sun
Definition
The star at the centre of the solar system that provides light and heat to Earth; sunlight; to expose oneself to sunlight
To remember it
Picture the bright, smiling face of a sun with its rays radiating out. This helps you remember 'sun' as the warm, cheerful star in the sky.
Examples
- A1
The sun rises in the east and sets in the west.
- A1
It is a beautiful sunny day today.
- A2
Do not look directly at the sun — it can damage your eyes.
- A2
They spent the afternoon sunbathing on the beach.
- B1
The sun's energy drives the water cycle, evaporating water from the oceans to form clouds that eventually return rain to the land.
- B1
Solar panels convert sunlight directly into electricity with increasing efficiency and declining cost.
- B2
Vitamin D deficiency is increasingly common in northern latitudes, where winter sunlight is too weak to trigger its synthesis in the skin.
- B2
The Copernican revolution placed the sun, not the Earth, at the centre of the solar system — a transformation in cosmology that had profound implications for theology, philosophy, and human self-understanding.
