Controlled Experiments
The thing you change in an experiment in order to see the effects
What is a variable?
Another word for a swinger
What is a pendulum?
Define capacity
What is how much liquid an object holds?
Another word for a flipper
What is a catapult?
Morgan and Landon want to see who can kick a ball the farthest. Morgan lines up and kicks a volleyball. Landon winds up and kicks a bowling ball. What's wrong with this?
He kicked a bowling ball!
And they changed two things (the person and the ball). Only the person should change. The ball should be the same.
The number of variables you should change in an experiment
What is one?
The shorter the pendulum, the _________ the number of swings
What is greater?
The tool we used to measure the capacity of our boats
What is a graduated cylinder?
This object flipped the highest during our first day of investigations
What is the wood cork?
Tori and Corbin want to see which pet food their dogs like best. Tori feeds Dog Chow to her dog and Corbin feeds Dog Biscuits to his dog. What's wrong with this?
They fed two different foods to two different dogs. Only change the food. Keep the dog the same.
An educated guess as to what will happen in an experiment
What is a hypothesis?
The longer the pendulum, the ________ the number of swings
What is fewer?
The relationship between the capacity of the boats to the number of passengers it will hold
What is as the capacity increases so does the number of passengers?
The higher the angle of the flipper, the ______ the foil ball traveled
What is farther?
Josh and Lauren want to see which of their sleds slides the farthest. Josh takes his sled and slides in his backyard. Lauren takes her sled and slides in her backyard. This is obviously wrong! What variable(s) should they control?
They should keep the hill the same (pick a backyard, people)! They should also keep the person the same (weight).
The scientific step after you complete an experiment and have observed what happened
What is draw conclusions?
Three variables that might accidentally impact the number of swings the pendulums completed in 15 seconds
What are incorrect counting of swings, incorrect counting of time and releasing too soon or too late? (Other possible answers)
Three variables that might accidentally impact the number of passengers our boats held
What are incorrect measuring, uneven cutting, placing pennies too roughly and making waves in the water? (Other possible answers)
The farther out the flip stick, the ______ the foil ball traveled
What is shorter?
Three friends of equal intelligence want to do an experiment to see who can get the highest score on the test. Nigel goes to bed early. Carson studies for two hours. Claire has a healthy breakfast. They all take the same test. What are two variables in this experiment that are not being controlled?
What are bed time, study time and diet?
In a scientific procedure, each step should be numbered and start with this type of word
What is a verb?
The two variables that made no difference in the number of swings the pendulum completed in 15 seconds
What are release point and weight of the pendulum bob?
In the penny boat experiment, this is why we only used pennies made in 1983 and after
What is because pennies made before 1983 weigh a different amount?
The more pennies placed under the flip sticks, the ______ the foil ball traveled
What is shorter?
Three friends want to do an experiment to see who can get the highest score on the test. Nigel goes to bed early. Carson studies for two hours. Claire has a healthy breakfast. They all take the same test. Name the controlled variable in this experiment.
What is the test?