The problem or task to be investigated is written as a question by the student. It provides the overall direction for the laboratory investigation and must be addressed in the conclusion. This becomes the objective of the lab.
A good expeiment is validated through repitition. The instructions, the data and it's analysis need to be clearly written.
![Quiz](../pics/Quiz_Title.png) |
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. |
|
|