Controlled Experiments
A controlled experiment? (What is in a controlled experiments)
What is Controlled experiment has only one independent variable (changed variable). *The experiment answers the question that is being asked by changing only one variable?
What is a swinger in other words?
Pendulum
the instrument used to measure capacity
Graduating cylinder
Another word for flipper
catapult
Caroline wants to find out the number of ants that come out of the ant hole in her backyard depending on the day. She accidentally counts the ants from a different ant hole. What's wrong with this?
She changes the ant hole too!! only the day of the week should change.
Independent variables and dependent variables.
What is the one variable that is changed and the measured variable?
What is the variable that was changed in the experiment?
the length of the string, and the angle of where it as dropped, and the weight of the bob.
The amount of liquid an object can hold
What is the object that flipped the highest in the first day?
Wooden cork
Bob Ross is painting a picture and he wants to find out which medium is the best to paint with. He uses an oil base, an acrylic base to paint two different paintings.
What's wrong with this?
Bob Ross should have only changed the base. not the picture being painted.
Is this a controlled experiment?
Bob is trying to find out if the distance an airplane travels changes depending on the shape of it. the first day, he tests out the first standard airplane shape above his carpet floor in his room. The second day, he does it out in his backyard.
NO!!!!! Because the amount of wind pushing against the airplane changes. The carpet has nothing to do with this.
what were the two variables that didn't make an impact on the number of swings?
the weight of the bob and the angle the pendulum was dropped at.
The More the capacity, the ________ the number of passengers
Greater
The higher the angle of the flipper, the ______ the foil ball traveled
farther
Josh and his friend, Newton want to find out which badminton racket hits the farthest. Josh says he wants to do the hits so he does it the first time. He gets hurt and asks Newton to do the next few trials.
What's wrong with this?
The friends are not only changing the racket but are also changing the person.
In a scientific procedure, each step should be numbered and start with this type of word.
What is a verb?
The longer the string, the _____ number of swings.
The shorter the string, the ______number of swings.Greater
Shorter
The lower the capacity, the_________ the number of passengers
Smaller
The farther out the flip stick, the ______ the foil ball traveled
Shorter
George Washington wants to see how long it takes an apple to fall from a tree depending on its type. He collects apples from different trees of different ages.
What's wrong with this?
Apples from younger trees are generally smaller and lighter changing two things. The type and size.
The scientific step after you complete an experiment and have observed what happened
Draw conclusions
What mistake could you possibly make while collecting data?
Miscounting the swings
time not correctly started
and more
what is one thing that could go wrong in the collection of data, and keeping the experiment controlled?
Miscutting, force of placement of pennies, weight of pennies and more
The more pennies placed under the flip sticks, the ______ the foil ball traveled
Shorter
Thomas Jefferson and James Maddison are competing to see who rind the fastest. They ask John Adams to time each of them on different stopwatches.
What's wrong with this?
NOTHING!!