Lab safety
Students must always have a _____ with them while working in the science lab
Lily is trying to determine if watering her plants more will help them grow faster. What is the control variable?
Amount of soil, amount of sunlight, etc.
What is a controlled variable?
A variable that is held constant in a study.
*Controlled variable= what does not change
Is it ok to eat, drink, or chew gum during a science lab?
No
Bob wants to see if waking up earlier in the morning will help him feel less tired during the day. What is the dependent variable?
Level of tiredness
What is an independant variable?
The variable that you manipulate in an experiment and is not affected by other variables
*Independent variable= what I am changing
Are students allowed to wear contact lenses in the laboratory?
No
Abagail wants to see if going for a walk everyday improves her mood. What is the independent variable?
Frequency of walks
What is data?
Information/observations collected during an experiment
True or false: students are allowed to remove chemicals and other materials from the lab
False
Joey wants to see if adding more sugar to his coffee will make him drink it faster. What are the independent and dependent variables?
Independent: the amount of sugar
Dependent: how quickly he drinks his coffee
What is a dependent variable?
A variable that is dependent in the independent variable
*Dependent variable= data collected
What should you do if you do not know how to use a piece of equipment in a science lab?
Ask for help!
Leonard wants to see if waking up earlier will help him fall asleep faster at night. What are the independent, dependent, and constant variables?
Independent: time that he wakes up in the morning
Dependent: how quickly he falls asleep at night
Constant: bed that he sleeps in, nighttime routine, etc.
What would we call an educated guess about something that is going to happen in a scientific experiment?
Hypothesis