Tuesday, November 26, 2024. Day 1, 119

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:

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:

  1. Friction is an opposing force caused by contact (rubbing) between surfaces.

  2. 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

  3. Friction is influenced by factors.

    • surface roughness

    • in general, rough surfaces create more friction, smooth ones less

      • sandpaper

      • ice

  4. Weight

    • more weight means a larger normal force between objects and a surface.

    • The greater this force, the greater friction is

  5. 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

  6. Material (ice versus concrete)

Time remaining?

  • Study Greek and Latin