Transcript Where do you think most of the energy from the fuel ends

Human
Body
Nerve
Impulses
Multiple-Choice Questions
Physics and Astronomy Outreach Program at the University of British Columbia
Question 1
Nerve Impulses
Shorter people have on average _____eye-foot
reaction times compared to taller people.
a) longer
b) shorter
c) equal
Physics and Astronomy Outreach Program at the University of British Columbia
Question 1 solution
Nerve Impulses
Shorter people have on average _____eye-foot
reaction times compared to taller people.
a)longer
b) shorter
c) equal
For shorter people the distance from brain
to the feet is shorter so the nerve impulse has
less distance to travel.
Physics and Astronomy Outreach Program at the University of British Columbia
Question 2
Nerve Impulses
Based on height differences alone a person
that is 20% taller has an eye-foot reaction time
______ percent longer.
a)10%
b)20%
c)40%
Physics and Astronomy Outreach Program at the University of British Columbia
Question 2 Solution
Nerve Impulses
Based on height differences alone a person
that is 20% taller has an eye-foot reaction time
______ percent longer.
a) 10%
b) 20%
c) 40%
t = d/v, so that t is linear with distance. When
d changes by a certain percentage, t changes
in the same way.
Physics and Astronomy Outreach Program at the University of British Columbia
Question 3
Nerve Impulses
A signal from the brain travels with
constant velocity along the nerves.
a) true
b) false
Physics and Astronomy Outreach Program at the University of British Columbia
Question 3 solution
Nerve Impulses
A signal from the brain travels with
constant velocity along the nerves.
a)true
b) false
The signal propagates electrically along the
neurons much faster than by chemical diffusion
between the neurons.
Physics and Astronomy Outreach Program at the University of British Columbia