WebWhat is light? Part of Science Light and sound Light sources A source of light makes light. The Sun and other stars, fires, torches and lamps all make their own light and so are... WebApr 22, 2008 · Volume is dependent on how hard the air is pushed through. Sound travels more slowly than light. Sound waves travel at the same speed, but vibrate in different ways. Some vibrate quickly and have a high frequency or pitch, while others vibrate slowly and give a lower pitch. This clip is from: Primary Focus Science. First broadcast: 22 April 2008.

Light Waves - BBC Bitesize

WebSounds Sounds are made when objects vibrate. The vibration makes the air around the object vibrate and the air vibrations enter your ear. You hear them as sounds. You cannot always see the... WebSound Sound is a powerful way of setting the scene and creating mood and atmosphere. Sound can be very symbolic and communicate key themes and character features to an audience. A repeated... inch to awg conversion

Light - GCSE Physics (Single Science) Revision - BBC Bitesize

WebLight is what helps us see things. It can come from different places, like the Sun, or fire, or from electricity in lamps and torches. Light is all around us, like the sunlight in this... Web6 rows · Light travels as transverse waves and faster than sound. It can be reflected, refracted and ... WebSound waves are longitudinal waves that must pass through a medium, such as air. Echoes are reflections of sounds. The frequency of ultrasound is above 20 kHz. Ultrasound is useful for cleaning.... inch to awg calculator