# MCAT Physics: Thermodynamics

### Description

Practice quiz for MCAT physics portion, focus on thermodynamics.
Quiz by Mike Nervo, updated more than 1 year ago
 Created by Mike Nervo about 10 years ago
958
25

## Resource summary

### Question 1

Question
Thermodynamics is the study of the flow and transformation of energy in the universe.
• True
• False

### Question 2

Question
In the zeroth law how much net flow of heat flows between the objects?
• 1
• 0
• 2

### Question 3

Question
What is a major characteristic of absolute zero and what is its measurement?
• no thermal energy 0 K
• no thermal energy 0 J
• no thermal energy 0 D

### Question 4

Question
celsius to fahrenheit is Tf=(9/5)Tc+31
• True
• False

### Question 5

Question
The change of temperature in solids results in a change in their ________.
• width
• height
• length

### Question 6

Question
The equation for a change in length of a solid due to a ∆T is... ∆L=(α)(L)(∆T) α = coeff. of linear expansion (specific to material) L is the original length
• True
• False

### Question 7

Question
The change of temperature in liquids results in a change in their ________.
• weight
• length
• volume

### Question 8

Question
The equation for a change in volume of a liquid due to a ∆T is... ∆V=(β)(V)(∆ T) where β = 3α β = coefficient of volume expansion (in K-¹ or °C-¹) V is original volume
• True
• False

### Question 9

Question
First Law of Thermodynamics (internal energy)
• ∆ U= ±Q + ±X
• ∆ U= ±Q + ±W
• ∆ U= ±Q + ±Z

### Question 10

Question
Work done by the system is...
• positive
• negative
• neutral

### Question 11

Question
Work done on the system is...
• positive
• negative
• neutral

### Question 12

Question
What are the three ways by which heat can be transfer E? Check all that apply.
• conduction
• convection

### Question 13

Question
The direct transfer of energy from molecule to molecule through molecular collisions is called _______.
• condution
• convection

### Question 14

Question
When temperature increases, density decreases.
• True
• False

### Question 15

Question
How many joules (E) does it take to raise 1kg of water by 1 degree?
• 4,194 J/ kg °C
• 4,394 J/ kg °C
• 4,184 J/ kg °C

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