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hazem Thu 03 Dec 2009, 10:07 amForms of energy:
1-sound energy 2-light energy
3-kinetic energy 4-potentialenergy
5-chemical energy 6-heat energy
7-magnetic energy
*All these forms of energy can't be seen but ,light energy can be seen
*visible spectrum:
it is the light energy that can be seen
*sources of light:
1-sun 2-moon 3-stars
4-electric lamp 5-kerosene
6-candle
*the sun is the main source of light energy
*the properties of light:
1-light travels in straight lines
2-light transmits through different materials
3-light reflection
4-light refraction
5-light separation (splitting)
1-sound energy 2-light energy
3-kinetic energy 4-potentialenergy
5-chemical energy 6-heat energy
7-magnetic energy
*All these forms of energy can't be seen but ,light energy can be seen
*visible spectrum:
it is the light energy that can be seen
*sources of light:
1-sun 2-moon 3-stars
4-electric lamp 5-kerosene
6-candle
*the sun is the main source of light energy
*the properties of light:
1-light travels in straight lines
2-light transmits through different materials
3-light reflection
4-light refraction
5-light separation (splitting)
