Variables
Dependent variable is A.K.A. what?
What is Outcome variable
First step of the scientific method.
What is asking a question?
2 types of observations
Qualitative
Quantitative
Look at this chart...What is a reasonable hypothesis?
IF we increase the sugar %
THEN the number of plant growth will decrease
For the results of an investigation to be accepted, what must happen?
The results must be verified/repeated by others
The test variable is more commonly called this.
What is an independent variable
What step is missing from the scientific method?
1. Question
2._______
3.Hypothesis
4. Experiment
5.Collect and analyze DATA
6. Conclusions
7.Share results
Definition:
A reasonable conclusion based on previous knowledge and observations
Inference
Look at this climate graph. What are the independent and dependent variables?
I-Months
D-Temperature
Henry researches an experiment on the Internet, writes down the steps, and performs the exact same experiment. This is known as
Replication
You can only change one of these. If you change more than one, the experiment will not work.
What is the Independent/Test variable
Joey and Shane are in the same science class. They performed the same experiment on motion using the same procedure, but they got very different results. How can they find out who did it right?
review their procedures to make sure they tested the same variable
review their notes to see if they did anything differently from each other
repeat the experiment
"The lizard is green and has shiny scales" is an example of this type of observation.
What is QUALITATIVE?
Look at the muffin graph.
Name the independent/Dependent Variables
I-Days
D-# sold
Troy tests how high golf balls will bounce by holding six balls at a height of 22 cm above the ground and bounces each ball 5 times. Troy used what here?
Repetition
The thing(s) that we do nothing to is called this.
Control variable/control group
or Constant (variable we don't change)
Rosa wondered why the moss on the sunny side of the school grew more than on the shady side of the school. She researched how plants respond to different levels of light and then set up her own experiment to test how moss would grow in the shade vs the sun. She recorded her data for two months. What is the next step in the scientific process?
Analyze the data
Pete was cutting wood for a treehouse when he observed that he had 7 inches of cedarwood left over. This is what type of observation?
QUANTITATIVE
Look at this density graph.
This is an example of what observation?
Quantitative
Look at this picture of the ramp. Can I do an experiment if I change the height of the ramp and roll different balls down to see which one will go the furthest?
No
I'm planting three plants. I will plant one 4 inches down like I normally do. I plant another one 6 inches down and I plant the last one 2 inches down. I want to measure the plant growth to see which depth is better. Name the independent/Dependent Variables
I-Depth
D-Growth
What do I do if my hypothesis turns out to be false?
Try another hypothesis
This leads to the other.(Which one comes first?)
Observation leads to inference
Look at this flu graph.
When is flu season according to the x-axis?
June-October
When are you taking the science CFE?
Answer varies by period