How do the mass and the density of the mantle compare with the mass and density of Earth’s core?(1 point)
Responses
The mantle’s mass is less than the core’s mass, but with greater density.
The mantle’s mass is less than the core’s mass, but with greater density.
The mantle’s mass is greater than the core’s mass, but with less density.
The mantle’s mass is greater than the core’s mass, but with less density.
The mantle’s mass and its density are less than that of the core.
The mantle’s mass and its density are less than that of the core.
The mantle’s mass and its density are greater than that of the core.
The correct response is: The mantle’s mass and its density are less than that of the core.
Which can be excluded from the list of events caused by the flow of thermal energy inside the Earth?(1 point)
Responses
volcanic eruptions
volcanic eruptions
earthquakes
earthquakes
valley formations
valley formations
thunderstorms
The correct response is: thunderstorms.
Select the best answer. Which statement is true about all convection currents?(1 point)
Responses
It results to formation of valleys and hills.
It results to formation of valleys and hills.
It is made possible by heat and pressure.
It is made possible by heat and pressure.
It happen in all layers of the Earth.
It happen in all layers of the Earth.
It causes earthquakes.
The correct response is: It is made possible by heat and pressure.
What is physical weathering? (1 point)
Responses
the building up of rock that has been brought from other places
the building up of rock that has been brought from other places
the movement of rock from one place to another
the movement of rock from one place to another
the transformation of rocks into some other type of materials
the transformation of rocks into some other type of materials
the breaking of rock into smaller pieces from nonchemical processes
the breaking of rock into smaller pieces from nonchemical processes
The correct response is: the breaking of rock into smaller pieces from nonchemical processes.
In one to two sentences, identify and describe the processes that must happen for sand to eventually become metamorphic rock.(2 points)
For sand to eventually become metamorphic rock, it must undergo the processes of compaction and cementation, where the sand grains are pressed together and bound by minerals, resulting in the formation of a solid, coherent rock.
How can plants cause weathering? (1 point)
Responses
Plants attract animals, and animals can burrow into rocks.
Plants attract animals, and animals can burrow into rocks.
Chemical reactions in plants change rocks and break them into smaller pieces.
Chemical reactions in plants change rocks and break them into smaller pieces.
Sprouting seeds and growing roots can cause rocks to break.
Sprouting seeds and growing roots can cause rocks to break.
Plants need water, and water can weather rocks.
The correct response is: Sprouting seeds and growing roots can cause rocks to break.
Which action can help slow down the process of chemical weathering?(1 point)
Responses
removing clay to avoid weakening rocks
removing clay to avoid weakening rocks
removing iron oxide to avoid breaking down rocks
removing iron oxide to avoid breaking down rocks
burning less fossil fuel
burning less fossil fuel
using less water in industrial areas
The correct response is: burning less fossil fuel.
Which is least affected by chemical weathering?(1 point)
Responses
a chair made of plastic
a chair made of plastic
a bridge made of iron rods
a bridge made of iron rods
a pile of tiles made of feldspar
a pile of tiles made of feldspar
a statue made of marble
The correct response is: a chair made of plastic.
How do igneous rocks form?(1 point)
Responses
from the modification of existing rock
from the modification of existing rock
from the cooling of magma
from the cooling of magma
from the evaporation of water
from the evaporation of water
from the cementing of sediments
The correct response is: from the cooling of magma.
What is formed at a divergent plate boundary?(1 point)
Responses
sedimentary rock
sedimentary rock
metamorphic rock
metamorphic rock
mountains
mountains
oceanic crust