Light PDF

LIGHT SLIDESMANIA.COM What is Light? Light is a form of energy. It allows you to see objects. Light comes from many different sources - natural or artificial. SLIDESMANIA.COM SLIDESMANIA.COM The sun is the main source of light on Earth and it is a natural light. The moon, on the other hand, gives lig...

LIGHT SLIDESMANIA.COM What is Light? Light is a form of energy. It allows you to see objects. Light comes from many different sources - natural or artificial. SLIDESMANIA.COM SLIDESMANIA.COM The sun is the main source of light on Earth and it is a natural light. The moon, on the other hand, gives light by reflecting the light from the sun. Uses of Light It helps us to see things. It helps plants make food and grow. Provides Vitamin D for the human body SLIDESMANIA.COM We use light energy to generate electricity. Objects around us Transparent Objects If you are able to see clearly through an object, it is allowing light to pass through it and is transparent. Opaque Objects If we cannot see through an object at all, it is an opaque object. Translucent Objects There are some objects through which we can see, but not very clearly. Such objects are known as translucent. SLIDESMANIA.COM SLIDESMANIA.COM Transparent Objects Examples SLIDESMANIA.COM Translucent Objects Examples SLIDESMANIA.COM Opaque Objects Examples SLIDESMANIA.COM Properties of Light Absorption Reflection Refraction Light can be absorbed or taken in, when it hits an object. Black objects absorb almost all the light that hits them while white objects absorb almost no light. An effect that occurs when light hits smooth, shiny surfaces. The light changes direction and a mirror image is reflected. An effect that occurs when light bends as it passes from one substance into another. The refracted light is bent as it passes from one substance into another. SLIDESMANIA.COM SLIDESMANIA.COM SLIDESMANIA.COM SLIDESMANIA.COM