melissa Nelson
Used 92+ times
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25 Slides • 13 Questions
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Temperature, Salinity, and Density
3.d: plan and carry out an investigation to examine the chemical and physical properties (salinity, density, temperature, pressure) of ocean water
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Open Ended
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Activator
Temperature: the degree of hotness or coldness of an object
Salinity: the dissolved salt content of a body of water
Density: the amount of mass in a given space
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The diagram to the right illustrates an object that
has a lot of density.
How do you think temperature affects density?
What about salinity?
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Look at the diagram.
What does it illustrate?
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Everything is made up of Matter.
Matter can be broken down into smaller particles such as atoms and molecules.
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What is Density?
Density is the amount of matter (mass) in a given space (volume)
For example, a golf ball and a table-tennis ball have similar volumes. But a golf ball has more mass than a table-tennis ball does. So, the golf ball has a greater density.
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Multiple Choice
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Density of Liquids
*Like all substances, liquids have different densities
*It is easy to see the differences in the density of liquids because more dense liquids will sink and less dense liquids will rise. The same is true for objects in liquids.
*If you pour together liquids that don’t mix and have different densities, they will form liquid layers.
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Multiple Choice
*Check out this picture. Which layer has the highest density?
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Multiple Choice
*Check out this picture. Which layer has the lowest density?
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Multiple Choice
*Imagine that the liquids have the following densities:
10g/cm3
3g/cm3
6g/cm3
5g/cm3
Which Density belongs with the BLUE layer?
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Multiple Choice
*Imagine that the liquids have the following densities:
10g/cm3
3g/cm3
6g/cm3
5g/cm3
Which Density belongs with the YELLOW layer?
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Multiple Choice
*Imagine that the liquids have the following densities:
10g/cm3
3g/cm3
6g/cm3
5g/cm3
Which Density belongs with the RED layer?
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Multiple Choice
*Imagine that the liquids have the following densities:
10g/cm3
3g/cm3
6g/cm3
5g/cm3
Which Density belongs with the GREEN layer?
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Multiple Choice
Which liquid has the highest density?
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Multiple Choice
Which liquid has the lowest density?
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Multiple Choice
Which liquid has the middle density?
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What is temperature?
Temperature is
the degree of hotness or coldness of an object.
For this lesson,
we are going to look at temperature more closely.
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When an object or substance is warmer, its particles move faster and get further apart
(Tip for remembering: they are warmer and want to get cooler by moving away from one another)
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When an object or substance is cooler, its particles move slower and are closer together
(Tip for remembering: they are cold and want to get warm by getting closer together)
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Relationship between Temperature & Density
As temperature increases, density decreases.
This is called an INDIRECT relationship.
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Relationship between Salinity & Density
What is Salinity?
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What is Salinity?
*Salinity is the dissolved salt content of a body of water
*Look at the diagram to the right showing the varying degrees of salinity in water
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Multiple Choice
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Salinity
Number 3 has the highest Salinity because it has more salt particles than water particles per unit.
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Look at the graph to the right.
What does it tell us about the Salinity and the depth of the ocean?
Salinity increases as ocean depth increases.
What happens to temperature as ocean depth increases? Why?
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Open Ended
Temperature, Salinity, and Density
3.d: plan and carry out an investigation to examine the chemical and physical properties (salinity, density, temperature, pressure) of ocean water
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