Engineering Flashcards
6 simple machines
wedge, screw, lever, pulley, inclined plane, & wheel and axle
a simple machine is designed with the purpose to…
make work easier
work is the application of stress on an object added to the distance the object travels when force is applied.
false
mechanical advantage
the manipulation of speed, distance, and force
an example of mechanical advantage
a crowbar
the ancient egyptians, aztecs, and mayans used simple machines aid in the construction of their respective pyramids.
true
a simple machine that you use daily
car (wheel and axle)
a highway ramp is an example of
inclined plane
an example of a wedge that pushes materials apart and cuts things.
axe
a screw pulls things apart and is pushed into place
false
an example of a pulley is an escalator
false
why do we use simple machines?
to make work easier
_______ is responsible for the production of blood
bone marrow
the hinge joint allows for _________ degrees of motion, in one direction.
180
the adult human body contains _______ bones
206
Explain what biomedical engineers may be responsible for in their careers
cast, meds, and prosthetic limbs
amputee
a person who has their limb removed
osteoporosis occurs when bone mass has __________, due to lack of calcium and vitamin D. Holes _____________ within bones, leading to weak and __________ bones.
deficiency; form; brittle
identify the primary functions of bones
-bones contain bone marrow, in turn bones are responsible for the production of blood
-bones protect your vital organs and allow you to stand upright
-bones work synonymously with muscles to allow for movement
bone strength relies on several factors that do not naturally occur in our bodies, but are important. To ensure healthy bones one should have a healthy amount of the following substances:
vitamin D