The rabbit is a small animal found in many parts of the world. In Australia, rabbits are the single worst introduced pest. Rabbits make good pets, if they are properly looked after.

Photo by Joshua Davis

A raccoon is a medium sized animal native to North America, although they have been spread to Europe by people. They prefer to live in forests. Raccoons like to sleep during the day and hunt at night. They eat insects, plants and small animals. A baby raccoon is called a kit.

Photo by Harlequeen

A race is where two or more people or animals try and take the shortest possible time to travel a set distance. The winner is the fastest. There are lots of different kinds of race. The picture is of some people racing each other on bicycles, but there are also horse races, dog races, running races, car races and of course anything that can move can be raced.

Photo by Team Traveller

A stereo is a device for playing recorded music from tapes, CDs, or listening to broadcasted music on the radio.

Photo by Freakapotimus

Scientific name: raphanus sativus

Radishes are an edible root vegetable. They come in a variety of colors, with the most common being red and white. The root of the radish is crisp and has a sharp peppery flavour, with some radish varieties being hotter than others.

Radishes are most commonly used in salads, and can be preserved by pickling them. Radish leaves and seeds are also edible but not as many people eat them as eat the root.

Photo by Dawn Endico

Clouds are made out of tiny droplets of water. As a cloud gets bigger and bigger, the droplets join up and become bigger too. Eventually the droplets get too big and heavy to stay up in the air, and they fall as rain.

Photo by Laffy4k

Rainbows happen when the sun shines through a very fine spray of water, like rain in the air or the spray from a garden hose or even from a waterfall.

The rainbow is colourful because as sunlight travels through the water spray, it splits into a spectrum of colours. All the colours you see in a rainbow are there all the time in normal light, but they are mixed up together so you only see white light.

You can also see the colours of the rainbow by shining light through a prism.

Photo by Listentoreason

A rainforest is an area with very high rainfall. They are usually in the warmer parts of the world. Rainforests have an amazing amount of plants and animals living in them, around half of the world's plant and animal species are found in rainforests.

Photo by Randomskk

Raisins are dried sultana grapes, and in many countries they are just called sultanas.

Raisins can be added to cakes and puddings or just eaten by themselves. They are an excellent lunchbox snack.

Photo by Flirty Kitty

A rake is a set of metal or plastic teeth on the end of a long stick that is used for raking up large bits of trash on the ground. Rakes are most often used for raking fallen leaves into piles when they fall in autumn.

Photo by Terren in Virginia