The outermost layer of the Earth is called:
a) Mantle
b) Inner core
c) Crust
d) Outer core
Which layer of the Earth is composed mostly of iron and nickel?
a) Crust
b) Mantle
c) Inner core
d) Lithosphere
What is the thickest layer of the Earth?
a) Crust
b) Mantle
c) Outer core
d) Inner core
Which layer of the Earth is responsible for generating the planet’s magnetic field?
a) Crust
b) Mantle
c) Outer core
d) Inner core
Which layer lies directly beneath the Earth’s crust?
a) Outer core
b) Inner core
c) Mantle
d) Asthenosphere
Which part of the Earth’s layers is in a liquid state?
a) Crust
b) Mantle
c) Inner core
d) Outer core
The Earth’s lithosphere consists of:
a) Inner core and outer core
b) Mantle and core
c) Crust and upper mantle
d) Mantle and asthenosphere
What is the primary composition of the Earth’s mantle?
a) Solid rock
b) Molten lava
c) Iron and nickel
d) Water and air
The Earth’s core is divided into how many parts?
a) One
b) Two
c) Three
d) Four
Which layer of the Earth is the hottest?
a) Crust
b) Mantle
c) Outer core
d) Inner core
Which layer of the Earth has convection currents that drive plate tectonics?
a) Crust
b) Lithosphere
c) Mantle
d) Inner core
What is the boundary between the crust and the mantle called?
a) Mohorovičić Discontinuity
b) Gutenberg Discontinuity
c) Lehmann Discontinuity
d) Asthenosphere
Which layer of the Earth is the most rigid and brittle?
a) Mantle
b) Lithosphere
c) Outer core
d) Inner core
What is the approximate thickness of the Earth’s crust?
a) 5-70 km
b) 100-300 km
c) 500-1000 km
d) 2500-4000 km
The Earth’s core is mainly composed of:
a) Iron and nickel
b) Silica and oxygen
c) Carbon and hydrogen
d) Sodium and potassium
Which layer of the Earth lies between the lithosphere and the lower mantle?
a) Inner core
b) Outer core
c) Asthenosphere
d) Crust
Which of the following best describes the Earth’s crust?
a) The densest layer
b) The thinnest layer
c) The hottest layer
d) The liquid layer
Which layer of the Earth is directly involved in the process of plate tectonics?
a) Inner core
b) Crust
c) Outer core
d) Lower mantle
The transition zone between the upper and lower mantle is approximately located at:
a) 100 km
b) 250 km
c) 410-660 km
d) 2000 km
Which seismic waves can travel through the liquid outer core?
a) P-waves
b) S-waves
c) Surface waves
d) Love waves
Which layer of the Earth is solid due to immense pressure, despite high temperatures?
a) Outer core
b) Inner core
c) Asthenosphere
d) Crust
Which type of rock primarily makes up the oceanic crust?
a) Granite
b) Basalt
c) Sandstone
d) Limestone
The movement of tectonic plates is driven by:
a) Earth’s gravity
b) Magnetic fields
c) Convection currents in the mantle
d) Ocean currents
What is the name of the rigid outer part of the Earth that includes the crust and upper mantle?
a) Lithosphere
b) Asthenosphere
c) Outer core
d) Inner core
Which layer contains the majority of Earth’s volume?
a) Crust
b) Mantle
c) Inner core
d) Outer core
Which layer of the Earth experiences the highest pressure?
a) Mantle
b) Outer core
c) Inner core
d) Crust
What is the primary reason Earth’s inner core remains solid despite extremely high temperatures?
a) High pressure
b) Magnetic forces
c) Low temperature
d) Lack of gravity
Which discontinuity separates the mantle from the outer core?
a) Mohorovičić Discontinuity
b) Gutenberg Discontinuity
c) Lehmann Discontinuity
d) Conrad Discontinuity
Which process causes heat transfer within the Earth’s mantle?
a) Radiation
b) Conduction
c) Convection
d) Reflection
