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Earth’s structure & plate boundaries

Examine Earth’s internal layers, tectonic plate boundaries and the rock cycle. Review suitability for your learners before teaching.

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Worksheet StudioPractice pack · Ages 13-15

Earth’s structure & plate boundaries

Take your time. Show your thinking.

1. What process breaks rocks down in situ at Earth’s surface through rain, frost and plant roots before erosion transports the fragments: weathering or subduction?
What process breaks rocks … · Earth’s structure & plate …
2. What is the point on Earth’s surface directly above the underground focus (hypocentre) of an earthquake called: the epicentre or the crater?
What is the point on Earth… · Earth’s structure & plate …
3. Is Earth’s inner core solid or liquid despite its extreme temperature, due to immense pressure?
Is Earth’s inner core soli… · Earth’s structure & plate …
4. Which type of crust is denser and thinner, causing it to subduct beneath continental crust: oceanic crust or continental crust?
Which type of crust is den… · Earth’s structure & plate …
5. When slow-cooling magma solidifies deep underground (such as granite), does it form large visible crystals or no crystals?
When slow-cooling magma so… · Earth’s structure & plate …
6. Which two metallic elements make up most of Earth’s dense core: iron and nickel, or sodium and potassium?
Which two metallic element… · Earth’s structure & plate …
7. What do we call the horseshoe-shaped belt around the Pacific Ocean where many earthquakes and volcanoes occur: the Ring of Fire or the Mid-Atlantic Ridge?
What do we call the horses… · Earth’s structure & plate …
8. Which seismic body waves travel fastest through the Earth and can pass through both solids and liquids: P-waves (primary) or S-waves (secondary)?
Which seismic body waves t… · Earth’s structure & plate …
9. What type of plate boundary occurs where two plates slide horizontally past each other (such as the San Andreas Fault): transform or divergent?
What type of plate boundar… · Earth’s structure & plate …
10. What type of tectonic plate boundary occurs where two plates move apart and new oceanic crust forms: divergent or convergent?
What type of tectonic plat… · Earth’s structure & plate …
11. Which thick layer lies directly beneath Earth’s crust and makes up most of Earth’s volume: the mantle or the outer core?
Which thick layer lies dir… · Earth’s structure & plate …
12. What generates Earth’s global magnetic field (magnetosphere): convection of liquid metal in the outer core, or ocean tides?
What generates Earth’s glo… · Earth’s structure & plate …

12 questions · Seed 104733 · Age guidance, not curriculum certification

View the answer key

Worksheet StudioAnswer key · Ages 13-15

Earth’s structure & plate boundaries

Answers and reasoning. Review before teaching.

1. What process breaks rocks down in situ at Earth’s surface through rain, frost and plant roots before erosion transports the fragments: weathering or subduction?
Weathering
Weathering breaks rock down in place; erosion moves the weathered material.
2. What is the point on Earth’s surface directly above the underground focus (hypocentre) of an earthquake called: the epicentre or the crater?
Epicentre
The epicentre is the surface point vertically above the earthquake focus.
3. Is Earth’s inner core solid or liquid despite its extreme temperature, due to immense pressure?
Solid
Crushing pressure at the centre of the Earth keeps the iron-nickel inner core solid.
4. Which type of crust is denser and thinner, causing it to subduct beneath continental crust: oceanic crust or continental crust?
Oceanic crust
Basaltic oceanic crust (≈3.0 g/cm³) is denser than granitic continental crust (≈2.7 g/cm³).
5. When slow-cooling magma solidifies deep underground (such as granite), does it form large visible crystals or no crystals?
Large visible crystals
Slow cooling gives mineral crystals time to grow large (coarse-grained).
6. Which two metallic elements make up most of Earth’s dense core: iron and nickel, or sodium and potassium?
Iron and nickel
Earth’s outer liquid core and inner solid core are composed mainly of iron and nickel.
7. What do we call the horseshoe-shaped belt around the Pacific Ocean where many earthquakes and volcanoes occur: the Ring of Fire or the Mid-Atlantic Ridge?
Ring of Fire
The circum-Pacific Ring of Fire is rimmed by active subduction zones.
8. Which seismic body waves travel fastest through the Earth and can pass through both solids and liquids: P-waves (primary) or S-waves (secondary)?
P-waves (primary)
Compressional P-waves are the fastest seismic waves and travel through both solid rock and liquid core.
9. What type of plate boundary occurs where two plates slide horizontally past each other (such as the San Andreas Fault): transform or divergent?
Transform
Transform boundaries involve horizontal shear motion without creating or destroying crust.
10. What type of tectonic plate boundary occurs where two plates move apart and new oceanic crust forms: divergent or convergent?
Divergent
At divergent boundaries (such as mid-ocean ridges), plates pull apart and magma rises to solidify.
11. Which thick layer lies directly beneath Earth’s crust and makes up most of Earth’s volume: the mantle or the outer core?
The mantle
The silicate mantle extends from the base of the crust down to about 2,900 km.
12. What generates Earth’s global magnetic field (magnetosphere): convection of liquid metal in the outer core, or ocean tides?
Convection of liquid metal in the outer core
The geodynamo is driven by convective motion of electrically conducting liquid iron in the outer core.

