Force,+Motion+and+Energy

Category 2 is about... Reporting Category 2: Force, Motion, and Energy

The student will demonstrate an understanding of force, motion, and energy and their relationships.

Grade 8

(8.6) Force, motion, and energy. The student knows that there is a relationship between force, motion, and energy. The student is expected to

(A) demonstrate and calculate how unbalanced forces change the speed or direction of an object’s motion;

Readiness Standard

(B) differentiate between speed, velocity, and acceleration; and

Supporting Standard

(C) investigate and describe applications of Newton’s law of inertia, law of force and acceleration, and law of action-reaction such as in vehicle restraints, sports activities, amusement park rides, Earth’s tectonic activities, and rocket launches. Readiness Standard media type="youtube" key="9EIZo9egyL4" width="425" height="350"

Grade 7

(7.7) Force, motion, and energy. The student knows that there is a relationship among force, motion, and energy. The student is expected to

(A) contrast situations where work is done with different amounts of force to situations where no work is done such as moving a box with a ramp and without a ramp, or standing still.

Supporting Standard

Grade 6

(6.8) Force, motion, and energy. The student knows force and motion are related to potential and kinetic energy. The student is expected to

(A) compare and contrast potential and kinetic energy;

Supporting Standard

STAAR Grade 8 Science Page 4 of 12

Texas Education Agency

Student Assessment Division

Fall 2010

(C) calculate average speed using distance and time measurements; and Supporting Standard (D) measure and graph changes in motion. Supporting Standard (6.9) Force, motion, and energy. The student knows that the Law of Conservation of Energy states that energy can neither be created nor destroyed, it just changes form. The student is expected to (C) demonstrate energy transformations such as energy in a flashlight battery changes from chemical energy to electrical energy to light energy. Supporting Standardmedia type="youtube" key="grWIC9VsFY4" width="425" height="350"