WorksheetsGeosphere Review Quiz - 7th Grade Science
Total questions: 20
Worksheet time: 10mins
Which principle states that in undisturbed rock layers, the oldest layers are found at the bottom?
Law of Cross-Cutting
Law of Superposition
Law of Lateral Continuity
Principle of Original Horizontality
An index fossil is most useful for:
Determining exact rock age
Identifying specific rock types
Correlating rock layers across different regions
Measuring rock density
During which geological era did dinosaurs primarily exist?
Precambrian
Paleozoic
Mesozoic
Cenozoic
Seafloor spreading supports which major geological theory?
Continental Drift
Rock Cycle
Plate Tectonics
Weathering Process
At a transform plate boundary, plates typically:
Collide and create mountains
Move past each other horizontally
Separate and create new crust
Subduct underneath each other
Which factor most directly influences rock density?
Temperature
Mineral composition
Pressure
Color
Mechanical weathering differs from chemical weathering by:
Only changing rock's physical structure
Completely dissolving rock materials
Requiring water to occur
Creating new mineral compounds
An unconformity in geological layers represents:
Continuous rock formation
A gap in the geological record
Volcanic activity
Immediate rock deposition
Radiometric dating helps scientists determine:
Relative rock age
Absolute rock age
Rock composition
Rock density
At an oceanic-continental convergent boundary, what typically occurs?
Seafloor spreading
Mountain formation
Subduction of oceanic plate
Horizontal plate movement
The rock cycle demonstrates that rocks:
Remain permanently unchanged
Can transform between different types
Are always sedimentary
Cannot be recycled
Which layer of Earth has the highest density?
Crust
Mantle
Outer core
Inner core
Continental drift was first proposed by:
Isaac Newton
Charles Darwin
Alfred Wegener
Marie Curie
Fossils provide evidence for:
Current climate conditions
Future geological processes
Past life and environmental conditions
Rock mineral composition
Igneous rocks form through:
Metamorphism
Cooling and solidification of magma
Compaction of sediments
Chemical weathering
The Precambrian era is characterized by:
Dinosaur evolution
First complex life forms
Primitive single-celled organisms
Mammalian diversification
When sedimentary rocks form, they typically result from:
Volcanic eruptions
High-temperature metamorphism
Compaction and cementation of sediments
Rapid cooling of magma
Plate tectonics explains:
Weather patterns
Ocean currents
Earth's crustal movements
Plant evolution
Chemical weathering involves:
Physical breaking of rocks
Chemical transformation of rock minerals
Freezing and thawing
Wind erosion
The geologic time scale helps scientists:
Predict future earthquakes
Understand Earth's historical changes
Measure current rock temperatures
Calculate precise rock densities
