# Answers to Ch - Fort Thomas Independent Schools

```Answers to Ch. 9 Heat: Section Quizzes
Section 1: Temperature and Thermal Equilibrium
1.
2.
3.
4.
5.
6.
7.
8.
B
D
B
C
A
C
D
A
Section 2: Defining Heat
1.
2.
3.
4.
5.
6.
7.
8.
C
B
A
C
D
C
B
C
Section 3: changes in temperature and phase
1.
2.
3.
4.
5.
6.
7.
8.
B
C
A
D
A
C
B
A
Additional Problems (wkbook problem C, page 94-95: 1,2,6,7); quizzes (9-10 on all
quizzes)
Chapter review: 1, 2, 5, 10, 11-13, 15-17, 19, 20, 24-27, 31-32
Standardized test prep: All
Ch. 9 Review Questions pg 322-323
1.
2.
5.
Temperature increases as internal energy increases, except during a phase change.
The temperature of the two objects are the same.
a) the hot griddle (it has the same temperature but more mass)
b) the 1-kg block of ice (it has the same temperature but more mass
10.
1947 degrees F (melting point of gold) is 1064 degrees C, 1337 K
11.
b. Both have the same temperature, so no heat is transferred.
12.
When the air temperature is 35 degrees C
13.
None. Toast and oven are in thermal equilibrium
15.
Trapped air is a good insulator, so the internal energy of your body is not easily
transferred to the environment.
16.
Its temperature is likely to increase slightly because of the stirring adds energy.
17.
Stirring a hot cup of coffee causes hotter portions to come into contact with the
air, so heat is transferred from coffee to air at a faster rate.
```