Question 1 of 10
TEKS 7A-7FEasy
A rock is best defined as:
Aa naturally occurring solid made of one or more minerals
Ba manufactured building material
Cthe preserved remains of an organism
Da single pure chemical element
Explanation
Most rocks are mixtures of one or more minerals.
Question 2 of 10
TEKS 8A-8FEasy
The fan-shaped or triangular deposit of sediment that forms where a river enters a quiet ocean or lake is a:
Aglacier
Bsand dune
Cdelta
Dcanyon
Explanation
As a river loses speed entering still water, it drops sediment, building a delta.
Question 3 of 10
TEKS 8A-8FEasy
Increasing the steepness (slope) of the land will generally cause the rate of erosion to:
Adecrease
Bincrease
Cstop completely
Dstay exactly the same
Explanation
Steeper slopes give running water and gravity more energy, increasing erosion.
Question 4 of 10
TEKS 7A-7FEasy
A rock that forms from the cooling and solidification of molten magma or lava is classified as:
Ametamorphic
Bigneous
Ca single mineral
Dsedimentary
Explanation
Igneous rock forms when molten material (magma/lava) cools and solidifies.
Question 5 of 10
TEKS 8A-8FEasy
The physical or chemical breakdown of rock into smaller pieces at Earth's surface is called:
Aweathering
Bdeposition
Csubduction
Dcondensation
Explanation
Weathering breaks rock down in place; it is distinct from erosion (the transport of the pieces).
Question 6 of 10
TEKS 8A-8FMedium
The process by which weathered rock and sediment are picked up and transported by water, wind, or ice is:
Acementation
Bweathering
Cerosion
Dcrystallization
Explanation
Erosion is the transport of sediment by an agent such as running water, wind, or glacial ice.
Question 7 of 10
TEKS 7A-7FEasy
Earth’s major layers, from the outside inward, are the:
Acore, mantle, and crust
Bcrust, mantle, and core
Cmantle, crust, and core
Dcrust, core, and mantle
Explanation
From surface to center: crust, then mantle, then core.
Question 8 of 10
TEKS 7A-7FEasy
The relative hardness of a mineral is measured using the:
ARichter scale
BpH scale
CMohs hardness scale
DCelsius scale
Explanation
The Mohs scale (1 = talc to 10 = diamond) ranks minerals by scratch resistance.
Question 9 of 10
TEKS 7A-7FEasy
A crack or break in rock along which movement has taken place is called a:
Acontour
Bmineral
Cdelta
Dfault
Explanation
A fault is a fracture in rock along which the two sides have moved relative to each other.
Question 10 of 10
TEKS 8A-8FEasy
A stream is able to erode and transport the largest, heaviest particles when its velocity is:
Adecreasing to a stop
Bhigh (fast-moving)
Clow (slow-moving)
Dzero (standing still)
Explanation
Faster-moving water has more energy, so it can erode and carry larger, heavier sediment.