Homework Help: Science

Posted by PLEASE I AM IN DESPERATLY NEED OF HELP on Tuesday, February 5, 2013 at 8:50pm.

Laith notices that the air in his science classroom is much warmer than the air in his math classroom. Which statement describes how the air particles are different in his colder math classroom?

A. They move faster on average
B. They are vibrating
C. They have less average energy
D. They move more freely

Science - Evan, Tuesday, February 5, 2013 at 9:06pm
ANS: C
• A is incorrect because particles have less energy and move slower, not faster, in a colder material. • B is incorrect because particles have less energy and are closer, not farther apart, in a colder material.
• C is correct because particles have less energy in a colder material such as the colder air in the math classroom.
• D is incorrect because particles have less energy and move less freely if a material is colder.

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