A cannon is a weapon that uses an explosive charge inside a heavy, metal barrel to force out a heavy metal ball called a cannonball at high speed. Cannonballs usually weighed around 19kg.
Cannons are rarely used today, however when they were commonplace they were extremely dangerous. They were particularly useful in battles between ships, as a cannonball could easily go through the side of a wooden ship, which would make it take on water and sink.
A canoe is a small, narrow boat that moves forward as you paddle, like the people in the picture.
Scientific name: brassica campestris
Cis forCantaloupe
Scientific name: cucumis melo
Canvas is a kind of heavy, plain woven fabric, usually made from cotton or linen. It is used to make sails, tents and other items that need to be made from strong fabric.
Artists like to stretch some canvas over a frame and use it to paint on. A piece of canvas prepared like this is also called a canvas, like the one in the picture.
A canyon is a large, deep path that has been cut through the landscape by a watercourse like a river over many years.




















