Cello and violins

Many different instruments make up an orchestra. There are violins, flutes, trumpets, and many others. But there’s a less well-known instrument in every orchestra too: the cello.

The cello is a big instrument. It looks like a very large violin. The violin is small enough to be held up in a musician’s arms, but the cello is too big for that. The cellist (the musician who plays the cello) keeps the instrument between his or her legs. A special piece called the endpin stays on the floor.

Like the violin, the cello has four strings. The strings are played with a tool called a bow. The cellist rubs the bow against the strings to make a sound. Cello strings are longer and thicker than a violin’s strings. This is why the cello sounds deeper and lower than a violin.

Seas

The Earth is made up of mostly water. Places with water are called bodies of water. Oceans, lakes, and rivers are all bodies of water.

An ocean is the largest body of water. It is made of salt water. People cannot drink salt water. Oceans have animals like sharks, octopus, whales, and fish.

A lake is smaller than an ocean. It is made of fresh water. People can drink fresh water. Many people like to swim in lakes. Lakes have fish, too.

A river is a body of water that is always moving. The water flows in one direction. Like lakes, rivers have fresh water. Rivers also have fish.

Oceans, lakes, and rivers are all very important on Earth. Bodies of water store the Earth’s water, are fun for people, and provide a home to many water animals