Earth's Structure and Layers: Interactive Quizzes for Year 6 Science

Question 1

What is the boundary between the crust and the mantle called?

Accepted Answer

Mohorovičić discontinuity

Answer

Gutenberg discontinuity

Answer

Asthenosphere

Answer

Mesosphere

Question 2

Which property is NOT characteristic of the Earth's crust?

Accepted Answer

Less dense than the mantle

Answer

Thinnest layer

Answer

Solid rock composition

Answer

Contains oceans and continents

Question 3

What is the approximate thickness of the Earth's mantle?

Accepted Answer

2,900 km

Answer

5-10 km

Answer

6,371 km

Answer

12,742 km

Question 4

What is the main component that makes up the Earth's inner core?

Accepted Answer

Iron

Answer

Nickel

Answer

Magnesium

Answer

Silicon

Question 5

How does the density of the Earth's layers change from the crust to the core?

Accepted Answer

Increases

Answer

Decreases

Answer

Remains the same

Answer

Alternates

Question 6

What causes the movement of tectonic plates?

Accepted Answer

Convection currents in the mantle

Answer

Gravity

Answer

Volcanic eruptions

Answer

Earthquakes

Question 7

Which of the following is a feature found on the Earth's surface that is formed by volcanic activity?

Accepted Answer

Volcanoes

Answer

Mountains

Answer

Oceans

Answer

Plateaus

Question 8

Which rock type is abundant in the Earth's mantle?

Accepted Answer

Peridotite

Answer

Igneous

Answer

Sedimentary

Answer

Metamorphic

Question 9

Which Earth layer is responsible for generating our planet's magnetic field?

Accepted Answer

Outer Core

Answer

Crust

Answer

Mantle

Answer

Inner Core

Question 10

Millions of years ago, what was the name of the supercontinent that existed?

Accepted Answer

Pangea

Answer

Gondwana

Answer

Laurasia

Answer

Rodinia

Question 11

Which layer of the Earth has the highest density?

Accepted Answer

Inner Core

Answer

Crust

Answer

Mantle

Answer

Outer Core

Question 12

Which layer of the Earth is the hottest?

Accepted Answer

Inner Core

Answer

Crust

Answer

Mantle

Answer

Outer Core

Question 13

What is the predominant mineral found in the Earth's crust?

Accepted Answer

Feldspar

Answer

Quartz

Answer

Calcite

Answer

Granite

Question 14

Imagine the Earth as a layered structure like an onion. Which of the following shows the correct order of the Earth's layers from the outermost layer to the innermost layer?

Accepted Answer

Crust, Mantle, Core

Answer

Core, Mantle, Crust

Answer

Mantle, Crust, Core

Answer

Crust, Core, Mantle

Question 15

Deep inside the Earth is the innermost layer called the:

Accepted Answer

Core

Answer

Crust

Answer

Mantle

Answer

Atmosphere

Question 16

The Earth's crust is mostly made of:

Accepted Answer

Rocks and minerals

Answer

Water and gases

Answer

Molten rock

Answer

Sediments

Question 17

The layer of the Earth that moves the plates on the surface is the:

Accepted Answer

Mantle

Answer

Crust

Answer

Outer core

Answer

Inner core

Question 18

The boundary between the crust and the mantle is called the:

Accepted Answer

Mohorovičić discontinuity

Answer

Gutenberg discontinuity

Answer

Wadati-Benioff zone

Answer

Asthenosphere

Question 19

The mantle is:

Accepted Answer

Partly solid and partly liquid

Answer

Solid and rigid

Answer

Liquid and flowing

Answer

Gas and dust

Question 20

Which layer of the Earth is the thickest?

Accepted Answer

Mantle

Answer

Crust

Answer

Core

Question 21

Which layer of the Earth is the thickest and contains most of its mass?

Accepted Answer

Mantle

Answer

Crust

Answer

Core

Answer

Atmosphere

Question 22

What is the outermost, thin layer of the Earth called?

Accepted Answer

Crust

Answer

Mantle

Answer

Core

Question 23

What is the name of the boundary that separates the crust from the mantle?

Accepted Answer

Mohorovičić discontinuity

Answer

Gutenberg discontinuity

Answer

Ringwood discontinuity

Question 24

What is a major cause of earthquakes?

Accepted Answer

Movement of giant pieces of the Earth's surface called tectonic plates

Answer

Volcanic eruptions

Answer

Lightning strikes

Question 25

Which layer of the Earth is responsible for creating the Earth's magnetic field?

Accepted Answer

Core

Answer

Crust

Answer

Mantle

Question 26

Which layer of the Earth is the thickest?

Accepted Answer

Mantle (2,900 km)

Answer

Crust (5-70 km)

Answer

Core (2,200 km)

Question 27

What is the hottest layer of the Earth?

Accepted Answer

Core (5,200°C)

Answer

Crust (1000°C)

Answer

Mantle (2,000-3,700°C)

Question 28

Which layer of the Earth is mostly solid?

Accepted Answer

Crust

Answer

Middle mantle

Answer

Outer core

Question 29

What is the main substance found in the Earth's crust?

Accepted Answer

Silicate rocks

Answer

Iron and nickel

Answer

Water

Question 30

Which layer of the Earth is believed to create the Earth's magnetic field?

