GRAVITATION


7.1 - Planetary Motion and gravitation
  • Objectives:
  • Students will...
  • - relate Kepler's laws to the law of Universal Gravitation
  • - calculate orbital speeds and periods
  • - describe the importance of cavendish experiment
  • in order to explain how planetary motion relates to gravitation

  • Vocabulary terms to know...
    • kepler's first law
    • kepler's 2nd law
    • kepler's 3rd law
    • gravitational force
    • law of universal gravitation

  • WARM-UP
  • - Kwl - planetary motion
  • ENGAGEMENT
  • - Kepler's Laws: http://www.youtube.com/watch?v=lm9Ej-YMXto
  • - Newton's Law of Universal Gravitation: http://www.youtube.com/watch?v=_q6CXni6yTE&feature=related
  • EXPLORATION
  • - kepler's laws
  • - law of universal gravitation

  • Classwork
  • - Flash Cards for ALL EQUATION & VOCABULARY TERMS.
  • - 23 - 29, pg 190
  • - 1-5, pg 174

  • ELABORATION
  • Homework

Section 7.2 - Using the Law of Universal Gravitation

ObJectives:

Students will...
1. Solve orbital motion problems
2. Relate weightlessness to objects in free fall
3. describe gravitational fields
4. Compare views on gravitation
in order to use the law of Universal Gravitation

  • Vocabulary terms to know...
    • gravitational field
    • inertial mass
    • gravitational mass
    • speed of a satellite oribiting the earth
    • Period of a planet orbiting the earth

  • WARM-UP
Quiz
ENGAGEMENT
  • Drop a ball vertically
  • how far will it fall in the 1st second? (4.9 m)
  • Throw it sideways ( 10 m/s, 50 m/s 500 m/s)...how far will it fall in the first second ( 4.9 m)
  • How far will it fall horizontally? ( 10 m, 50m, 500 m)
  • What would the path look like?
  • relate this activity to figure 7-9.

EXPLORATION
  • - kepler's laws
  • - law of universal gravitation

Classwork
  • - Flash Cards for ALL EQUATION & VOCABULARY TERMS.
  • - 32 - 37, 40 - 49, pg 190


ELABORATION

Problem Solving...

55-60, 71-74, pg 192