Finals Flashcards
Completes life cycle in one year (growing season)
Annual
Completes life cycle in 2 years
Biennials
Lives for more than 2 years
Perennials
One main root that grows downward
Tap
Plant movement
Tropism
Response to gravity
Geotropism
Response to solid objects such as rocks
Thigmotropism
Plant production
Propagation
Male sex cell (sperm)
Pollen
Female sex cell (egg)
Ovule
Offspring are genetically identical to parent
Clone
Flower that has 4 principal parts
Complete
Male part of the flower
Stamen
Female part of the flower
Pistil
Major climate requirements
Precipitation, temperatures, and light
The flow of electrical current across a narrow gap
Arc
Metal deposited when the electrode is moved in one direction
Bead
Bending the metal out of shape due to the forces of expansion and contraction
Distortion
A non-metallic covering on many electrodes
Flux
The molten part of of the weld where heat is applied
Puddle
It is the measure of the amount of electrical current
Amperage
It is the metals ability to resist being pulled apart (1000 lbs./sq. in.)
Tensile strength
Name four weld joints
A) butt
B) lap
C) T
D) corner
Name four positions for arc welding
A) horizontal
B) vertical
C) overhead
D) flat
A good diameter of an electrode
1/8 of an inch
Distance from the original surface of the base metal to that point at which fusion occurs
Penetration
Non-metallic solid that covers bead and should be removed after cooling has taken place
Slag
Short weld made to hold parts to be welded in place until the first welds are made
Tack weld
Electric pressure; the force that causes current to flow in a circuit
Voltage
The way to strike an arc
Drag or tap
Many small roots that spread out through the soil
Fibrous