a bolt of lightning flashes across the sky. a few seconds later, you hear a clap of thunder. why do you see…

a bolt of lightning flashes across the sky. a few seconds later, you hear a clap of thunder. why do you see the lightning before you hear the thunder? the sound waves from thunder are mechanical waves. they transfer energy through the vibration of particles of matter. the light waves from lightning are electromagnetic waves. they transfer energy through the vibration of electric and magnetic fields. unlike mechanical waves, electromagnetic waves do not need to travel through matter. they can even travel through the vacuum of outer space! they travel at the speed of light, which is much faster than the speed of mechanical waves. compare and contrast mechanical and electromagnetic waves. mechanical waves electromagnetic waves transfer energy travel at the speed of light can travel through matter can travel through outer space

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