Sundials are a device that uses the sun to tell the time. A sundial is made up of a horizontal dial plate with numbers on it, and a vertical upright called a gnomon. As the sun moves, the shadow cast by the gnomon moves around the dial plate, and you can read the time off what numbers it points to.
Some sundials use a shaft of light rather than a shadow, and the dial plate may be curved not flat. Some sundials have enough information on the dial plate to be able to tell the date as well as the time.
Scientific name: helianthus annuus
Sunflowers are a tall flowering plant that loves sunny weather. It usually grows to about 2 metres tall, but some varieties have grown as tall as 8 metres. A sunflower head will ripen to be full of seeds which have many uses. The seeds are black and white striped and have a hard shell. When the shell is removed, the seed can be eaten raw or roasted. Birds are very fond of sunflower seeds. The seed can also be pressed for oil that is used for cooking.
The sunflower in the picture has a bee on it.
Sis forSunglasses
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Sunglasses are worn over your eyes so you don't get dazzled by the sun. Some people wear them because they think it makes them look better.
Sunset is the time of day when the sun goes down below the horizon. The sky goes from dark to coloured with lots of shades of pink and orange and red and then to deep purple before the sun goes completely below the horizon and it is night time.
The time just after sunset before it gets completely dark is called dusk. The opposite of sunset is sunrise.