12 questions · Seed 104733 · Age guidance, not curriculum certification

Worksheet StudioPractice pack · Ages 13-15

Earth’s structure & plate boundaries

Take your time. Show your thinking.

1. What process breaks rocks down in situ at Earth’s surface through rain, frost and plant roots before erosion transports the fragments: weathering or subduction?
What process breaks rocks … · Earth’s structure & plate …
2. What is the point on Earth’s surface directly above the underground focus (hypocentre) of an earthquake called: the epicentre or the crater?
What is the point on Earth… · Earth’s structure & plate …
3. Is Earth’s inner core solid or liquid despite its extreme temperature, due to immense pressure?
Is Earth’s inner core soli… · Earth’s structure & plate …
4. Which type of crust is denser and thinner, causing it to subduct beneath continental crust: oceanic crust or continental crust?
Which type of crust is den… · Earth’s structure & plate …
5. When slow-cooling magma solidifies deep underground (such as granite), does it form large visible crystals or no crystals?
When slow-cooling magma so… · Earth’s structure & plate …
6. Which two metallic elements make up most of Earth’s dense core: iron and nickel, or sodium and potassium?
Which two metallic element… · Earth’s structure & plate …
7. What do we call the horseshoe-shaped belt around the Pacific Ocean where many earthquakes and volcanoes occur: the Ring of Fire or the Mid-Atlantic Ridge?
What do we call the horses… · Earth’s structure & plate …
8. Which seismic body waves travel fastest through the Earth and can pass through both solids and liquids: P-waves (primary) or S-waves (secondary)?
Which seismic body waves t… · Earth’s structure & plate …
9. What type of plate boundary occurs where two plates slide horizontally past each other (such as the San Andreas Fault): transform or divergent?
What type of plate boundar… · Earth’s structure & plate …
10. What type of tectonic plate boundary occurs where two plates move apart and new oceanic crust forms: divergent or convergent?
What type of tectonic plat… · Earth’s structure & plate …
11. Which thick layer lies directly beneath Earth’s crust and makes up most of Earth’s volume: the mantle or the outer core?
Which thick layer lies dir… · Earth’s structure & plate …
12. What generates Earth’s global magnetic field (magnetosphere): convection of liquid metal in the outer core, or ocean tides?
What generates Earth’s glo… · Earth’s structure & plate …

12 questions · Seed 104733 · Age guidance, not curriculum certification

Worksheet StudioAnswer key · Ages 13-15

Earth’s structure & plate boundaries

Answers and reasoning. Review before teaching.

1. What process breaks rocks down in situ at Earth’s surface through rain, frost and plant roots before erosion transports the fragments: weathering or subduction?
Weathering
Weathering breaks rock down in place; erosion moves the weathered material.
2. What is the point on Earth’s surface directly above the underground focus (hypocentre) of an earthquake called: the epicentre or the crater?
Epicentre
The epicentre is the surface point vertically above the earthquake focus.
3. Is Earth’s inner core solid or liquid despite its extreme temperature, due to immense pressure?
Solid
Crushing pressure at the centre of the Earth keeps the iron-nickel inner core solid.
4. Which type of crust is denser and thinner, causing it to subduct beneath continental crust: oceanic crust or continental crust?
Oceanic crust
Basaltic oceanic crust (≈3.0 g/cm³) is denser than granitic continental crust (≈2.7 g/cm³).
5. When slow-cooling magma solidifies deep underground (such as granite), does it form large visible crystals or no crystals?
Large visible crystals
Slow cooling gives mineral crystals time to grow large (coarse-grained).
6. Which two metallic elements make up most of Earth’s dense core: iron and nickel, or sodium and potassium?
Iron and nickel
Earth’s outer liquid core and inner solid core are composed mainly of iron and nickel.
7. What do we call the horseshoe-shaped belt around the Pacific Ocean where many earthquakes and volcanoes occur: the Ring of Fire or the Mid-Atlantic Ridge?
Ring of Fire
The circum-Pacific Ring of Fire is rimmed by active subduction zones.
8. Which seismic body waves travel fastest through the Earth and can pass through both solids and liquids: P-waves (primary) or S-waves (secondary)?
P-waves (primary)
Compressional P-waves are the fastest seismic waves and travel through both solid rock and liquid core.
9. What type of plate boundary occurs where two plates slide horizontally past each other (such as the San Andreas Fault): transform or divergent?
Transform
Transform boundaries involve horizontal shear motion without creating or destroying crust.
10. What type of tectonic plate boundary occurs where two plates move apart and new oceanic crust forms: divergent or convergent?
Divergent
At divergent boundaries (such as mid-ocean ridges), plates pull apart and magma rises to solidify.
11. Which thick layer lies directly beneath Earth’s crust and makes up most of Earth’s volume: the mantle or the outer core?
The mantle
The silicate mantle extends from the base of the crust down to about 2,900 km.
12. What generates Earth’s global magnetic field (magnetosphere): convection of liquid metal in the outer core, or ocean tides?
Convection of liquid metal in the outer core
The geodynamo is driven by convective motion of electrically conducting liquid iron in the outer core.

12 questions · Seed 104733 · Age guidance, not curriculum certification