mass hanging from a fixed point that is free to swing to and fro
What is a pendulum
100
a scientific study where only one variable is changed
What is a controlled experiment
100
polluted with a foreign substance
What is contamination
100
a lever arm that is loaded with energy
What is catapult
100
An important piece of equipment for testing water
What is spot plate
200
any motion or activity that repeats itself
What is a cycle
200
If one variable is known we can use the graph to predict the other corresponding variable
What is two coordinate graph
200
Amount of particle per pre determined volume
What is concentration
200
any collection of objects that is related in some way
What is system
200
ppb
What is parts per billion
300
anything that we can change in an experiment
What is a variable
300
the amount something can hold
What is capacity
300
Where something begins
What is source
300
The process of playing one variable off another to achieve a result
What is compensating variables
300
easily broken down in a landfill
What is biodegradable
400
any procedure in an experiement before we use variables
What is a standard
400
What did you have to do to the pennies before you put them in the boats
What is dry them off
400
A chemical agent that changes color in the presence of a contaminate
What is indicator
400
Which of these angles would result in the greatest distance? 0, 30, 40, 90
What is 40 degrees
400
safe place to dispose of garbage
What is landfill
500
Which variable caused the change in swingers, mass, height or length of string
What is length of string
500
What variable caused the change in capacity, number of pennies, size of boat, shape of the bottom of the boat
What is the size of the boat
500
What was the source of the water contamination in Fruitvale
What is the old landfill or dump
500
In an experiement, all of these can improve the accuracy of the results EXCEPT: controlling all variables, repeating the experiment, using smaller units, using larger units