Update

Students are working hard to understand force and motion.  We've been using lots of hands on investigations for them to grasp the concepts.

There will be a vocabulary quiz Friday Feb. 24th.

Words to Know

Vocabulary _ Force and Motion

1. Force—A push or a pull that one object exerts on another object with or without direct contact (e.g., friction, gravity). Causes a change in speed or direction.

1. Push or Pull:

1. Balanced forces—forces that are equal in size but opposite in direction.
2. Unbalanced forces—forces that are unequal in size and may or may not be opposite in direction.

2. Types of Force:

1. Buoyant force -the upward force exerted on an object by water.
2. Gravitational force - the pull of all objects in the universe on one another.
3. Magnetic force - the force produced by a magnet.
4. Friction—a force that opposes motion through direct contact

3. Measurement of Force

1. Net force - the combination of all the forces acting on an object.
2. Newton – (N) the unit of measuring force
3. Weight—a measure of the force of gravity on an object.

3. Motion – the change in position of an object over time with respect to a reference point.

1. Position - the location of an object in space.
2. Acceleration – the rate at which velocity changes
3. Speed—the distance traveled by an object in a given amount of time.  Measured in distance per time, such as miles per hour (mph)
4. Inertia - the property of matter that keeps it at rest or moving in a straight line.
5. Velocity – the speed of a object in a particular direction