Accepted Answer

Outer core

Answer

Crust

Answer

Mantle

Question 31

What is the name for the boundary between the crust and mantle?

Accepted Answer

Mohorovičić discontinuity (Moho)

Answer

Gutenberg discontinuity

Answer

Asthenosphere

Question 32

Which layer of the Earth is involved in plate tectonics?

Accepted Answer

Crust and upper mantle

Answer

Lower mantle

Answer

Outer core

Question 33

Which layer of the Earth is the thickest and accounts for most of its mass?

Accepted Answer

Mantle

Answer

Crust

Answer

Core

Question 34

What is the primary material found in the Earth's crust?

Accepted Answer

Rock

Answer

Iron

Answer

Water

Question 35

Which layer of the Earth has a solid and rigid nature?

Accepted Answer

Crust

Answer

Mantle

Answer

Core

Question 36

What type of rock is commonly found in the oceanic crust?

Accepted Answer

Igneous

Answer

Sedimentary

Answer

Metamorphic

Question 37

Which option is not a layer of the Earth?

Accepted Answer

Atmosphere

Answer

Crust

Answer

Mantle

Question 38

Which layer of the Earth is thought to create our planet's magnetic field?

Accepted Answer

Core

Answer

Crust

Answer

Mantle

Question 39

Which layer of the Earth is the outermost and thinnest?

Accepted Answer

Crust

Answer

Mantle

Answer

Core

Question 40

Approximately how thick is the Earth's crust?

Accepted Answer

10-100 km

Answer

1,000-3,000 km

Answer

6,000-8,000 km

Question 41

Which layer of the Earth is where volcanoes and earthquakes happen?

Accepted Answer

Crust

Answer

Mantle

Answer

Core

Question 42

What is the mantle mostly made of?

Accepted Answer

Rock

Answer

Metal

Answer

Gas

Question 43

Which of the following describes the Earth's core?

Accepted Answer

Liquid and metallic

Answer

Solid and rocky

Answer

Gaseous and hot

Question 44

What is the name of the boundary between the crust and mantle?

Accepted Answer

Mohorovičić discontinuity

Answer

Gutenberg discontinuity

Answer

Lehmann discontinuity

Question 45

Which layer of the Earth creates Earth's magnetic field?

Accepted Answer

Core

Answer

Crust

Answer

Mantle

Question 46

How does the temperature of the Earth's layers change from the crust to the core?

Accepted Answer

Increases gradually

Answer

Decreases gradually

Answer

Increases then decreases

Question 47

Which layer of the Earth is 'plastic-like' and allows the large slabs of rock called tectonic plates to move?

Accepted Answer

Asthenosphere

Answer

Crust

Answer

Outer core

Answer

Inner core

Question 48

Which layer of the Earth is the thickest?

Accepted Answer

Mantle

Answer

Crust

Answer

Core

Question 49

What is the primary material found in the Earth's crust?

Accepted Answer

Rock

Answer

Iron

Answer

Water

Question 50

Which layer of the Earth is responsible for the movement of tectonic plates?

Accepted Answer

Mantle

Answer

Crust

Answer

Core

Question 51

Which process is responsible for the formation of mountains?

Accepted Answer

Plate collision

Answer

Erosion

Answer

Volcanism

Question 52

Which layer of the Earth is composed of liquid iron?

Accepted Answer

Outer core

Answer

Crust

Answer

Mantle

Question 53

What is the primary source of energy that drives the movement of the Earth's tectonic plates?

Accepted Answer

Heat from the core

Answer

Solar radiation

Answer

Gravitational force

Question 54

Which layer of the Earth is the thickest, making up around 84% of its volume?

Accepted Answer

Mantle

Answer

Crust

Answer

Core

Question 55

What is the primary component of the Earth's crust, contributing to its solid and rigid nature?

Accepted Answer

Silicon

Answer

Iron

Answer

Nickel

Question 56

Which of the following is NOT a characteristic of the mantle, the thick layer between the crust and core?

Accepted Answer

Solid throughout

Answer

Hot and dense

Answer

Contains convection currents

Question 57

Within the mantle, what is the name of the region that is partially molten and allows for the movement of tectonic plates?

Accepted Answer

Asthenosphere

Answer

Crust

Answer

Core

Question 58

Which process, resulting from heat transfer within the mantle, is responsible for the movement of the Earth's tectonic plates?

Accepted Answer

Convection currents

Answer

Rotation of the Earth

Answer

Gravitational forces

Question 59

What type of rock is formed when magma cools and solidifies?

Accepted Answer

Igneous rock

Answer

Sedimentary rock

Answer

Metamorphic rock

Question 60

Which layer of the Earth is the thickest?

Accepted Answer

Mantle

Answer

Crust

Answer

Core

Question 61

Which layer of the Earth is made of solid rock?

Accepted Answer

Crust

Answer

Mantle

Answer

Outer core

Question 62

What is the name of the layer of the Earth that is mostly made up of molten iron?

Accepted Answer

Outer core

Answer

Inner core

Answer

Mantle

Question 63

Which of the following is a characteristic of the Earth's mantle?

Accepted Answer

Convecting

Answer

Solid

Answer

Liquid

Answer

Dense

Question 64

What is the main reason for the Earth's magnetic field?

Accepted Answer

Rotation of the Earth's core

Answer

Convection currents in the mantle

Answer

Solar radiation

Answer

Atmospheric circulation