Free Printable Thermal Equilibrium and Thermal Expansion

1.

This is the study of energy transformations involving heat, mechanical work, ad other aspects of energy.

(a)

2.

Two systems are in thermal equilibrium if they have the same (a) .

3.

Which of these have the same temperature scale?

a)

Celsius and Kelvin

b)

Celsius and Fahrenheit

c)

Fahrenheit and Kelvin

4.

This temperature scale is used as the SI unit of thermodynamic temperature.

(a)

5.

The linear thermal expansion is proportional to the following, except _____.

a)

the kind of material

b)

the original length

c)

change in temperature

d)

density of the material

6.

Water does not freeze at the bottom of the lakes in winter because _____.

a)

ice is denser than water at $4\degree C$

b)

of anomalous expansion of water between $4\degree C\ to\ 0\degree C$

c)

ice reflects heat and light

d)

ice is a good conductor of heat

7.

The lowest temperature recorded in Alaska (US) was 79.8 degrees below $0\degree F.$ .Which temperature is equivalent to this? Check all that apply.

a)

$-62.11\degree C$

b)

$211.04K$

c)

$26\degree C$

d)

$299.26K$

e)

$-211.04K$

8.

The coefficient of volume expansion is _____ the coefficient of linear expansion of the same material.

a)

the same as

b)

a third of

c)

twice

d)

thrice

9.

Object A has a density of $0.95\ \frac{g}{cm^3}$ and a particular type of oil has a density of $0.8\ \frac{g}{cm^3}.$ Object A will then _____ on the oil.

a)

sink

b)

float

c)

neither sink not float

10.

The coefficient of linear expansion is _____ the coefficient of area expansion.

a)

equal to

b)

twice

c)

thrice

d)

half of

11.

In the problem "By how much would you need to heat a 10-foot bar of zinc to make it expand by one inch?", what do we need to solve for?

a)

$L$

b)

$\Delta T$

c)

$\Delta L$

d)

$T_f$

12.

A $1.0\ x\ 10^4$ meter steel railroad track with a coefficient of linear expansion of $\frac{12x10^{-6}}{\degree C}$ changes temperature from $18\degree C$ to $40\degree C$ . By how many meters will the railroad tracks expand? Type your answer without the unit.

(a)

13.

A surveyor uses a steel measuring tape that is exactly 60 m at a temperature of 20 °C. What is its length in meters on a hot summer day when the temperature is 38 °C? Use $\alpha=\frac{12x10^{-6}}{\degree C}$ . Type your answer using 3 d.p. without the unit.

(a)

14.

Which is true? Check all that apply.

A steel scale 1 m long is caliberated at $30\degree C.$ What is the length of this scale on a day with a temperature of $20\degree C$ if $\alpha=\frac{12x10^{-6}}{\degree C}$ ?

a)

initial length is 1m

b)

initial temp is $20\degree C$

c)

final temp is $30\degree C$

d)

change in temp is $-10\degree C$

15.

A metal meter stick expands 0.50 mm when heated from $20\degree C$ to $92\degree C.$ What is the coefficient of linear expansion of the material from which the stick is made? 1 meter = 1000 mm

a)

$\frac{6.94x10^{-6}}{\degree C}$

b)

$\frac{6.95x10^{-5}}{\degree C}$

c)

$\frac{7.8x10^{-6}}{\degree C}$

d)

$\frac{7.2x10^{-6}}{\degree C}$

16.

A copper rod is expanded 0.5 cm when heated from $25\degree C\ to\ 80\degree C$ . Which is true? Check all that apply.

a)

$\Delta L\ =\ 0.5\ cm$

b)

initial temp is $80\degree C$

c)

$\Delta T=55\degree C$

d)

initial length is 0.5 cm

17.

Which given is FALSE?

A brass disk has a radius of 10 cm at $30\degree C.$ Find the increase in the area when the temperature is raised to $90\degree C.$ Use $\alpha=\frac{18x10^{-6}}{\degree C}$ and area of a circle is $A=\pi r^2$

a)

initial area is $314.16\ cm^2$

b)

$\Delta T=60\degree C$

c)

$\Delta L=10\ cm$

d)

final temp is $90\degree C$

18.

Solve and express the answer in 2 d.p. without the unit.

A brass disk has a diameter of 10 cm at $30\degree C.$ Find the increase in the area when the temperature is raised to $90\degree C.$ Use $\alpha=\frac{18x10^{-6}}{\degree C}$ and area of a circle is $A=\pi r^2$ .

(a)

19.

What is the final area (in square meters) of a 6.00 sq.m aluminum sheet if the temperature changes from 410.0 K to 250.0 K? The coefficient of linear expansion of aluminum is $\frac{24x10^{-6}}{K}$ . Type your answer in 3 d.p. without the unit.

(a)

20.

Which given is correct? Check all that apply.

At 30°C, the edge (side) of a solid cube made of a steel is 4 cm. The coefficient of linear expansion of steel is $\frac{12x10^{-6}}{\degree C}$ . If its final volume is 64.30 cm³, what is the final temperature of the cube? Volume of a cube is $V=s^3$

a)

initial temp is $30\degree C$

b)

$\beta\approx\frac{3.6x10^{-5}}{\degree C}$

c)

initial volume is $64\ cm^3$

d)

$\Delta V=0.30\ cm^3$

Thermal Equilibrium and Thermal Expansion

Total questions: 20

Worksheet time: 2hrs 59mins

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