Variables
Dory believes that fish that eat food exposed to microwaves will become smarter and would be able to swim through the reef faster. She decides to perform an experiment by placing fish food in a microwave for 20 seconds. She has the fish swim through the reef and records the time it takes for each one to make it to the end. She feeds the special food to 10 fish and gives regular food to 10 others. After 1 week, she has the fish swim through the reef again and records the times for each.
What is the dependent variable?
-how fast the fish swim through the reef
information gathered through your senses
observation
The independent variable goes on which axis?
x axis
What is the first thing you should do when there is an spill or something breaks?
Report to the teacher
Flat-bottomed cylindrical container, usually with a pouring lip, to measure, mix, and prepare liquids.
Beaker
Dory believes that fish that eat food exposed to microwaves will become smarter and would be able to swim through the reef faster. She decides to perform an experiment by placing fish food in a microwave for 20 seconds. She has the fish swim through the reef and records the time it takes for each one to make it to the end. She feeds the special food to 10 fish and gives regular food to 10 others. After 1 week, she has the fish swim through the reef again and records the times for each.
What is the independent variable?
eating food that is microwaved
Answer to your hypothesis based on data
Conclusion
The dependent variable goes on which axis?
Y axis
Name two lab safety rules
No eating or drinking in the lab
No running
Any bunsen burner rules
Follow teachers instructions
Hollow cylinder of thin glass with one end closed, used for experiments in labs.
Test tube
True or False. For an experiment to be controlled, there is only one independent variable.
True
What is a hypothesis?
A prediction of the results of the experiment
Which graph displays discrete data in separate categories?
Column Graph
Describe why the fans should be off if we are using bunsen burners
A glass bottle, having a rounded body and a narrow neck, used for mixing chemicals with fumes.
Round bottom flask
You want to see if eating snacks while completing math problems helps people finish them more quickly. You separate Middle School students into two groups and only give snacks to one of the groups. You then assign them 20 math problems to complete and time how long it takes them.
What is the dependent variable?
What is the step of the scientific method that describes how to conduct an investigation?
Method or Procedure
Most common type of graph in science which shows how one variable changes in response to another variable
Line Graph
How should you observe smells safely in the lab?
Waft
A tall rod used to connect clamps and suspend something at a height
Retort stand
You want to see if eating snacks while completing math problems helps people finish them more quickly. You separate Middle School students into two groups and only give snacks to one of the groups. You then assign them 20 math problems to complete and time how long it takes them.
What is the independent variable?
getting snacks
You want to see if eating snacks while completing math problems helps people finish them more quickly. You separate Middle School students into two groups and only give snacks to one of the groups. You then assign them 20 math problems to complete and time how long it takes them.
What is a controlled variable?
same math problems given
line graph
What is wrong in this scenario? Nemo and Sheldon flipped through the book and decided to test the properties of a mystery substance. Since the teacher did not tell them to wear the safety goggles, they left them on the table. Nemo lit the Bunsen burner, then reached across the flame to get a test tube from Sheldon.
Safety glasses not worn, reaching across bunsen burner.
A graduated plastic tube used in a laboratory for measuring and transferring small quantities of liquids from one container to another
Pipette