A way of making things where each worker does one small job over and over. The product moves from one person to the next until it's finished.
Assembly line
Production
Manufacture
Conveyor belt
An ancient vehicle that had two wheels and was pulled by a horse. People used them for racing or in wars.
Wagon
Chariot
Carriage
Rickshaw
A vehicle with two or four wheels that is pulled by an animal, like a horse or ox. It's used for carrying heavy loads.
Cart
wagon
Handcart
Sleigh
This means something is good for the natural world and doesn't cause a lot of pollution.
Greeny
Environmentally friendly
Sustainable
Eco-friendship
A large, closed horse-drawn carriage that was used for carrying people and mail a long time ago. It traveled between towns and had different "stages" or stops.
Passenger carriage
Old bus
Coach
Stagecoach
A machine used for carrying people or things from one place to another, like a car, bicycle, or bus.
Vehicle
Contraption
Machine
Transportation
Cylinders that roll, often used to help something move easily
Cylinders
Sprockets
Wheels
Rollers
An engine that creates power by burning fuel inside of it. This is the kind of engine most cars use.
Propeller
Power train
Internal combustion engine
Motor
A new tool, machine, or process that someone has created for the first time.
Invention
Creation
Discovery
Innovation
A vehicle that slides over dirt, snow or ice, often pulled by animals like dogs or reindeer. It doesn't have wheels.
Sledge
Toboggan
Sledder
Bobsled
An ancient region in the Middle East between the Tigris and Euphrates Rivers
Mesopotamia
Sumer
Fertile Crescent
Babylon
The process of growing, improving, or becoming more advanced over time.
Progress
Development
Improvement
Advancement
The tools, machines, and inventions people have created to solve problems and make life easier.
Tools
Technology
Machinery
Equipment
A large boat used for pleasure or racing.
Yacht
Sailboat
Vessel
Ferry
A two-wheeled electric vehicle that you stand on. It balances itself and is controlled by the way you lean your body.
Scooter
Hoverboard
Tricycle
Segway
A type of train that runs on a single track or beam, which is often raised above the ground.
Elevated train
Monorail
Locomotive
Railroad
