A
nerve cells can be found in our skin and contain specialized structures, called _____ , that help us detect different feelings like pain, temperature, and force.
sensors
Our skin contains sensors for pain, temperature, and light touches. Which outnumbers the others?
sensors for pain
bend, distort, or change shape
deform
How much do you have to push on any object to get it to deform - this is the _____ question
lesson 4
AN OBJECT THAT WILL NOT RETURN TO ITS ORIGINAL SHAPE AFTER FORCE HAS BEEN APPLIED IS _____ DEFORMED
PERMANENTLY
the moment when two objects hit each other
collision
AN OBJECT THAT RETURNS TO ITS ORIGINAL SHAPE AFTER A FORCE HAS BEEN APPLIED IS _____ DEFORMED
TEMPORARILY
this is the variable to observe the changes in caused by a change in the independent variable
DEPENDENT VARIABLE
when a moving object collides with another object the kinetic energy is _____ to the other object.
transferred
the energy an object has due to its motion
kinetic energy
People with limited or no vision may use their _____ to read by
fingers
unable to bend or be forced out of shape
rigid
engineers test how different materials respond to different amounts of ____ applied to them
force
What is congenital analgesia?
a very rare condition where people are unable to feel pain
WHAT ARE THE 3 TYPES OF VARIABLES IN ANY COLLISION?
Independent, dependent, and controlled
These are variables to keep constant in each test
CONTROL VARIABLE
raised dots in a book are part of a reading and writing system called _____.
Braille
_____ is the largest amount a sample could be deformed and still return to its original shape after the force on it was removed.
elastic limit
A _____ is a factor you want to change or control in an investigation
variable
a force between two objects that touch
contact force
_____ sensors that are attached to hairs deform as the hair comes in contact with something else and moves.
Touch
this is the variable to change each time you test
INDEPENDENT VARIABLE
A PUSH OR PULL EXERTED ON AN OBJECT
FORCE
sensors send a chemical signal to the nerve cells that they are connected to. These nerve cells are called _____.
neurons
Students at a university tested two different types of metals - steel and aluminum - which one had a higher elastic limit?
steel