Transcript Motion and Force Speed, Velocity, Slope, Friction, Acceleration

Motion and Force
Speed, Velocity, Slope, Friction, Acceleration, and Distance
Vocabulary Terms - Introduction to a Marble Maze Project
Fourth Grade Science
• GLE 0407.11.2 Design a simple investigation to
demonstrate how friction affects the movement of an
object.
• 0407.11.2 Design an investigation to identify factors that
affect the speed and distance traveled by an object in
motion.
• SPI 0407.Inq.1 Select an investigation that could be
used to answer a specific question.
Force
• A push or pull that
causes an object
to move, stop, or
change direction
• A force will cause
an object with
mass to
accelerate.
Forces can affect motion in
several ways:
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•
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•
•
→ They can make objects start moving.
→ They can make objects move faster.
→ They can make objects move slower.
→ They can make objects stop moving.
→ They can make objects change
direction.
Distance
• Distance is the measurement from one
point to another.
• Distance may refer to a physical length, a
period of time, or an estimation.
Friction
• Friction is a force that acts against or stops
motion when two surfaces rub against each
other.
Velocity
• Velocity is an object’s speed in a particular direction.
If the direction changes, the velocity will also change.
Speed
• Speed is a measure of the distance an object
moves in a given amount of time.
• During a typical trip to school, your car will
undergo a series of changes in its speed.
Acceleration & Deceleration
• Acceleration is an increase in speed.
• Deceleration is a decrease in speed.
Slope
• Slope is used to
describe the
steepness, incline,
or grade of a
straight line.
Gravity
• Gravity is the force
that pulls all objects in
the universe toward
one another.
• Gravity is the force
which pulls all objects
to the surface.