Which statement best explains the theory of plate tectonics?(1 point)

Question

Responses

Earth’s crust is formed by the magma that rises in the mantle.
Earth’s crust is formed by the magma that rises in the mantle.

Earth’s core consists of rock plates that float on top of the mantle.
Earth’s core consists of rock plates that float on top of the mantle.

Earth’s mantle is made of rock plates that move across the crust.
Earth’s mantle is made of rock plates that move across the crust.

Earth’s crust is composed of rock plates that float on top of the mantle.

Answer 1

The statement that best explains the theory of plate tectonics is:

Earth’s crust is composed of rock plates that float on top of the mantle.

This reflects the concept that the Earth's lithosphere (the crust and the uppermost part of the mantle) is divided into tectonic plates that move and interact with each other.

Answer 2

Which example shows the effects of tension in the Earth’s plates?(1 point)
Responses

the mid-Atlantic Ridge splitting Iceland
the mid-Atlantic Ridge splitting Iceland

an earthquake along the San Andreas Fault
an earthquake along the San Andreas Fault

Andes Mountains forming by subduction
Andes Mountains forming by subduction

Eurasian plate forming the Himalayas

Answer 3

The example that shows the effects of tension in the Earth’s plates is:

the mid-Atlantic Ridge splitting Iceland.

At the mid-Atlantic Ridge, tectonic plates are moving apart (divergent boundary), which creates tension as the plates pull away from each other, leading to the formation of new crust.

Answer 4

Use the map of the Ring of Fire to answer the question.



Which is correct about the Ring of Fire shown on the map?

(1 point)
Responses

It represents locations where plate movement does not occur.
It represents locations where plate movement does not occur.

Volcanoes are found on its rim.
Volcanoes are found on its rim.

Earthquakes occur far from its rim.
Earthquakes occur far from its rim.

It is located around the rim of the Atlantic Ocean.

Answer 5

The correct statement about the Ring of Fire shown on the map is:

Volcanoes are found on its rim.

The Ring of Fire is a horseshoe-shaped zone in the Pacific Ocean characterized by a high level of seismic activity, including numerous volcanoes and earthquakes, primarily along the edges of tectonic plates.

Answer 6

Question
Which describes a positive impact of volcanoes?(1 point)
Responses

They contribute to the reduction of land on the surface.
They contribute to the reduction of land on the surface.

They produce new gases that form part of the atmosphere.
They produce new gases that form part of the atmosphere.

They release materials that form fertile soils.
They release materials that form fertile soils.

They carry magma that covers a large surface area of the Earth.
They carry magma that covers a large surface area of the Earth.

Answer 7

The statement that describes a positive impact of volcanoes is:

They release materials that form fertile soils.

Volcanic eruptions can enrich the soil with minerals and nutrients, making it highly fertile and suitable for agriculture.

Answer 8

What causes tsunamis?(1 point)
Responses

a gust of strong wind along the coast
a gust of strong wind along the coast

living things swimming near the coast
living things swimming near the coast

disturbance on the ocean floor
disturbance on the ocean floor

storms in the middle of the ocean

Answer 9

The correct response that explains what causes tsunamis is:

disturbance on the ocean floor.

Tsunamis are typically caused by underwater disturbances, such as earthquakes, volcanic eruptions, or landslides, that displace a large volume of water, generating powerful waves that can travel across oceans.

Answer 10

What is the definition of physical weathering?(1 point)
Responses

the expansion and contraction of rock due to changes in temperature
the expansion and contraction of rock due to changes in temperature

the formation of new minerals from rock due to chemical reactions
the formation of new minerals from rock due to chemical reactions

the transport of rock and sediments by wind and water
the transport of rock and sediments by wind and water

the breakdown of rock and sediments into smaller pieces

Answer 11

The definition of physical weathering is:

the breakdown of rock and sediments into smaller pieces.

Physical weathering involves the mechanical properties of rocks breaking down without altering their chemical composition, often due to processes like freeze-thaw cycles, thermal expansion, or abrasion.