Notes:
Out Today - medical appointments
Homeroom
Assignments Due:
Science: G&L Wk 9 Quiz today
Math: 5 Topic Goals Friday.
Algebra:
SciTech:
ELA:
Spanish:
Civics:
Grade 8 Lesson
Do Now:
Homework:
G&L Final exam Monday, December 9th
Today’s Agenda:
Pass back and go over G&L Week 10 Quiz
Newton’s 1st Law
Review PhET Lab: Exploring Friction
Notes on Friction with demonstrations:
Friction is an opposing force caused by contact (rubbing) between surfaces.
Friction always:
opposes a force “trying” to move an object
opposes the motion of an object.
acts in the opposite direction of another force or motion
Friction is influenced by factors.
surface roughness
in general, rough surfaces create more friction, smooth ones less
sandpaper
ice
Weight
more weight means a larger normal force between objects and a surface.
The greater this force, the greater friction is
Motion
a nonmoving (static) object experiences more friction than a moving (sliding) object
It takes a bigger push to start a n object moving than needed to keep it moving.
sledding
pushing a dresser or table
Material (ice versus concrete)
Time remaining?
Study Greek and Latin