How do the mass and the density of the mantle compare with the
The mantle’s mass is greater than the core’s mass, but with less density.
The mantle’s mass and its density are greater than that of the core.
The mantle’s mass is less than the core’s mass, but with greater density.
The mantle’s mass and its density are less than that of the core.
Select the best answer. Which statement is true about all convection currents?(1 point)
It is made possible by heat and pressure.
It results to formation of valleys and hills.
It causes earthquakes.
It happen in all layers of the Earth.
Which can be excluded from the list of events caused by the flow of thermal energy inside the Earth?(1 point)
Responses
thunderstorms
valley formations
volcanic eruptions
earthquakes
Which statement is correct about the properties that define a particular kind of mineral?(1 point)
A particular mineral is defined by neither its chemical composition nor crystalline structure.
A particular mineral is defined only by its chemical composition.
A particular mineral is defined by its chemical composition and crystalline structure.
A particular mineral is defined only by its crystalline structure.
What is physical weathering? (1 point)
Responses
the movement of rock from one place to another
the transformation of rocks into some other type of materials
the breaking of rock into smaller pieces from nonchemical processes
the building up of rock that has been brought from other places
How can plants cause weathering? (1 point)
Sprouting seeds and growing roots can cause rocks to break.
Chemical reactions in plants change rocks and break them into smaller pieces.
Plants need water, and water can weather rocks.
Plants attract animals, and animals can burrow into rocks.
Which action can help slow down the process of chemical weathering?(1 point)
using less water in industrial areas
removing clay to avoid weakening rocks
burning less fossil fuel
removing iron oxide to avoid breaking down rocks
Which is least affected by chemical weathering?(1 point)
a chair made of plastic
a bridge made of iron rods
a pile of tiles made of feldspar
a statue made of marble
How do igneous rocks form?(1 point)
from the evaporation of water
from the cementing of sediments
from the modification of existing rock
from the cooling of magma
What is formed at a divergent plate boundary?(1 point)
sedimentary rock
metamorphic rock
mountains
oceanic crust
In one to two sentences, identify and describe the processes that must happen for sand to eventually become metamorphic rock.
Using one to two sentences, explain how the movement of tectonic plates helps turn sedimentary rocks into metamorphic rocks.
Igneous rocks form by the cooling of magma, not the evaporation of water (that would be a popsicle!). At a divergent plate boundary, new oceanic crust is formed, not sedimentary or metamorphic rock. Sand becomes metamorphic rock through the processes of heat and pressure acting on it over long periods of time. The movement of tectonic plates helps turn sedimentary rocks into metamorphic rocks by subjecting them to heat and pressure as they are buried deep within the Earth.
The processes that must happen for sand to eventually become metamorphic rock include compaction and cementation, which form sedimentary rock, followed by heat and pressure, which transform the sedimentary rock into metamorphic rock.
The movement of tectonic plates helps turn sedimentary rocks into metamorphic rocks through the process of plate collision. When two tectonic plates collide, the rocks get subjected to intense heat and pressure, causing them to undergo metamorphism and transform into metamorphic rocks.