1.3 Study Guide Flashcards
(9 cards)
What is the first step of a hypothesis?
Come up with a specific reason to explain the phenomena.
What is step 2 of writing a hypothesis? What part has to be specific?
Step 2 is writing a testable statement, and how you can measure the variable had to be specific.
Write a hypothesis about what will happen to plants based on how much sunlight they get.
The growth of the plants depends on how much sunlight it gets. If a plant has a lot of sunlight or is sitting in a spot hit by the sun more then it will grow to be bigger and stronger. This can be measured by whether the place it is in is getting direct sunlight or not.
What do error bars measure?
They measure whether two groups are really significantly different.
How can you tell if two groups are significantly different?
If the error bars overlap they are not significantly different but if they do not overlap then they are.
How many control groups are there in a controlled experiment?
One
What is the purpose of the control group?
To give the other data sets in the experiment something to compare to.
How are experimental groups different in a controlled experiment?
They have different independent variables.
How many experimental groups can there be in a controlled experiment?
There has to be at least 1 but there is no set number of groups.
