Shelter Unit quizlet

What is the volume of a cube with a side length of 24 inches?

13,824 in3

What is the total R-value of a wall consisting of the following three materials: 1 inch Polyurethane Foam (R=6.9), 1 inch Styrofoam (R=4.8), and 1 inch Cork (R=2.08)?

13.78

What is the surface area of a cube with a side length of 24 inches?

3,456 in2

What is the total R-value of a wall consisting of the following two materials: 1/16 inch Cardboard (R=0.64), 1 inch Polyethylene Foam (R=4.38)?

5.02

What is the total R-value of a wall consisting of the following three materials: 1 inch Cork (R=2.08), 1/16 inch Cardboard (R=0.64), and 1 inch Styrofoam (R=4.8)?

7.52

Ture or false. To survive in the wild you should build your shelter as big as you can.

False. You want to create the smallest shelter you can

Would 1/2 inch thick aluminum have the same R-value as 1/4 inch thick aluminum?

No

What is the formula to find out the surface area of a hemisphere?

SA = 2 π r2 + π r2 = 3 π r2

What is the formula to find out the surface area of a half cylinder?

SA = πr2 + πrh + 2rh

Would the temperature inside the shelter be warmer or colder than the temperature outside?

The temperature inside the shelter would warmer then the outside temperature.

What is surface area?

The total area that the surface of an object has.

What is the formula to find out the volume of a cylinder?

V = π r2h

What is the formula to find out the volume of a cube?

V=s3

What is Thermal Conductivity?

a property of a material that indicates its ability to allow heat to flow through it

What is the best shape to build a shelter to survive? a) Rectangular Prism b) Cylinder c) Half Cylinder d) Hemisphere

c) Half Cylinder

What does R-value measure?

how well a piece of material resists the flow of heat through

What letter symbolizes thermal conductivity?

k

What is heat flow?

the movement of heat (energy) from the interior of Earth to the surface

What is conduction?

the process by which heat or electricity is directly transmitted through a substance

Would 1/2 inch thick aluminum have the same K-value as 1/4 inch thick aluminum?

yes