bryan wanted to know whether a wool sock or a...
bryan wanted to know whether a wool sock or a cotton sock would keep something warmer. he tested the socks by putting the wool sock around cup 1 and the cotton sock around cup 2. he filled both cups with hot water. then he measured the change in the temperature of the water after 30 minutes. if bryan used the materials shown in the picture above, was the experiment a fair test? a. no, only one condition was changed. b. yes, only one condition was changed. c. no, more than one condition was changed. d. yes, more than one condition was changed.
Answer
# Explanation:
## Step1: Identify variables in experiment
The experiment aims to test if wool or cotton sock keeps something warmer. The independent variable should be the type of sock (wool or cotton), and the dependent variable is the change in water - temperature. Other conditions like the initial amount and temperature of water in the cups, the size of the cups etc. should be kept the same.
## Step2: Analyze the experiment setup
Bryan put the wool sock around cup 1 and the cotton sock around cup 2, filled both cups with hot water. But the picture shows different - sized cups (cup 1 is larger than cup 2). So, besides the type of sock, the size of the cup (which can affect heat - loss/gain) is also different.
# Answer:
C. No, more than one condition was changed.