• Share
  • Email
  • Embed
  • Like
  • Save
  • Private Content
Variables
 

Variables

on

  • 3,479 views

 

Statistics

Views

Total Views
3,479
Views on SlideShare
3,436
Embed Views
43

Actions

Likes
2
Downloads
37
Comments
0

4 Embeds 43

http://mrgrasso.wordpress.com 36
http://www.edmodo.com 5
http://www.slideshare.net 1
http://chesterfield.edmodo.com 1

Accessibility

Categories

Upload Details

Uploaded via as Microsoft PowerPoint

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Processing…
Post Comment
Edit your comment

    Variables Variables Presentation Transcript

    • Review
      Warmup.
      What is a variable?
      What is made during photosynthesis?
      Where is there more oxygen, a lot of photosynthesis or a little.
    • A variable is any factor of an experiment that can be changed.
      What Kind of plant
      Water
      Bags
      Light
      Amount of Co2
      Variable
    • Three types of variables
      Control- What stays the same
      Manipulated_What you change before the experiment.
      Responding_The variable that is observed or measured.
    • What batter is the best?
      Put them in flashlights
      Turn on the flashlights
      Record how long each
      Flashlight stays on.
      Battery experiment
    • Battery Experiment
      Manipulated Variable
      Batteries
      Responding Variable (dependent variable)
      Length light stays on.
      Control variable
      Same flashlight
      Same time started
      Same temperature
    • Experiment 2
      What kind of coffee cup keeps coffee warmest.
      Look for
      Manipulated variable
      Control variables
      Responding variable
    • experiment
    • Manipulated Variables
      What was the manipulated variable?
      These are the variables you set up. What is different in the experiment
    • Responding variables
      What was the responding variable.
      The responding variable is what you observe.
      We observed the change in
      Temperature
    • Control variable
      What parts of the experiment were kept the same.
      Always use the same measuring
      devices.
      Same thermometer
      Same amount of water
      Same beginning temperature.
    • Amount of variables
      How many manipulated variables can we have?
      How come we can only have one?
      What happens if we had different batteries AND different flashlights, AND different temperatures they were tested in?
      Do we know which battery is truly better?
      Could have better flashlight
      Temperatures can make batteries last longer.
      YOU CAN ONLY HAVE ONE MANIPULATED VARIABLE AT A TIME.
      This is so you know what exactly is causing the dependent variable.
    • Elodea experiment.
    • You will do three experiments.
      For each experiment give:
          Hypothesis: What do you expect will give you the most photosynthesis?
          Manipulated Variable: Which Variable are you testing
          Control Variable: What variables are you keeping the
      same?
          Responding Variable: Bubbles
       
      Data table, 
      Do 4 tests with 4 different variables and record your data. 
      Conclusion
      How does this variable affect photosynthesis?, 
    • Elodea experiment.
    • Predictions? Hypothesis
      What color will work best?
      PlainRed Green Blue,
      What will happen when we increase CO2
      What will happen when we increase the light level?
    • Our Lab
      You will record Data Table.
      Change only one variable at a time. You then know this effect on the photosynthesis.
      You will do 4 runs for each variable.
      Test the effect of Light Level
      Test the effect of light color
      Test the effect of carbon dioxide
    • Results
      Chart your data.
      List the level of all the variables and the result