Control Group
A student wanted to test how the mass of a paper airplane affected the distance it would fly. Paperclips were added before each test flight. As each paper clip was added, the plane was tested to determine how far it would fly. What is the control group?
What is the plane with 0 paperclips
Name one controlled variable from the rotor motor lab
What is the drop height?
An educated guess based on your observations.
What is a hypothesis/inference?
The man was angry
What is inference
Two groups of students were tested to see if they would be able to complete math problems faster with a calculator. Each group was given the same problems. One group used calculators and one group didn't. What is the control group?
What is the group without calculators
The variable you change on purpose to see if results are affected
What is independent variable
What was the independent variable (what we could change)
What is the Rotor Motor Design?
You use your senses in order to do this to help you understand the world.
What is make observations?
What is observation
The owner of a flower shop decided to change the plant food to a cheaper option to save money. He wanted to see if the flowers would still grow as tall. He gave one group of flowers the old food and another group the new, cheaper food. What is the control group?
What is the group that got the old food
An untested or normal group that is used for comparison
What is the control
What was the dependent variable (what we were measuring)
What is the drop time?
Jesse was testing which plants grows fastest so he planted a bean seed, a pumpkin seed, and corn seed, he put them in three different locations and "watered" one with milk, one with water, and one with soda.
What is too many variables, you should only test one at a time!!
It smelled like rotten eggs
What is an observation
You want to test if insect repellent will actually keep away mosquitoes. Identify both the control group and the experimental group
What are the control group is the group without insect repellant and the experimental group is the group with insect repellant
A list of factors kept the same in order to keep the experiment fair.
What is constants/ controlled variables
What was the testable question in our lab?
What is how is the drop time affected if we change this about our rotor motor design?
Used as a claim in a CER
What is an inference
A student wondered if adding more salt to water would make an egg float higher? What is the control group?
What is regular (tap) water without added salt
A comprehensive, evidence-based explanation of a natural phenomenon, developed through the scientific method and supported by extensive, repeated testing and observation
What is a scientific theory?
What type of data did we collect and what units did we use?
What is quantitative and we measured drop time in seconds?
The format you need to use when you write a hypothesis.
What is "If..(I do this)...then (my prediction)...because.... (reasoning on why I think this will happen)..."
Used as evidence to support a claim
What is observations