Depends on where you live...
Yes, "colorful fireworks" is the subject of the sentence "Colorful fireworks lit up in the sky." In this context, the phrase "colorful fireworks" is what the sentence is about, while "lit up in the sky" describes what the subject is doing.
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One could look up some companies that sell fireworks, because they have lots of pictures that promote their products. Some websites are Fireworks, Big Fireworks, Black Cat Fireworks, Fireworks Arcade, TNT Fireworks and US Fireworks. Besides that, one could look up pictures of fireworks at different websites featuring stock footage. Some examples of these who have beautiful pictures of fireworks right now are: Foto Search, Go Graph, Shutter Stock and iStock Photo and Stock Footage For Free.
chemical change
When fireworks explode, chemical energy stored in the fireworks compounds is rapidly converted to thermal energy, causing the fireworks to heat up and ignite. This thermal energy creates heat and light, resulting in the colorful displays we see in the sky. Some of the energy is also converted into sound energy as the fireworks explode.
Yes, "colorful fireworks" is the subject of the sentence "Colorful fireworks lit up in the sky." In this context, the phrase "colorful fireworks" is what the sentence is about, while "lit up in the sky" describes what the subject is doing.
Fireworks!
Some of the companies that sell fireworks in Florida include Phantom Fireworks, Galaxy Fireworks, Sky King Fireworks, TNT Fireworks and Four Seasons Fireworks.
Fireworks are different colors when they explode in the sky because of the different chemical compounds used in the fireworks. Each compound emits a specific color when it burns, creating the colorful display we see during a fireworks show.
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Disney's Celebrate America 4th of July concert in the sky fireworks spectacular