Let's Get Experimental
What is an observation?
Using the following experiment: How does the amount of sunlight affect how much a tree grows?
Amount of sunlight
What is the independent variable?
What is reflection?
What the student sees when the light is shining in the student's room
A reasonable guess using prior knowledge or experience
Observations using specific measurements and numbers (ex- The plant is 7 cm tall)
What is Quantitative Data?
Using the following experiment: How does amount of sleep affect student grades?
Student grades
What is the dependent variable?
When light goes through an object.
What is transmission?
What the teacher sees when the light is shining in the student's room
What is the student?
What is a model?
Observations that describe qualities using adjectives (ex- the plant's stem is tall and green)
What is qualitative data?
A variable that remains the same in an experiment to make sure only one factor is tested at a time.
What is a control variable?
When light bends and changes direction
What is refraction?
What is a thick metal layer and coat of paint?
A question that could be answered with an experiment
What is a testable question?
The part of the experiment that you change, or the "cause"
What is an independent variable?
How many variables you should change at one time
What is one variable?
The quality of being see-through
What is transparency?
The reason why glass is often a little reflective
What are impurities?
The way that light travels
What is a straight line?
The part of the experiment you measure or observe
What is the dependent variable?
Using the following experiment: How does the type of laundry detergent affect how clean the laundry is?
Amount of water
What is a control variable?
Not letting any light pass through
What is opaque?
The conditions for the one-way mirror that work best
What is a large difference in light between rooms?
What is added to glass to turn it into a one-way mirror
What is a half-silvered layer?