4. Quiz 1: Nature of Science
ASSIGNMENTS
Assignment
Attempt 1 of 40
COURSES
SECTION 1071
QUESTION 5 of 10
Suppose an experiment is designed to test the durability of batteries in different conditions. All of the batteries tested
are double-A (AA) Brand X. All sets of batteries are preconditioned in different environmental conditions for exactly 168
hours (1 week).
Set 1: 0°C (freezing point of water)
Set 2: 24°C (approximately room temperature)
Set 3:37°C (approximately body temperature)
The batteries are then continuously used to power identical mechanical drummer toys. As long as the toy keeps
drumming the battery is considered functional. The drumming time for each toy is measured as an indication of battery
durability.
In this experiment, which condition is not controlled?
temperature
brand of batteries
test for durability
type of battery (battery size)