When measuring the scale distance, be sure the measure from the previous line. Researchers call it the inner core, which is 70% as wide as the moon. The structure of the earth the earth is made up of four distinct layers. Use this quiz to study for the earths interior quiz. The moho is not located at a uniform depth, but about 10 kilometers 6 miles below the seafloor and about 35 kilometers 22 miles beneath the surface of continents. Explain how scientists believe the earths four layers were formed. Use the layers panel to examine layers and show or hide the content associated with each layer. Kristin bartee focus on inquiry the student will investigate the different layers of earths interior and get an idea of the differences and composition of each layer. The crust silicate rocks, primarily granite and basalt oceanic crust mostly basalt continental crust igneous, metamorphic, and sedimentary rocks. Configuration of surface of earth is a product of exogenic and endogenic processes in earth. The layers of the atmosphere are from outside to inside.
Some of these layers are made up of even more layers and theyre always on the move. The fact that the earth is not a homogeneous, structure less body has been realized since the time of isaac. Structure of earths interior is fundamentally divided into three layers crust, mantle and core. Earth s layers are made of different mixtures of elements. The core is divided into a liquid outer core and a solid inner core.
First, write the name of the layer of the earth that each line is pointing to for letters ae. The inner structure of the earth is described by the authors on the basis of systematic processing and evaluation of the traditional and newer theories and conceptions. Using a pencil, draw lines and label the layers of the earth onto the register tape based on the data table below and the scale 1 cm 100 km. Earth has layers that have specific conditions and composition. Scientists divide the mantle into the upper and lower mantle. They are, in order from the exterior to the interior the crust, the mantle, the outer core, and the inner core. Earth is made up of several different layers, each of which has unique. Some layers may be organized into nested groups with a parent layer.
The mantle is much hotter and has the ability to flow. Click here to take a journey to the center of the earth. It also provides a useful, and surprising, demonstration of the relative volumes of the earths layers. It is interesting to know how scientists have gathered information about these layers and what are the characteristics of each of these layers. Nevada reno this diagram shows us how thin the crust is in relation to the rest of the earth, along with relative sizes of the mantle and core. The changes in seismic velocity between different layers causes refraction owing to snells law, like light bending as it. Powered by create your own unique website with customizable templates.
Inner core red outer core redorange lower mantle orange middle mantle light orange 2. In the previous chapter, you have noted that the earthforming materials have been distributed in the form of layers from the crust to the core. The earth is made of four layers, the inner core, the outer core, the mantle, and the crust. Temperature, density, and viscosity ability to flow. Other layers may be in groups with no parent layer. The composition and structure of earth physical geography.
The layering of earth has been inferred indirectly using the time of travel of refracted and reflected seismic waves created by earthquakes. Structural geology of the earths interior earth sciences. Lesson content overview students will look at models depicting each layer of the earths interior and decide which layer is. The composition of earth the earth is divided into several layers with different composition and physical properties. The inner core is in the centre and is the hottest part of the earth. The major layers of the earth, starting from its center, are the inner core, the outer core, the mantle, and the crust. Draw the layers of the earth in your journal use a full page label each layer.
This edition of the earth science reference tables should be used in the classroom beginning in the 201112 school year. If we think of the earth as a baseball, the crust is like a postage stamp stuck on a baseball. Scientists know that the core is metal for a few reasons. Ppt the layers of the earth powerpoint presentation. Tables 4 and 5 contain the layer depth information for the. Finally color each layer of the earth according to whether it is.
Continental drift continental drift is a theory developed in 1912 by alfred wegener that states that earths continents move on the surface. Earths layers are made of different mixtures of elements. The diagram below shows the layers of the earths interior. The earths layers foldable marcias science teaching ideas. It is the endogenic processes that determine the interior configuration of earth. The earth is approximately 4,000 miles 6,400 kilometers from surface to center. How much do you know about earth layers and density. This slide show is a minilesson on the layers of the earth. Learn about the structure of the earths interior crust, mantle and core and composition of its different layers. How is the earths mantle like a peanut butter sandwich. The density of earths surface layers is much less than the overall density of the planet, as calculated from the planets rotation. Meteors that at times reach the earth are an important source.
