SOUND
Sound comes from vibrations. These vibrations create sound waves (NOT STRAIGHT LINES) which move through mediums such as air and water before reaching our ears.
Our ears vibrate in a similar way to the original source of the vibration, allowing us to hear many different sounds.
LIGHT
What is light?
Light is a form of energy which our sense of sight can detect. It is made of electro-magnetic radiation and travels in straight lines.
What is the speed of light?
It is about 300,000 kilometres per second. Nothing travels faster than light.
Depending on the light that can pass through an object, they can be:
When a light wave strikes an object, it can be absorbed, reflected, or refracted by the object.
REFLECTION
REFRACTION
ABSORPTION
DIFFERENCE BETWEEN HEAT AND TEMPERATURE
States of matter related to heat
EVAPORATION
EXPANSION
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