Man Knowledge Flashcards
What is an alloy?
A man made mixture of different metals.
What is a metal?
a naturally occurring element.
What is steel?
Steel is an alloy. It is a mixture of Iron and Carbon.
What is aluminum?
An alloy. Bauxite ore, mixed with silica and iron oxide.
What is the ore of a metal?
The part which is mined from the ground.
What is stainless steel?
(Non-rusting steel). Key ingredient is chrome, which forms a protective layer on the surface of the alloy.
What is the difference between hard wood and soft wood?
Deciduous (hard) vs coniferous (soft). There is a difference in the types of seeds that fall from a tree. If a seed has covering (fruit or shell) it is a hard wood. If a seed has no covering (like a pine cone) it is a soft wood. There is also the difference of needles vs leaves. In general, hard woods are more durable and soft woods tend to grow faster, longer, and straighter.
What is an acorn?
The “nut” that comes from an oak tree. AKA an oak nut.
Commonly used hardwood that is considered very tough?
Hickory, maple
Janka hardness test
The average amount of force it takes to embed half the diameter of a .44” ball of steel into a piece of wood.
Does all wood float?
No, but most does.
What is the best wood for tool handles and why?
Hickory, because of its strength and ability to absorb shock.
Benefits of soft woods
Grows longer, straighter, and quicker. It is more plentiful. It is used in the framing of a house.
What are all the doors in my house?
Panel doors. They are all solid wood.
What are the 3 different types of wooden doors?
Panel, Slab (solid or hollow), and Ledge (barn doors).
System for lifting and moving heavy things through a garage
I beam and trolley system.
What are the differences between
a) Diamond
b) Aluminum oxide composite
c) Silicon oxide composite
d) Carbide-tipped
Circular saw blades
Look up angle grinder disks
What is a casement window?
A window that opens from the side like a door. It has door hinges on the side.
What are telephone poles and railroad ties coated in and why?
Creosote. Its a tar that preserves the life of the wood. Protects against weather and termites.
How is pressure treated wood made?
It is put into a pressurized tube that has chemical pumped into it.
What type of wood is typically pressure treated?
Softwood. Typically pine or cedar.
What is glass?
Melted sand. Silica turns to glass after being put into a kiln.
What is the order of a standard socket set?
Blah
Different types of walls
a) Partition (doesn’t connect roof to floor)
b) Exterior
c) Sleeper (retaining wall)
d) Load Bearing
What is bigger than 3/16?
1/4
What is bigger than 1/4?
5/16
What is bigger than 5/16?
3/8
What is bigger than 3/8?
7/16
What is bigger than 7/16?
1/2
What is bigger than 1/2?
9/16
What is bigger than a 9/16?
5/8
What is bigger than a 5/8?
11/16
What is bigger than a 11/16
3/4
What is bigger than a 3/4?
13/16
What is bigger than a 13/16?
7/8
What is bigger than a 7/8?
15/16
What is bigger than a 15/16?
1 inch
What is the disadvantage and advantage of a 12 point wrench?
Easier to reset on the bolt head to turn a bolt in a cramped space. More likely to strip the bolt. More likely to grab onto a bolt that has been stripped.
Take a day to learn about past wars
Oz in a pound
What is a back flow preventer?
A valve that is put onto non potable water systems to prevent back flow. If the city water was to lose pressure, the water wouldn’t go the reverse direction. Prevents fertilizers from going into city water.
