Light energy questions!!! HELP!?

Question

so i have to do a poster.. about light energy and im having trouble finding the answers to the questions that we have to answer! so could u please help me! here are the ?'s

What is the natural source of light energy?

Where are 2 places where light energy is produced?

What are 2 examples of ways that light energy can be used?

What are 2 examples of a method or machine where light energy is converted into another type of energy?

Answer 1

Hard to interpret exactly what you mean with yor questions.

The sun is a natural source of light energy...anything thats have a warm temerature will start transmit light, the human eye cant see more than a certian kind of light, a certain wave lenght, thats what we call regular white light...so you can say heat is a natural source of light energy....light can't be "produced" ,it can only be transformed from other forms of energy.....like from electicity, heat etc.

two places?,,,,assume you mean a bulb or flourescent bulb or an LED light or a regular candle, these four convert energy into light in four different ways.....

Light can be used to "light up" a room, or be used to activate a chemical process, for example at dentist they harden the fillings with light Ultra Violet light UL), or regular light is used to activate the film in a old regular photo camera (photo means light), its well known that you cant take a photo shot in total darkness (except with IR camera)....all green plants need light to grow.....for the photo syntesis.....

light can be converted into electricity in a solar panel....

In a terrarium with snakes or lizards red lights are used to make a give comfortable temperature. red light is not so hot as white light. Infra red (IR) lights are not visible for human eye without special "glasses" or photo film for cameras, everything that's "breathing", animals, humans or plants transmits infra red light, which can be detected with IR camera or other equipment, and are for example used for detection of life from a special camera in an aircraft or satellite. These pix can be shot at night in total darkness aswell.

Answer 2

Natural Source: The sun.

Two places where light energy is produced: path of the sun & a result of combustion

Two ways light can be used as energy: Photovoltaics, photosynthesis

Two examples of light energy conversion: PV solar (solar panels for electricity), the earth converts the full spectrum light from the sun to Infrared.