Free Printable Geothermal Energy Review

1.

Match the following

a)

Stiff, sticky, fine-grained earth

1.

clay

b)

Granular material composed of fine mineral particles

2.

sand

c)

Granular material composed of mostly quartz

3.

silt

2.

Match the following

a)

Ratio of cooling capacity to power input

1.

Energy Efficiency Rating

b)

Expression of the efficiency of a heat pump

2.

Coefficient of Performance

c)

Change of energy due solely to change in temperature

3.

Quantity of Heat

d)

Amount of heat required to raise the temperature of a device by a single degree

4.

Heat Capacity

3.

What is the energy that comes from within the Earth itself?

a)

geothermal energy

b)

nuclear energy

c)

wind energy

d)

solar energy

4.

What uses electricity to heat and cool a building?

a)

Heat Capacity

b)

Quantity of Heat

c)

Heat Pump

d)

Energy Efficiency

5.

The depth of soil that is expected to freeze is called the (a) , but the vertical section showing all of the horizons is the (b) .

Choose from the below words

frost line

soil profile

clay line

silt line

sand line

6.

When using geothermal energy directly from the ground, I can (a) (b) (c) (d) , but I cannot (e) .

Choose from the below words

melt snow

cook

gold mine

pasteurize milk

wash cars

7.

What geographic terms BEST describe the areas to install a geothermal unit?

a)

Drainage Basin

b)

Fjord

c)

Volcanic Areas

d)

Plateaus

8.

How many types of geothermal units are there?

a)

2: Horizontal and Vertical

b)

2: Closed and Open

c)

2: Horizontal and Open

d)

2: Vertical and Closed

9.

A window measures approximately 0.672m x 0.7069m. What would the area of 15 windows be?

10.

What is the lateral area of a cylinder be if the radius is 8.6m and the height was 12 cm?

Use $Lateral\ Area\ =\ 2\pi rh$

a)

6.48 sq cm

b)

6.48 sq m

c)

64.8 sq m

d)

648 sq m

11.

Given the temperatures of 32C and 5C, a rate of heat transfer of 62000 watts, a material thickness of 0.01m, and an area of 5 sq m, what is the thermal conductivity?

Use $Q\ =\frac{kA\left(T_{hot}\ -\ T_{cold}\right)}{d}\$

a)

4.59 w/mK

b)

3348 w/mK

c)

1240000 w/mK

d)

837000000 w/mK

12.

Given temperatures of 30C and 12C, a thickness of 0.004 meters, a thermal conductivity of 0.96 w/mK, and a transfer area of 16 square meters, find the rate of heat transfer.

Use $Q\ =\ \frac{kA\left(T_{hot}-T_{cold}\right)}{d}$

a)

112,200 watts

b)

69,120 watts

c)

1.2 watts

d)

0.00432 watts

13.

Consider a soda can taken out of a refrigerator on a hot day. The can is made of aluminum, which has a thermal conductivity of 205 w/mK. The thickness of the can is 0.0005m. The radius of the can is 0.025m and the height of the can is 0.12m. The temperature of the soda is 1C. The temperature of the outside air is 32C. Considering only the sides of the can, how quickly will the soda heat up?

What do I need to solve for first?

a)

Calculate the thickness of the material.

b)

Calculate the lateral area of the can.

c)

Calculate the heat transfer.

14.

Consider a soda can taken out of a refrigerator on a hot day. The can is made of aluminum, which has a thermal conductivity of 205 w/mK. The thickness of the can is 0.0005m. The radius of the can is 0.025m and the height of the can is 0.12m. The temperature of the soda is 1C. The temperature of the outside air is 32C. Considering only the sides of the can, how quickly will the soda heat up?

Which formula do I use to calculate the lateral area of the soda can?

a)

$Area\ =\ lw$

b)

$Area\ =\ \pi r^2$

c)

$Area\ =\ 2\pi rh$

d)

$Area\ =\ \pi r^2h$

15.

Consider a soda can taken out of a refrigerator on a hot day. The can is made of aluminum, which has a thermal conductivity of 205 w/mK. The thickness of the can is 0.0005m. The radius of the can is 0.025m and the height of the can is 0.12m. The temperature of the soda is 1C. The temperature of the outside air is 32C. Considering only the sides of the can, how quickly will the soda heat up?

a)

95.73 W

b)

19,683 W

c)

239,583.5 W

d)

2,765,321 W

Geothermal Energy Review

Total questions: 15

Worksheet time: 20mins

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