Log In | Register

Item RG158002: As water at the bottom of a jar becomes a little warmer than the water around it, the warmer water will start to rise.

A jar of water is placed over a flame, and the flame warms the water at the bottom of the jar.

What happens to the water at the bottom of the jar before it boils?

  1. As the water at the bottom of the jar becomes a little warmer than the water around it, the warmer water will start to rise.
  2. The water at the bottom of the jar will get warmer, but it will not rise.
  3. The water at the bottom of the jar will get warmer and warmer, but it will not rise until it starts to boil.
  4. All of the water in the jar will get warmer at the same time, and there will be no movement of the water in the jar as it is heated.
Distribution of responses
Answer Choice
Overall
Grades
Gender
Primary Language
 
n = 1150
4–5
n = 0
6–8
n = 640
9–12
n = 510
Male
n = 524
Female
n = 604
English
n = 1001
Other
n = 124
A. 53%N/A 54% 53% 53% 53% 54% 51%
B. 9%N/A 8% 10% 11% 8% 9% 10%
C. 30%N/A 31% 30% 29% 32% 31% 30%
D. 7%N/A 7% 7% 8% 7% 7% 9%