8.2 UNIT 2 SECOND QUARTER
UNIT 2: MOTION
II. UNIT 2: Motion
unit, students will be introduced to basic concepts about motion. Students will
describe the motion of an object based on an object’s position, direction, and
Calculate the average speed of a moving object and illustrate the motion
of objects in graphs of distance over time.
Describe the qualitative relationships among force, mass, and changes in
Describe the forces acting on an object moving in a circular path.
Identify questions that can be answered through scientific investigation.
Identify and present relationships between variables in appropriate
CT State Grade Level Expectations
GRADE-LEVEL CONCEPT 1: u The motion of
an object can be described by its position, direction of motion and speed.
1. An object is said to be in motion when its position
changes in relation to a point of reference.
GRADE-LEVEL CONCEPT 2: u An unbalanced
force acting on an object changes its speed and/or direction of motion.
GRADE-LEVEL CONCEPT 3: u Objects moving
in circles must experience force acting towards the center.
LITERACY TERMINOLOGY: Motion, point of reference, speed, constant speed,
average speed, position-time graph,
slope, force, friction, gravity, inertia, mass, acceleration,
balanced/unbalanced forces, net force, circular motion
is an object in motion?
do you know an object’s speed and velocity?
can you graph motion?
are Newton’s Laws of motion?
object is said to be in motion when its position changes in relation to a
point of reference.
meter is the SI unit of length.
speed of an object can be determined by dividing the distance the object
traveled by the time it took to travel that distance.
velocity of an object is described by its speed and direction.
distance versus time graph can be used to analyze the motion of an
is defined as a change in an object’s speed or its direction.
is an object’s tendency to resist a change in its motion. Inertia is
Newton’s first law of motion.
depends on an object’s mass and its acceleration. This is Newton’s second law of
an object exerts a force on another object, the second object exerts a
force on the first object of equal strength but in opposite
direction. This is Newton’s
third law of motion.
second law can be applied to a force causing an object to move in a
circular path, but it is not a separate force. It is simply a known force – tension, friction,
gravity – causing the circular motion.
e. Essential Skills:
To identify and present relationships between variables using