The Development of Earth

To understand Earth’s early atmosphere, scientists look to which of the following?

• Mars and Venus

• Jupiter and Saturn

• Ceres and Pluto

• volcanoes and earthquakes

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NGSS.HS-ESS1-6

NGSS.HS-ESS2-4

After the Earth formed about 4.6 billion years ago, several processes released heat that kept the surface a molten pool of metals. Which of the following IS NOT one of those processes?

• radiation from the solar winds

• unstable isotopes

• chemical differentiation

• impact accretion

• bombardment of materials from space

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NGSS.HS-ESS1-6

Earth’s inner core is composed almost exclusively of:

• iron with a small amount of nickel in the solid phase

• iron and nickel in the liquid phase

• oxygen and silicon-based rocks

• liquid magma (lava)

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NGSS.MS-PS1-1

Earth's outer core remains liquid because it experiences lower ____________ than the inner core.

• pressure

• temperature

• density

• mass

The ______________ is the thickest layer in Earth’s interior.

• mantle

• inner core

• outer core

• crust

The _________________ is the upper portion of the mantle. It comes in direct contact with the rigid rock layer overlying Earth’s surface, called the ________________.

• asthenosphere, lithosphere

• geosphere, pedosphere

• atmosphere, hydrosphere

• cryosphere, biosphere

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NGSS.HS-ESS1-5

The oldest rock ever found on Earth was recently discovered along in:

• Canada.

• Russia.

• China.

• Egypt.

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NGSS.HS-ESS1-5

NGSS.HS-ESS1-6

Earth's earliest atmosphere was composed primarily of:

• hydrogen and helium gases.

• oxygen and nitrogen gases.

• carbon dioxide and methane gases.

• ozone and hydrochloric acid gases.

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NGSS.HS-ESS1-6

Many scientists propose that Earth’s “first atmosphere” developed from the release of gases from _____________ into the atmosphere.

• volcanoes

• earthquakes

• meteoroids

• rivers

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NGSS.HS-ESS1-6

The Earth contains two types of crust:

• continental and oceanic

• liquid and solid.

• inner and outer.

• moist and dry

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NGSS.HS-ESS1-5

NGSS.HS-ESS2-1