Question

Heyy ✔

Answer the attachment questions ✔✔

No copy allowed !⚠️

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Answer 1

• While going from earth's surface to its core, major changes occur due to which elements ?

→ While going from earth's surface to its core, major changes occur due to iron and nickel.

• Identity the given statement is right or wrong. Give reasons for your answer. " Pressure, density and temperature decreases as we move from the earth's surface to it's core."

→ Given sentence is incorrect because pressure, density and temperature increases as we move from earth's surface to it's core. As you go deeper into the earth , the force pressing down is greater that's why pressure is greater and temperature and density increases.

• Why is the inner core in solid state ?

→ The inner core is in solid state because it is made up of heavy materials like iron and nickel.

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Answer 2

$\longrightarrow\underline{\underline{\red{\sf{question 1: }}}}$

$1) \sf \: while \: going \: from \: the \: earth's \: \sf \: surface \\ \sf\: to \: its \: core.major \sf \: \: changes \: occur \\ \sf \: due \: to \: which \: elements?$

$\longrightarrow\underline{\underline{\red{\sf{solution}}}}$

$\sf the \: changes \: are:$

$\sf 1)as \: we \: reach \: the \: core \: we \: usually \\ \sf\: see \: iron \: and \: nickel.(NiFe)$

$\sf2)the \: other \: elements \: are \: oxygen , \: sulfur, \: and \: silicon.$

$\longrightarrow\underline{\underline{\red{\sf{question \: 2 : }}}}$

$2)\sf \: identify \: the \: given \: statement \: is \: right \: or \: wrong. \\ \sf \: pressure \: \: density \: and \: temperature \: decreses \: \\ \sf as \: we \: move \: from \: earths \: surface \: to \: the \: core?$

$\longrightarrow\underline{\underline{\red{\sf{solution}}}}$

$\implies \sf \: the \: earth \: gets \: hotter \: as \: we \: go \\ \sf\: from \sf \: earths \: surface \: to \: the \: core.$

$1) \sf \: as \: there \: is \: lot \: of \: metallic \: substances \: in \: the \: core$

$\longrightarrow\underline{\underline{\red{\sf{question \: 3: }}}}$

$\sf 3)why \: is \: the \: inner \: core \: in \: solid \: state?$

$\longrightarrow\underline{\underline{\red{\sf{solution}}}}$

$\implies \sf \: cause \: the \: core \: is \: made \: up \: of \: heavy \\ \sf \: \: substances \: like \: nickel \: and \: iron.$