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Science - Earth Crus
6th Grade Science - Earth Crust Layers
| Question | Answer |
|---|---|
| What are convection currents? | This type of current is the transfer of heat within a fluid. |
| What causes a convection Current? | TBD |
| What causes convection currents in the Earth's mantle? | Heat from the Earths core and from the mantle itself cause convection currents in the mantle. |
| The movement of energy from a warmer object to a cooler object is called? | Heat Transfer |
| Heat is transferred by direct contact of particles of matter is called? | Conduction |
| What is the hypothesis of continental drift? | Wegener's hypothesis was that originally all the continents were joined together in a single land mass and over time the land mass broke apart and the continents drifted away. |
| Why did scientist reject Wegener's theory for nearly half a century? | Because they thought he was crazy and that he did not provide enough evidence. |
| All the continents were once joined together in a supercontinent called? | Pangea |
| What is the definition of Pangea? | "All lands" |
| What is a fossil? | a trace of an ancient organism preserved in rock. |
| Wegener's theory that the continents slowly moved over the Earth's surface became known as? | Continental Drift |
| What are the four main layers of the Earth from the surface to the very middle? | Crust, Mantle, Outer Core, and Inner Core. |
| How does temperature and pressure change as you travel DOWN through Earth's layers? | Temperature gets hotter and hotter and pressure gets stronger. |
| Which layers do scientists think is responsible for creating the Earth's magnetic field? | Oceanic crust |
| Compare and Contrast the outer and inner core | The outer core and inner core are both round but the outer core is a ring of molten rock where the inner core is a solid mass. |
| What are three types of heat transfer? | Radiation, Convection, Conduction |
| The original supercontinent called pangea existed about how many years ago? | 300 Million! |
| What kind of land features did Wegener provide as scientific evidence to support his theory? | Mountain Ranges, Coal Fields. |
| What kind of fossil evidence did Wegener provide to support his theory of continental drift? | examples where fossils of exactly the same prehistoric species were distributed where you would expect them to be if there had been Continental Drift |
| What evidence of climate change did Wegener provide to support his theory of continental drift? | Evidence of climate change such as glacier deposits in hotter climates |
| What are two types of evidence geologists use to learn about Earth's interior? | 1. Direct evidence from rock samples 2.indirect evidence from seismic waves.Siesmic Waves |
| A rock that makes up much of the ocean floor | Basalt |
| The force pushing on a surface or area | Pressure |
| The layer made up of liquid iron and nickel | Outer core |
| The uppermost part of the mantle | Lithosphere |
| A rock that makes up the core of the continents | Crust |
| Outer rind of rock | Granite |
| A wave produced by an earthquake | Seismic Wave |
| Soft layer of rock in the mantel | Asthenosphere |
Created by:
tonilynne1
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