Question

D. Answer the following question:
1. How was earth formed?
2. What is a volcano?
3. How is coal formed? Mention its uses.
4. What is petroleum? What are its uses?​

Answer 1

Answer:

1, When the solar system settled into its current layout about 4.5 billion years ago, Earth formed when gravity pulled swirling gas and dust in to bec formed

2, A volcano is a rupture in the crust of a planetary-mass object, such as EaPetroleum products include transportation fuels, fuel oils for heating and electricity generation, asphalt and road oil, and feedstocks for making the chemicals, plastics,

Uses of coal

Coal has various purposes, the following are the uses of coal :

Thermal coal is used to produce electricity.

Coking coal is used in the production of steel.

Coal is also used to make silicon metal which is used to produce silicones and silanes,

4,Petroleum products include transportation fuels, fuel oils for heating and electricity generation, asphalt and road oil, and feedstocks for making the chemicals, plastics, and synthetic materials that are in nearly everything we use.

Explanation:

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Answer 2

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1. When the solar system settled into its current layout about 4.5 billion years ago, Earth formed when gravity pulled swirling gas and dust in to become the third planet from the Sun. Like its fellow terrestrial planets, Earth has a central core, a roc-ky mantle and a solid crust.
2. A volcano is an opening on the surface of a planet or moon that allows material warmer than its surroundings to escape from its interior. When this material escapes, it causes an eruptìon. Lava fountain at Kila‐uea Volcano.
3. Coal is mostly carbon with variable amounts of other elements; chiefly hydrogen, sulfur, oxygen, and nitrogen. Coal is formed when dead plant matter decays into peat and is converted into coal by the heat and pressure of deep burial over millions of years.
4. mineral oil that is found under the ground or sea and is used to make petrol, plastic and other types of chemical substances