Motion is the act of changing location or position. It occurs when an object changes its position relative to a reference point. Motion is described in terms of displacement, distance, velocity, acceleration, and time.

**Linear Motion:**Motion that occurs in a straight line.**Circular Motion:**Motion along a circular path.**Rotational Motion:**Motion in a circular path around a fixed point.

**Distance:**The total path traveled by an object. It is a scalar quantity and is always positive.**Displacement:**The change in position of an object. It is a vector quantity and has both magnitude and direction.**Velocity:**The rate of change of displacement. It is a vector quantity and is expressed as displacement per unit time.**Acceleration:**The rate of change of velocity. It is a vector quantity and is expressed as change in velocity per unit time.

There are several equations that describe the motion of an object, including:

**Distance formula:**d = rt, where d is distance, r is rate, and t is time.**Displacement formula:**Δx = x₂ - x₁, where Δx is displacement, x₂ is final position, and x₁ is initial position.**Velocity formula:**v = Δx / Δt, where v is velocity, Δx is change in displacement, and Δt is change in time.**Acceleration formula:**a = Δv / Δt, where a is acceleration, Δv is change in velocity, and Δt is change in time.

To understand motion better, it's important to:

- Understand the difference between distance and displacement.
- Practice converting between different units of speed and velocity.
- Work on problems involving acceleration and deceleration.
- Use diagrams and graphs to visualize different types of motion.

Study GuideFossils and extinct animals Worksheet/Answer key

Fossils and extinct animals Worksheet/Answer key

Fossils and extinct animals Worksheet/Answer key

Fossils and extinct animals Vocabulary/Answer key

Fossils and extinct animals Vocabulary/Answer key

Fossils and extinct animals Vocabulary/Answer key

Fossils and extinct animals Vocabulary/Answer key

Fossils and extinct animals

Concepts of Life Science (SC1, SC2, SC3)

The student demonstrates an understanding of how science explains changes in life forms over time, including genetics, heredity, the process of natural selection and biological evolution by describing fossil evidence (e.g., casts, track ways, imprints, etc.) of extinct organisms.