Variables
Scientific Method
Observations
Name that variable!
Test your Knowledge!
100
The is what stays the same in an experiment
Constants or controls
100
The first step of the scientific method
Ask a question and make observations
100
What type of observation? The clouds are dark
Qualitative
100
Mrs. Dalton notices that when she leaves apples in the refrigerator, they stay fresher for longer. She wants to test this hypothesis. She purchases 4 apples, places 2 in the refrigerator, and leaves 2 on the counter. She makes observations every 2 days.
What's the IV?
location of the apples
100
A student predicted that all objects with a mass greater than 9 grams (g) will sink in water. After finding the masses of four objects, the student placed each object in a pan of water to determine if it would sink or float.
What's the IV?
mass of the object
200
This is what is being changed in the experiment
Independent variable
200
an educated guess based on research
hypothesis
200
What type of observation? I ate 35 cookies
Quantitative
200
Mrs. Dalton notices that when she leaves apples in the refrigerator, they stay fresher for longer. She wants to test this hypothesis. She purchases 4 apples, places 2 in the refrigerator, and leaves 2 on the counter. She makes observations every 2 days.
What's the DV?
freshness of the apples (how long they stay fresh for)
200
A student predicted that all objects with a mass greater than 9 grams (g) will sink in water. After finding the masses of four objects, the student placed each object in a pan of water to determine if it would sink or float.
What's the DV?
Sinking or floating
300
This is what is being measured in the experiment
dependent variable
300
the correct format for a hypothesis
If, then, because
300
What type of observation? The floor is 6 ft long
Quantitative
300
Mrs. Dalton notices that when she leaves apples in the refrigerator, they stay fresher for longer. She wants to test this hypothesis. She purchases 4 apples, places 2 in the refrigerator, and leaves 2 on the counter. She makes observations every 2 days.
What could a constant be?
type of apples, etc.
300
A student predicted that all objects with a mass greater than 9 grams (g) will sink in water.
What proves their prediction was incorrect?
wooden block (16g) floated
400
factors in an experiment
variables
400
what is the information that we gather during an experiment that can be displayed on tables or graphs?
Data
400
What type of observation? The banana is rotten
Qualitative
400
A student predicted that adding vinegar to plants will help them grow taller. They will add vinegar to two plants, and leave 2 plants without vinegar. After a month, they will measure the height of the plants.
What's the DV?
height of the plants
400
In our ball and ramp experiment, what was the IV?
the height of the ramp
500
How many independent variables can we have in an experiment?
1
500
What is the final step of the scientific method?
communicate your results/ conclusion
500
What type of observation? The area of the garden is 250 ft squared
Quantitative
500
A student predicted that adding vinegar to plants will help them grow taller. They will add vinegar to two plants, and leave 2 plants without vinegar. After a month, they will measure the height of the plants.
What's the IV?
adding vinegar
500
In our ball and ramp experiment, what type of energy does the golf ball have when placed at the top of the ramp (before rolling down)?
potential energy