Observations + Inferences
**DOUBLE JEOPARDY**
The boy has a scar on his head. He must be Harry Potter
Observation: the boy has a scar on his head
Inference: He must be Harry Potter
A person’s paycheck depends on the amount of time worked
IV: the amount of time worked
DV: paycheck
Will an energy drink impact the speed a plant grows?
Question
The “doing” part where you test your independent variable. You collect data during this step.
Experiment
Something that cannot be argued against. Can be observed using the five senses
Observation
I smell delicious smells coming from the kitchen. It must be dinner time.
Observation: I smell delicious smells coming from the kitchen.
Inference: It must be dinner time.
**DOUBLE JEOPARDY**
The temperature of an oven affects the speed a pizza will bake.
IV: temperature
DV: speed a pizza will bake
If I increase the concentration of Special Energy drink, then the plant will grow faster because the drink has a special growth enhancing chemical.
Hypothesis
Information, measurements, and materials gathered from observations that are used to help answer questions
Data
The variable that is changed by a scientist in an experiment.
Independent Variable
Ms. Coleman realized her coffee was hot when she saw the steam rising from her cup
Observation: seeing the steam
Inference: coffee must be hot
The number of coaches hired depends on the number of students signed up for Cross Country.
IV: number of coaches hired
DV: number of students signed up for cross country
Gather materials.
Place soil in each pot.
Add one seed to each pot.
Place pots in the window.
Water each plant with the same amount of water.
ETC…
Measure and check results.
Experiment
An educated guess based on research. If __________, then _________ because _______.
Hypothesis
The variable that is unchanged and constant
Control Variable
The scientist looked around at the beautiful colors on the trees. She turned to the other scientist and told him, "fall is here".
Observation: the leaves changing color
Inference: fall is here
The time that Mr. Willis gets to go home depends on the number of quizzes he has to grade.
IV: number of quizzes
DV: the time Mr. Willis gets to go home
Pot 1 Pot 2 Pot 3
week 1 3 cm 3 cm 3 cm
week 2 10 cm 8 cm 3 cm
week 3 15 cm 10 cm 8 cm
Analysis
The variable that is measured by a scientist in an experiment
Dependent Variable
A logical conclusion based on previous experiences, observations and knowledge
Inference
"You're impossibly fast, and strong. Your skin is pale white and ice cold. Your eyes change color, and sometimes you speak like--like you're from a different time. You never eat or drink anything. You don't go out in the sunlight. I know what you are.
Vampire."
Observation: "You're impossibly fast, and strong. Your skin is pale white and ice cold. Your eyes change color, and sometimes you speak like--like you're from a different time. You never eat or drink anything. You don't go out in the sunlight."
Inference: he is a vampire
The kind of food a bird eats affects the color of its feathers
IV: kind of food
DV: feather color
The hypothesis was supported or not/supported by the data. The results are due to _______.
One problem with the experiment was_______
This may have affected the results because ___________.
Conclusion
Looking at your data and creating charts and graphs. Use this part to come to a conclusion.
Analysis
Making a decision about what you learned. You decided whether or not you made the correct hypothesis
Conclusion