Question 1

The Earth's magnetic field is caused by&#10;A) magnetic dynamo.&#10;B) nuclear current.&#10;C) photons.&#10;D) silicon spin.

Accepted Answer

The Earth's magnetic field is primarily caused by a magnetic dynamo, which is the motion of molten iron and other metals in the Earth's outer core. These movements generate electric currents, which in turn produce magnetic fields.

Question 2

The process of ______________ creates motion inside the Earth.&#10;A) conduction&#10;B) radiation&#10;C) convection&#10;D) decay

Accepted Answer

Convection creates motion inside the Earth as it involves the movement of heat and material within the Earth's mantle, driving plate tectonics and volcanic activity.

Question 3

This is the more scientific name for the process of continental drift:&#10;A) subduction&#10;B) mountain building&#10;C) rifting&#10;D) plate tectonics

Accepted Answer

Plate tectonics is the scientific term that encompasses the theory of continental drift, describing the movement of the Earth's lithosphere on the more fluid asthenosphere beneath it, leading to the drifting of continents, formation of mountains, earthquakes, and other geological phenomena.

Question 4

Mountain ranges on the Earth are formed by&#10;A) converging plates.&#10;B) impacts from space.&#10;C) rifting of the crust.&#10;D) build up of sediments from erosion.

Accepted Answer

Mountain ranges are primarily formed by the movement of tectonic plates, especially through the process of convergence, where two plates move towards each other, leading to the folding, faulting, and uplift of the Earth's crust.

Question 5

When the crust stretches and breaks it is called _____.

Accepted Answer

The answer of When the crust stretches and breaks it...

Question 6

When pieces of the crust slide under each other it is called _____.

Accepted Answer

The answer of When pieces of the crust slide under...

Question 7

Olivine is sometimes carried to the surface of the Earth by volcanoes.

Accepted Answer

Olivine is a common mineral in the Earth's subsurface, and it can be brought to the surface by volcanic eruptions, often found in basaltic lavas.

Question 8

Rocks on the Earth are primarily silicates.

Accepted Answer

Silicates, minerals composed of silicon and oxygen, make up the majority of the Earth's crust, forming the primary constituents of most rocks.

Deck 37: The Earth As a Terrestrial Planet