Outline Experiments
One thing you should always state
(Ex. Containers)
(Ex. 5 Containers)
What is the most important thing to remember while graphing.
USE MORE THAN HALF OF THE GRAPH
On a graph what requires you to use slope formula?
Calculating the rate of mean change (rate of increase or decrease)
What to do if it says "laboratory based"
plan a NEW experiment
How many steps are there in designing an experiment for full points.
8
What are Controls in an experiment and how many should you at least have?
light, temp, salinity, amount of water, how often results are calculated, amount of exposure, etc. You should have at least 3.
What should you do to label graphs correctly.
Label X & Y axis properly with units and correct intervals (don't have to start at 0)
What is the slope formula?
Y2-Y1
--------
X2-X1
What should you add when you have collectable data?
state when and how often it was collected
What if the first step in designing an experiment
creating a hypothesis
What should you state and calculate from all trials?
State repeated experiment and calculate mean/average.
To answer questions about graphing:
what information should you state about the relationship between graphs
temperature increases, ocean acidity decreases etc
Is % Part %
= or =
Of 100 Whole 100
What do you have to do when you have controlling variables
Be specific and state them
Ex. amount of water , PH, salinity
example question : What are variables you could use to test the hypothesis that the rate of photosynthesis of an aquatic plant increases as light intensity increases.
a. light intensity is key
b. control variables ; temperature wavelength of light
c. design the experiment to eliminate effect of control variable
What is the amount of independent variable used?
Pick a quantity suitable for the experiment.
What is one helpful thing for graphing.
making a key or labeling lines
% increase= New Value - Initial Value x 100
Initial Value
% decrease= New Value - New Value x 100
Initial Value
increase ---> New Value - Initial Value
decrease ---> Initial Value - New value
when dealing with independent variable
state how much the will be used
ex. 20cm2 of seagrass or 500 cucumbers
how many control variables should you state
at least 2 example ones
temperature, salinity, ph
What is 1 thing you should state as a result.
State the most and least reference to data.
Why should you read directions carefully when connecting points.
To see if its a line of best fit , strait ruled etc
Given 2 points formula
What should you always state at the end
that you will always repeat or replicate the experiment.
What is a hypothesis
proposed explanation for an observed phenomenon