 |
Design & Motion Vocabulary
- Friction
- A force that resists movement between two objects that are touching.
- Gravity
- A force of attraction between any two masses. The strength of this force is dependent on the mass of each object
and their distance from one another.
- Inertia
- The tendency of a moving object to stay in motion or a resting object to stay still is inertia.
- Force
- A push or a pull. A force is also needed to make a moving object slow down, change direction or stop moving.
- Potential Energy
- Stored energy that can be released to become other forms of energy.
- Kinetic Energy
- energy associated with motion
- Work
- is only done when a force makes something move. Work = Force X distance Work is measured in Joules.
- Perpetual motion
- The term perpetual motion, refers to movement that goes on forever.
- Distance
- How far something moves.
- Speed
- A measure of how fast something is moving. How far an object can go in a certain amount of time.
- Energy
- Ability to do work.
- Unbalanced Forces
- initiate and influence movement.
- Balanced Forces
- When an object is at rest it is balanced.
- Momentum
- The rate of acceleration. Momentum = Mass x Velocity
- Acceleration
- Acceleration is a vector quantity which is defined as the rate at which an object changes its velocity. An object
is accelerating if it is changing its velocity.
- Motion
- the state in which one objects distance from another is changing.
- Technological Design
- The process of identifying a problem, creating a solution, evaluating the solution by testing, and then refining the design to
improve performance is the essence of technological design.
- Template
- a set pattern, mold or form.
- Technological drawing
- Blue Print - detailed plan that you could use to recreate the same vehicle or design again.
- Velocity
- The rate of change of position.
- Tension
- a force exerted by a stretched object, such as a spring.
- Revolutions
- the spinning of a wheel. One complete spin is equal to one revolution.
- Air resistance
- The force of friction on a vehicle as it moves through the air.
- Propeller
- The blades of a propeller act as rotating wings (the blades of a propeller are in fact wings or airfoils), and produce force.
- Axle
- a bar or shaft on which a wheel turns.
- Drag
- the force that opposes the forward motion of a vehicle.
- Laws of Motion
- Three laws formulated by Sir Isaac Newton, the describe how objects move in relation to the forces acting on them.
- Prototype
- an original model or design.
- Steps in meeting a Design Challenge
- 1. Plan
2. Build
3. Test
4. Evaluate
- Simple Machines
- machine with few or no moving parts that makes it easier to do work.
- Pulley
- kind of wheel with a groove for a rope or cable.
- Inclined Plane
- a wedge is an example of a ramp.
- Screw
- simple machine that is an inclined place wrapped around a rod.
- wedge
- is a simple machine that is really a type of inclined plane - a wedge can have either 1 or 2 sloping sides. A chisel is a wedge.
A wedge is an axe.
- Lever
- a simple machine that is a rigid bar that turns around a fixed point. The fixed point is referred to as a fulcrum.
- Wheel & Axle
- simple machine that consists of a large wheel fixed to a smaller wheel or shaft called an axle.
- Energy Forces
- 1. Atomic
2. Electrical
3. Solar energy
4. Wind
|
|