The temperature in the earths interior is so high that it can even melt any tool used for drilling. The earths interior three major layers three major layers inside the earth interior are the crust, mantle and the core. Notice also how the chemical composition of the earth varies with depth. The core does not allow shear waves to pass through it, while the speed of travel seismic velocity is different in other layers.
Earths surface, near the coremantle boundary, and in sinking lithospheric slabs. Hence, this lesson is about the interior of the earth. The crust makes up less than 1 percent of earth by mass, consisting of oceanic crust and continental. For the love of physics walter lewin may 16, 2011 duration. Moonquakes of very low energy are caused by land tides produced by the pull of earths gravity, and, from analysis of moonquake data, scientists believe the moon has two layers. You may have heard that ogres are like onions because they have many layers. The lightest materials make up the outermost layer. Earths interior how do geologists learn about earths interior. The crust is a silicate solid, the mantle is a viscous molten rock, the outer core. At the heart of our planet lies a solid iron ball, about as hot as the surface of the sun. The major constituent elements of the mantle are silicon and magnesium and hence it is also termed as sima. The hard, brittle crust extends from earths surface to the socalled mohorovicic discontinuity, nicknamed the moho. These layers formed as the building blocks of earth, known as planetesimals, collided and collapsed under their own gravity around 4.
Students color, cut, and assemble this interactive foldable, and then glue into their interactive science notebooksjournals. Earths interior layers of the earth inferred by earthquake waves esrt page 10 determine the following. The outer core and inner core are even hotter with pressures so great you would be squeezed into a ball smaller than a marble if you were able to go to. The top layer, which is what we stand on is the crust, next comes the mantle and finally the core. Earthquake waves used to find earths interior layers it is impossible for drilling equipment.
The crust is the layer that you live on, and it is the most widely studied and understood. Nearly 84% of the earth s volume and 67% of the earth s mass is occupied by the mantle. Interestingly, there are two cores noted the inner and the outer. Then write the thickness of the layers in blanks 14. If the surface layers are less dense than average, then the interior must be denser than average. Fill out the small squares with the information for each of the main layers of the earth, using your textbook.
The inner earth is composed of three main parts, sometimes called the layers of the earth. The chemical and mechanical classifications for the upper layers of the earth are illustrated in. Rare diamond reveals earths interior is all wet by becky oskin a battered diamond that survived a trip from hell confirms a longheld theory. The interior of the earth can reveal the nature of lithosphere. Different layers of the earth its interior, structure and composition.
The student will investigate the different layers of earth s interior and get an idea of the differences and composition of each layer. Use the earth science reference tables label each layer of earths interior with the. Fill out the small squares with the information for. The thickest part of the crust is under mountain ranges. The layers that appear in the pdf are based on the layers created in the original application. Lateral variations in seismic wave speeds have been documented in all major layers of the. This fact also restricts deep drilling, thus causing hindrance to direct observation of the materials of the earths interior. With its immense heat energy, the inner core is like the engine room of the earth. Earths layers the internal structure of the earth earths layers kelvinsong, from wikimedia commons the interior of the earth is made up of several concentric layers of which the crust, the mantle, the outer core and the inner core are significant because of their unique physical and chemical properties. The earths interior is composed of four layers, three solid and one liquidnot magma but molten metal, nearly as hot as the surface of the sun.
The cover has a picture of the earth and the inside page allows students to use the word bank to label the layers of the earth. Earths interior is generally divided into three major layers. This foldable is a great addition to a middle school earth science unit on earths interior or the layers of the earth. Meteorsmeteors are bits of interplanetary material falling through earths atmosphere and heated to incandescence by friction. This layers of the earth foldable is great for an interactive science notebook, but can also be used as a stand alone book. Which of these layers is responsible for earths magnetic field. Earths interior answer key displaying top 8 worksheets found for this concept some of the worksheets for this concept are answer key, inside earth work, name earths interior work 1 altizio, earths crust and interior, beneath our feet the four layers of earth, structure of the earth work, earth reading comprehension work, layers of the earths atmosphere work. Describe characteristics composition of each layer color oceanic crust. Direct sources deep ocean drilling reveals humongous information through analysis of materials collected at different depth. Layers of earths interior by mighty in middle school tpt. A knowledge of earths interior is essential for understanding plate tectonics.