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WorksheetsSection 2.1 Concept Check
Total questions: 10
Worksheet time: 7mins
Earth and the rest of the solar system are thought to have originated about 4.5 billion years ago from what?
Clouds of dust
Dead organic matter
Heat
Preexisting planets
True or False: Substances of low density tend to float on substances of high density.
True
False
During the formation of early Earth, the light surface material cooled into a(n)
Inner core
Thin crust
Upper mantle
Outer core
The swirling motions of the liquid material in the are responsible for producing the Earth's magnetic field.
Continental crust
Lithosphere
Outer core
Inner mantle
Identify a feature of the layers of Earth's internal surface.
The mantle is extremely thin and is like a rigid skin floating on top of the core
The characteristics of the crust differ greatly between the oceans and the continents
The crust is very hot, almost near the melting point of the rocks
The core is the best-known layer of Earth
Astrophysicists estimate that a great cosmic explosion occurred about 13.7 billion years ago called the that eventually led to the formation of the Earth and the other planets
(a)
During the formation of the early Earth, materials settled within the planet according to their , defined as the mass of a given volume of a substance
Density
Specific Gravity
Thermal Conductivity
Viscosity
When the young Earth was molten, the densest material .
flowed toward the center of the planet
floated toward the surface
remained stationary at the location of its formation
moved into the exosphere of the Earth's atmosphere
The core of Earth is mostly .
(a)
The layer outside Earth's core is called the .
(a)
