Construct a scientific explanation based on evidence from rock strata for how the geologic time scale is used to organize Earth's 4.6-billion-year-old history. [Clarification Statement: Emphasis is on how analyses of rock formations and the fossils they contain are used to establish relative ages of major events in Earth's history. Examples of Earth's major events could range from being very recent (such as the last Ice Age or the earliest fossils of homo sapiens) to very old (such as the formation of Earth or the earliest evidence of life). Examples can include the formation of mountain chains and ocean basins, the evolution or extinction of particular living organisms, or significant volcanic eruptions.] [Assessment Boundary: Assessment does not include recalling the names of specific periods or epochs and events within them.]
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Q 1/30
Score 0
the solid, thin, outermost layer of Earth above the mantle. The layer where we live.
20
crust
Q 2/30
Score 0
the thickest layer, viscous (semi-solid) layer found between the Earth's crust and core
30
mantle
30 questions
Q.
the solid, thin, outermost layer of Earth above the mantle. The layer where we live.
1
20 sec
MS-ESS2-2
Q.
the thickest layer, viscous (semi-solid) layer found between the Earth's crust and core
2
30 sec
Q.
Crust that forms the continents. 35-40 km thick. Floats on top of the mantle. Thicker and less dense than oceanic crust. Composed of granite.
3
20 sec
Q.
Crust that forms the ocean floors. 7-10 km thick. Thinner and more dense than continental crust. Composed of basalt.
4
20 sec
Q.
liquid layer of the Earth's core beneath the mantle and surrounds the inner core
5
20 sec
Q.
densest and hottest layer of the Earth
6
20 sec
Q.
0 to 1,000 C
7
20 sec
Q.
around 1,000 to 3,500 C
8
20 sec
Q.
around 3,500 C to 7,000 C
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20 sec
Q.
around 7,000 C
10
20 sec
Q.
mostly oxygen and silicon and the rocks granite and basalt
11
20 sec
Q.
magnesium, aluminum, silicon
12
20 sec
Q.
LIQUID iron and nickel
13
20 sec
Q.
SOLID iron and nickel
14
20 sec
Q.
around 2 to 3 g/cm3
15
20 sec
Q.
temperature increases
16
20 sec
Q.
density increases
17
20 sec
Q.
pressure increases
18
20 sec
Q.
3-25 miles / 5-100 km
19
20 sec
Q.
1,800 miles / 3,000 km
20
20 sec
Q.
1,400 miles / 2,200 km
21
20 sec
Q.
800 miles / 1200km
22
20 sec
Q.
created by Earth's core
23
20 sec
Q.
The lowest portion of mantle, a zone of rigid rock
24
20 sec
Q.
Layer of the earth directly below the Earth's crust underneath tectonic plates; always moving
