Vocabulary Unit 4 – Inside Earth
1. Seismograph - a machine that measures earthquakes
2. Seismogram - the picture that this machine draw
3. Richter scale - a numerical scale for expressing the magnitude of an earthquake on the basis of seismograph oscillations
4. Focus - the exact location where an earthquake begins
5. Epicenter - the spot on the Earth’s surface immediately above where the earthquake hit
6. Shadow zone - the area of the earth that does not receive any direct seismic waves from an earthquake
7. Lithosphere – the crust and uppermost mantle
8. Asthenosphere - the upper layer of the earth's mantle, below the lithosphere
9. Plate Tectonics - a theory explaining the structure of the earth's crust and many associated phenomena as resulting from the interaction of rigid lithospheric plates that move slowly over the underlying mantle
10. Magma - hot fluid or semi fluid material below or within the earth's crust
11. Continental Drift –a theory explaining the gradual movement of the continents across the earth's surface through geological time
12. Convection currents – currents in the mantle caused by the movement of fluid by the tendency of hotter and therefore less dense material to rise, and cooler, denser material to sink under the influence of gravity, which consequently results in transfer of heat
13. Subduction - the sideways and downward movement of the edge of a plate of the earth's crust into the mantle beneath another plate
14. Faults - acrackintheearth'scrust
15. Rifting – to tear or force something apart
16. Earthquake - a sudden and violent shaking of the ground, sometimes causing great destruction, as a result of movements within the earth's crust or volcanic action
17. Volcano - a mountain or hill having a crater or vent through which lava, rock fragments, hot vapor, and gas erupt from the Earth's crust
Vocabulary Unit 4 – Inside Earth
1. Seismograph - a machine that measures earthquakes
2. Seismogram - the picture that this machine draw
3. Richter scale - a numerical scale for expressing the magnitude of an earthquake on the basis of seismograph oscillations
4. Focus - the exact location where an earthquake begins
5. Epicenter - the spot on the Earth’s surface immediately above where the earthquake hit
6. Shadow zone - the area of the earth that does not receive any direct seismic waves from an earthquake
7. Lithosphere – the crust and uppermost mantle
8. Asthenosphere - the upper layer of the earth's mantle, below the lithosphere
9. Plate Tectonics - a theory explaining the structure of the earth's crust and many associated phenomena as resulting from the interaction of rigid lithospheric plates that move slowly over the underlying mantle
10. Magma - hot fluid or semi fluid material below or within the earth's crust
11. Continental Drift –a theory explaining the gradual movement of the continents across the earth's surface through geological time
12. Convection currents – currents in the mantle caused by the movement of fluid by the tendency of hotter and therefore less dense material to rise, and cooler, denser material to sink under the influence of gravity, which consequently results in transfer of heat
13. Subduction - the sideways and downward movement of the edge of a plate of the earth's crust into the mantle beneath another plate
14. Faults - acrackintheearth'scrust
15. Rifting – to tear or force something apart
16. Earthquake - a sudden and violent shaking of the ground, sometimes causing great destruction, as a result of movements within the earth's crust or volcanic action
17. Volcano - a mountain or hill having a crater or vent through which lava, rock fragments, hot vapor, and gas erupt from the Earth's crust