Earth's Interior - Instruction/Assignment

Which phrases are true of only the mantle? Check all that apply. A- made of three layers B- has a tarry layer C- made of two layers D- has a molten outer layer E- has a solid outer layer

A, B, & E

Which statements about Earth's crust are true? Check all that apply. A- The crust includes soil, rock, and water. B- There are three different kinds of crust. C- The crust is thickest under the ocean. D- The ocean crust is made of young rocks. E- The ocean crust is denser than continental crust.

A, D, & E

Which sources do scientists use to study the interior of Earth? Check all that apply. A- Earth's orbit B- core samples C- sea level D- earthquakes E- S waves F- rock composition

B, D, E, & F

A scientist uses a special instrument to measure the depth of Earth's crust. He measures one location that is 65 kilometers deep. Where is this section of crust most likely located? A- below a vast ocean B- below a deep canyon C- below a mountain range D- below an island volcano

C

Fill in the blanks to complete the passage. Geologists can use BLANK waves to learn about Earth's interior. P waves travel faster than S waves. S waves travel through solids only, which tells geologists that the BLANK core is liquid. Geologists call the outer, solid area of Earth the crust; the next layer is the BLANK. Finally, at the very center, is the core.

Seismic Outer Mantle

Use the drop-down menus to select the part of Earth best described by each phrase. 1- May help create Earth's magnetic field. DROP DOWN 2- Can be thick or thin, depending on location. DROP DOWN 3- Made of molten metal. DROP DOWN 4- The location of Earth's plates DROP DOWN

1- 4 2- 1 3- 4 4- 1

DROP DOWN provide us with actual samples rocks from inside Earth. They are considered DROP DOWN evidence of the Earth-s interior. DROP DOWN are a form of energy that travels through or across Earth and helps scientists infer what is inside Earth. They are DROP DOWN evidence.

Core samples Direct Seismic waves Indirect

inner core Asthenosphere outer core lower mantle

inner core- is under great pressure and is solid Asthenosphere- has a tarry consistency outer core- made of liquefied metal lower mantle- is under the asthenosphere

Why are the properties of the asthenosphere important? Check all that apply. A- The asthenosphere keeps Earth's crust from getting too hot. B- Earth's plates float on the denser asthenosphere. C- The depth of the asthenosphere keeps pressure on Earth's core. D- The asthenosphere allows Earth's crust to move. E- The asthenosphere creates Earth's magnetic field.

B & D

Earth's lithosphere is made of slabs called plates. The movement within Earth's interior causes plates to move. How the plates behave affects the shape of Earth's crust. Which statement describes the movement of plates 1 and 2? A- They are moving toward each other. B- They are rubbing past each other. C- They are moving away from each other. D- They are rising and sinking.

C

You have learned that different types of rocks are found in Earth's layers. Their composition affects their densities. What can you conclude based on the information in the table? A- The rocks in the crust are the most dense. B- The rocks in the upper mantle are the most dense. C- The rocks in the lower mantle are the most dense. D- The rocks in the core are the most dense.

C

Which event would most likely occur if Earth did not retain the heat from its formation? A- The inner core would liquefy. B- Seismic waves would move the crust. C- The Earth's magnetic field would disappear. D- The asthenosphere and outer core would solidify.

D

Use the drop-down menu to choose the correct answer to each question. When going from a depth of 5,000 meters in Earth to a depth of 2,500 meters, the temperature would DROP DOWN When going from a depth of 4,000 meters in Earth to a depth of 6,000 meters, the pressure would DROP DOWN

Decrease Increase

How do earthquakes help geologists understand Earth's interior? During an earthquake, geologists use a machine called a DROP DOWN to study seismic waves. P waves can pass through both solid and molten rock, but S waves can pass only through DROP DOWN rock.

seismograph solid