Three Investigations Investigation 1 Which is denser fresh water or salt water Read the question carefully What is the independent variable What is the dependent variable What are some controlled variables ID: 260885
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Slide1
Ocean Density
Three InvestigationsSlide2
Investigation 1 –
Which is denser: fresh water or salt water?
Read the question carefully.
What is the independent variable?
What is the dependent variable?
What are some controlled variables?Slide3
Investigation 1 –
Which is denser: fresh water or salt water?
Write a hypothesis
If
the independent variable changes (how does it change?)
Then
the dependent variable changes (how does it change?) Slide4
Investigation 1 –
Which is denser: fresh water or salt water?
You have these materials to work with
Triple beam balance
Beaker
Plastic cup
Pipette
Graduated cylinder
Spoon
Salt Slide5
Investigation 1 –
Which is denser: fresh water or salt water?
Write a procedure
What do you need to do first?
What are you testing?
How are you testing it?
What are you measuring?
How are you measuring it?
How many times are you repeating the test?
What calculations do you need?Slide6
Investigation 1 –
Which is denser: fresh water or salt water?
Make a chart
What needs to be in your chart?
Where do you put the independent variable?
How do you show the number of trials?
How are you going to title the chart?Slide7
Investigation 1 –
Which is denser: fresh water or salt water?
Conduct your investigation
Collect your dataSlide8
Investigation 1 –
Which is denser: fresh water or salt water?
Make a graph
What are you going to put on the X-axis?
How will you label the X-axis?
What are you going to put on the Y-axis?
How will you label the Y-axis?
What kind of scale do you need?
What is an appropriate title for your graph?Slide9
Investigation 1 –
Which is denser: fresh water or salt water?
Write a conclusion
Answer the research question – which water was densest?
Do you accept or reject your hypothesis?
Why? Explain your data.
Where might errors have been made?Slide10
Investigation 2 –
How does the amount of salt in water affect density?
Read the question carefully.
What is the independent variable?
What is the dependent variable?
What are some controlled variables?Slide11
Investigation 2 –
How does the amount of salt in water affect density?
Write a hypothesis
If
the independent variable changes
Then
the dependent variable changesSlide12
You have these materials to work with
Triple beam balance
BeakerPlastic cup
Pipette
Graduated cylinder
Spoon
Salt
Investigation 2 –
How does the amount of salt in water affect density?Slide13
Write a procedure
What do you need to do first?
What are you testing?
How are you testing it?
What are you measuring?
How are you measuring it?
How many times are you repeating the test?
What calculations do you need?
Investigation 2 –
How does the amount of salt in water affect density?Slide14
Make a chart
What needs to be in your chart?
Investigation 2 –
How does the amount of salt in water affect density?Slide15
Conduct your investigation
Collect your data
Investigation 2 –
How does the amount of salt in water affect density?Slide16
Make a graph
What are you going to put on the X-axis?
What are you going to put on the Y-axis?
What kind of scale do you need?
What is an appropriate title for your graph?
Investigation 2 –
How does the amount of salt in water affect density?Slide17
Write a conclusion
Answer the research question
Explain your dataWhere might errors have been made?
Investigation 2 –
How does the amount of salt in water affect density?Slide18
Investigation 3 –
How does the temperature of saltwater affect density?
Read the question carefully.
What is the independent variable?
What is the dependent variable?
What are some controlled variables?Slide19
Write a hypothesis
If
the independent variable …...
Then
the dependent
variable changes……
Investigation 3 –
How does the temperature of saltwater affect density?Slide20
You have these materials to work with
Triple beam balance
BeakerPlastic cup
Pipette
Graduated cylinder
Spoon
Salt
Investigation 3 –
How does the temperature of saltwater affect density?Slide21
Write a procedure
What are you testing?
How are you testing it?
Investigation 3 –
How does the temperature of saltwater affect density?Slide22
Make a chart
What needs to be in your chart?
Investigation 3 –
How does the temperature of saltwater affect density?Slide23
Conduct your investigation
Collect your data
Investigation 3 –
How does the temperature of saltwater affect density?Slide24
Make a graph
Investigation 3 –
How does the temperature of saltwater affect density?Slide25
Write a conclusion
Investigation 3 –
How does the temperature of saltwater affect density?