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VocabularyFill in the blank with the term that best completes the sentence.

6.10A

1 The is the layer of rock between Earth’s crust and core.

2 is the theory that explains how large pieces of Earth’s outermost layer move and change shape.

6.10D

3 is the bending of rock layers due to stress.

4 A(n) is a vent or fissure in Earth’s surface through which magma and gases are expelled.

5 A(n) ____________________ is a movement or trembling of the ground that is caused by a sudden release of energy when rocks move along a fault.

Key ConceptsChoose the letter of the best answer.

6.10A

6 Evelyn is making a model of Earth to show how the physical layers correspond to the compositional layers. Which of the following should Evelyn show in her model? (Hint: Step 1. List the physical layers of Earth. Step 2. List the compositional layers of Earth. Step 3. Identify the statement that correctly relates the physical and compositional layers.)

A The physical layers exactly match the compositional layers.

B The crust is the only compositional layer not included in the physical layers.

C The physical layer of the asthenosphere includes the compositional layer of the crust.

D The physical layers of the inner core and outer core form a single compositional layer.

Unit 7 Review

Unit 7 Review

Answers

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131131Unit 7 The Dynamic Earth

North AmericanPlate

SouthAmericanPlate

AfricanPlate

CaribbeanPlate

Pacific Plate

Scotia PlateAntarctic Plate

Juande Fuca

Plate

NazcaPlate

CocosPlate

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Unit 7 Review continued

6.10A

7 Which of the following is a major difference between Earth’s inner core and outer core?

A The inner core is liquid, and the outer core is solid.

B The inner core is solid, and the outer core is liquid.

C The inner core is gas, and the outer core is solid.

D The inner core is solid, and the outer core is gas.

6.10A

8 Earth can be divided into five layers: the lithosphere, the asthenosphere, the mesosphere, the outer core, and the inner core. Which properties are used to make these divisions?

A compositional properties C chemical properties

B physical properties D elemental properties

6.10C, 6.10D

9 The illustration below shows some of Earth’s tectonic plates. The arrows indicate the direction in which some of these plates are moving.

Based on the direction of the Cocos Plate, what type of plate boundary likely exists between the Cocos Plate and the Caribbean Plate? (Hint: Step 1. Analyze the likely relative motions of the Caribbean Plate and the Cocos Plate. Step 2. Relate the relative motions of plates to the type of plate boundary.)

A transform boundary C convection boundary

B divergent boundary D convergent boundary

Answers

450 Unit 7 The Dynamic Earth

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132132 Unit 7 The Dynamic Earth

Name

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Gridded ResponseWrite your answer in the boxes, then bubble in the corresponding number in the grid below.

6.2E

10 The table below identifies the relationship between the strength of earthquakes and how often earthquakes happen.

Worldwide Frequency of Earthquakes of Different Magnitudes

Descriptor Magnitude Average number annually

great 8.0 and higher 1major 7.0–7.9 17strong 6.0–6.9 134moderate 5.0–5.9 1,319light 4.0–4.9 about 13,000minor 3.0–3.9 about 130,000very minor 2.0–2.9 about 1,300,000

Approximately how many earthquakes classified as moderate to great happen each year?

Critical ThinkingAnswer the following questions in the space provided.

6.10D

11 Explain how a convergent boundary is different from a transform boundary. Then, name one thing that commonly occurs along both convergent boundaries and transform boundaries.

Unit 7 Review

.0 0 0 0 0 0

1 1 1 1 1 1

2 2 2 2 2 2

3 3 3 3 3 3

4 4 4 4 4 4

5 5 5 5 5 5

6 6 6 6 6 6

7 7 7 7 7 7

8 8 8 8 8 8

9 9 9 9 9 9

Answers

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133133Unit 7 The Dynamic Earth

AB

C

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6.10D

12 Explain how forces from tectonic plate movement can build these three types of mountains: folded mountains, fault block mountains, and volcanic mountains.

ESSENTIAL QUESTIONSLessons 1, 2, 3, 4, and 5

Connect

Answer the following questions in the space provided.

6.10A, 6.3B

13 The diagram shows the five physical layers of Earth.

Identify the physical layers A, B, and C. Describe the relationship between these layers and how this relationship is important to understanding the function of the different layers of Earth’s interior.

Unit 7 Review continued

Answers

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134134 Unit 7 The Dynamic Earth