
For each short experiment, identify the dependent, independent and control variables.

1 
(Example) Every day the relative humidity is measured at 1:00 PM on the roof of the school. 


2 
The speed of a car is recorded every mile the car travels from home. 


3 
A lady bug is placed on the edge of a cd. Every 1/10 of a second the bugs facial expression is examined. 


4 
Every day after lunch time the amount of trash on the breezeway is collected and weighed. 


5 
A different year of the same model car is driven into a unmovable cement wall, front first, at 30 mph. After each collision the, distance the front is smashed in is measured. 


6 
The height a super ball bounces is measured after each of its bounces. 


7 
In a cold study the researchers measure the amount of nasal discharge every 6 hours from an infected the patient. 


8 
The time it takes to for a snail to travel every foot of distance is recorded. 


9 
The number of students in each teacher’s class at a school is counted every period. 


10 
A car speeds up on a highway from rest. Whenever the car’s speed increases by 10 mph the time is recorded. 


11 
Every year the number of car commercials during the superbowl is recorded. 


12 
A model rocket is launched 10 times. Each time the same rocket is launched with motors of indetical power, its maximum height is measured and recorded. 


13. 
In seperate trials, various amounts of sugar is added to 100 ml water. the weight of sugar that crystalizes is measured. 


14. 
The speed of the same child is measured on the same playground slide. But each time the child slides down, she slides on a different piece of fabric. 

