Scientific Questions
The three key words in a scientific question are
How, does, affect
The dependent variable has to be something you can...
measure
The three key words in a hypothesis are
If, then, because
This is what you should do with your long hair when entering a lab.
Tie it Back
Is this a scientific question?
How does the amount of sugar affect how long children stay awake on Halloween?
yes
Control variables are things in an experiment that...
stay the same
Is this a good hypothesis?
I think there will be more snow in December because I want snow for winter break.
no
The people responsible for cleaning up lab equipment.
The students
Is this a scientific question?
Why does the amount of sugar cause children to stay awake longer on Halloween?
no
This variable is what the experimenter changes on purpose, or tests.
Is this a good hypothesis?
If it is consistently below 35oF in December, then there will be snow during winter break because it needs to be closer to freezing for it to snow.
yes
This person is the most important part of lab safety
The student
Which variables belong where?
How does _________ affect ________?
How does [IV] affect [DV] ?
What is the dependent variable?
How does car color affect how frequently people get pulled over?
how frequently people get pulled over
Which variables belong in the blanks?
If _____ then _____.
If [IV] then [DV] .
This is the first step in the procedure for broken glass.
Tell the teacher
Say the scientific question...
IV: temperature of hot tub
DV: time spent in the hot tub
How does the temperature of the hot tub affect the time spent in the hot tub?
What is the independent variable?
How does player age affect accuracy at ping pong?
player age
In a hypothesis, a connection to an observation or scientific reasoning should follow after the word...
because
What are the metric base units?
m L g
The location where you wash off chemical spills on your body or clothes.
Safety shower