humanities

Question 1

What are the three main layers of the Earth?

Answer 1

The crust, the mantle, and the core.

Question 2

True or False: The Earth’s crust is the thickest layer.

Answer 2

False.

Question 3

Fill in the blank: The Earth’s outer core is primarily composed of ______.

Answer 3

liquid iron and nickel.

Question 4

What is the approximate thickness of the Earth’s crust?

Answer 4

5 to 70 kilometers.

Question 5

Multiple choice: Which layer of the Earth is solid and composed mainly of silicate rocks?

Answer 5

Crust.

Question 6

What is the state of matter of the Earth’s inner core?

Answer 6

Solid.

Question 7

True or False: The mantle is less dense than the crust.

Answer 7

False.

Question 8

Fill in the blank: The mantle extends from the base of the crust to about ______ kilometers deep.

Answer 8

2,900.

Question 9

What is the primary component of the Earth’s inner core?

Answer 9

Solid iron.

Question 10

Multiple choice: Which layer of the Earth is responsible for generating the Earth’s magnetic field?

Answer 10

Outer core.

Question 11

What is the temperature range of the Earth’s inner core?

Answer 11

Approximately 4,000 to 5,500 degrees Celsius.

Question 12

True or False: The Earth’s crust is made up of tectonic plates.

Answer 12

True.

Question 13

Fill in the blank: The Earth’s mantle is composed of ______ rocks.

Answer 13

silicate.

Question 14

What is the asthenosphere?

Answer 14

A semi-fluid layer within the upper mantle that allows tectonic plates to move.

Question 15

Multiple choice: Which layer of the Earth is the least dense?

Answer 15

Crust.

Question 16

What is the primary role of the Earth’s outer core?

Answer 16

To generate the magnetic field.

Question 17

True or False: The Earth’s crust is thicker under mountains than under oceans.

Answer 17

True.

Question 18

Fill in the blank: The transition zone between the mantle and the outer core is known as the ______.

Answer 18

Gutenberg Discontinuity.

Question 19

What is the approximate depth of the mantle?

Answer 19

About 2,900 kilometers.

Question 20

Multiple choice: The Earth’s inner core is primarily made of which element?

Answer 20

Iron.

Question 21

What is the Mohorovičić discontinuity?

Answer 21

The boundary between the Earth’s crust and the underlying mantle.

Question 22

True or False: The Earth’s outer core is solid.

Answer 22

False.

Question 23

Fill in the blank: The lithosphere includes the ______ and the upper part of the mantle.

Answer 23

crust.

Question 24

What is the primary reason for the movement of tectonic plates?

Answer 24

Convection currents in the mantle.

Question 25

Multiple choice: Which layer of the Earth is primarily liquid?

Answer 25

Outer core.

Question 26

What is the primary characteristic of the Earth's crust?

Answer 26

It is the outermost layer.

Question 27

True or False: The mantle is less viscous than the outer core.

Answer 27

False.

Question 28

Fill in the blank: The depth of the outer core is approximately ______ kilometers.

Answer 28

2,200.

Question 29

What is the composition of the Earth's crust?

Answer 29

Mainly silicate minerals.

Question 30

Multiple choice: The boundary between the mantle and the inner core is called what?

Answer 30

Lehmann Discontinuity.

Question 31

What is the primary function of the Earth's core?

Answer 31

To generate heat and contribute to the magnetic field.

Question 32

True or False: The Earth's crust is primarily composed of basalt and granite.

Answer 32

True.

Question 33

Fill in the blank: The Earth's core is divided into the outer core and the ______.

Answer 33

inner core.

Question 34

What is the thickness of the Earth's outer core?

Answer 34

About 2,200 kilometers.

Question 35

Multiple choice: Which layer of the Earth can flow and deform over time?

Answer 35

Mantle.

Question 36

What is the primary cause of earthquakes?

Answer 36

Movement of tectonic plates along faults.

Question 37

True or False: The Earth's mantle is primarily solid.

Answer 37

True.

Question 38

Fill in the blank: The Earth's lithosphere consists of the crust and the upper ______.

Answer 38

mantle.

Question 39

What is the difference between the lithosphere and asthenosphere?

Answer 39

The lithosphere is rigid, while the asthenosphere is semi-fluid.

Question 40

Multiple choice: Which layer of the Earth is responsible for plate tectonics?

Answer 40

Lithosphere.

Question 41

What is the approximate temperature of the Earth's outer core?

Answer 41

About 4,000 to 5,000 degrees Celsius.