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| The strong lower part of the mantle is called ______________________________. |
mesosphere |
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angela Thu, 10 Mar 2011 01:21:03 GMT |
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| Will seismic waves travel faster through through a solid or a liquid. Why? |
They travel faster through a solid, because they travel faster through denser materials. |
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angela Wed, 09 Mar 2011 22:37:21 GMT |
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| What are seismic waves? |
vibrations from an earthquake |
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angela Wed, 09 Mar 2011 22:37:21 GMT |
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| What do scientists use to study the earth's interior? |
seismic waves |
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angela Wed, 09 Mar 2011 22:37:21 GMT |
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| Why do less dense compounds make up the earth's crust, while more dense compounds make up the core? |
Gravity pulls the more dense compounds to the core. |
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angela Wed, 09 Mar 2011 22:37:21 GMT |
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| How much of the Earth's mass is made up of crust? |
Less than 1%. |
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angela Wed, 09 Mar 2011 22:31:12 GMT |
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| How much of the Earth's mass is made up by the mantle? |
67% |
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angela Wed, 09 Mar 2011 22:31:12 GMT |
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| How much of the Earth's mass is made up by the core? |
33% |
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angela Wed, 09 Mar 2011 22:31:12 GMT |
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| Why do scientists look to the ocean floor to research the mantle? |
Magma from active volcanoes flows onto the ocean floor. |
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angela Wed, 09 Mar 2011 22:31:12 GMT |
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| The mantle is composed of more of the element _________________ than the crust. |
magnesium |
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angela Wed, 09 Mar 2011 22:27:19 GMT |
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| Oceanic crust is denser than the continental crust because it contains more of which 3 elements? |
iron
calcium
magnesium |
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angela Wed, 09 Mar 2011 22:27:19 GMT |
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| What 3 elements make up most of the Earth's crust? |
oxygen
silicon
aluminum |
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angela Wed, 09 Mar 2011 22:27:19 GMT |
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| List the 3 layers of the Earth, based on their composition. |
crust, mantle, and core |
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angela Wed, 09 Mar 2011 22:27:19 GMT |
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| A substance composed of 2 or more elements is a(n) ____________________. |
compound |
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angela Wed, 09 Mar 2011 22:20:13 GMT |
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| What are the 2 kinds of crust that the tectonic plates may contain? |
oceanic and continental |
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angela Wed, 09 Mar 2011 22:20:13 GMT |
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| What element makes up most of the Earth's core? |
iron |
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angela Wed, 09 Mar 2011 22:20:13 GMT |
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| Large pieces of the lithosphere that move around on the asthenosphere are called _____________________. |
tectonic plates |
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angela Wed, 09 Mar 2011 22:20:13 GMT |
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| The outermost rigid layer of the Earth is called _______________________. |
lithosphere |
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angela Wed, 09 Mar 2011 22:15:23 GMT |
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| The layer of slowly flowing rock in the mantle is called ______________________. |
asthenosphere |
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angela Wed, 09 Mar 2011 22:15:23 GMT |
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| The liquid layer of the core is called ______________________________. |
outer core |
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angela Wed, 09 Mar 2011 22:15:23 GMT |
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| The solid layer of the core is called __________________________. |
inner core |
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angela Wed, 09 Mar 2011 22:15:23 GMT |
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