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WorksheetsEarth's Layers and Plates
Total questions: 55
Worksheet time: 45mins
How have scientists been able to study Earth's mantle?
In some places, Earth's crust thins enough to see mantle.
Earth's surface heat warms the crust turning it into mantle.
Cooling crust material becomes mantle over time.
In some places, mantle rock pushes to Earth's surface.
The Earth's thin shell of hard rock is called the crust.
Identify each layer - #15.
Lithosphere
Mantle
Crust
Asthenosphere
Which layer is the densest?
Z
X
W
V
Which layer is composed mostly of iron?
Z
Y
V
X
Which layer is the thinnest?
V
Z
Y
X
Which layer is the solid, inner core?
W
V
X
Y
Which layer is the liquid outer core?
Y
Z
V
W
Are layers X and Z cooler than V?
Yes
No
They are the same temperature.
Which layer has convection currents where the hot, less dense magma rises and the cooler, dense magma sinks?
inner core
outer core
mantle
crust
How can you describe the “heat flow” or convection currents in the Earth’s mantle?
When magma is heated by the core, it becomes dense and sinks. When magma cools, it becomes dense and rises.
The heat flow in the mantle bubbles up under the surface causing the surface to be warm.
When magma is heated by the core, it becomes less dense and rises. When magma cools, it becomes dense and sinks.
Heat flow comes up through volcanoes making the Earth warm enough to sustain life.
What is the hot, convecting layer that is located directly under the crust?
mantle
crust
inner core
outer core
Which layer is represented by the number 4?
crust
inner core
outer core
mantle
Which layer of the Earth is represented by the number 2?
crust
outer core
mantle
inner core
Which layer of the Earth is represented by the number 3?
crust
inner core
mantle
outer core
Which layer is represented by the number 1?
outer core
inner core
mantle
crust
