Forces
Weathering
Erosion
Systems
Humans
100

This force pulls rocks, water, ice, and soil downhill.

What is gravity?

100

The process that breaks rock into smaller pieces without moving it.

What is weathering?

100

The movement of weathered material from one place to another.

What is erosion?

100

This Earth system includes rivers, glaciers and oceans.

What is the hydrosphere?

100

Humans speed up erosion through farming, mining and construction.

What is human-caused erosion?

200

These forces originate inside Earth and build mountains and plateaus. 

What are internal forces?

200

Weathering that changes the chemical makeup of rock minerals.

What is chemical weathering?

200

This agent of erosion is the main cause of continental erosion.

What are streams?

200

This system consists of rocks, soil, and landforms.

What is the geosphere?

200

This agricultural practice affects soil through the growth of many crops.

What is surplus farming?

300

This type of force reshapes Earth's Surface through water, wind, and ice. 

What are external forces?

300

This type of weathering breaks rock physically without changing composition.

What is mechanical weathering?

300

This terms describes the amount of water flowing through a stream. 

What is discharge?

300

This system includes plants, animals, and microorganisms.

What is the biosphere.

300

This human activity removes vegetation and increases slope instability.

What is deforestation?

400

This concept explains how Earth's crust rises when mass is removed by erosion.

What is isostatic rebound?

400

This chemical weathering process occurs when minerals react with oxygen.

What is oxidation?

400

This feature forms when rivers deposit sediment during flooding.

What is floodplain?

400

This system controls weather and climate patterns.

What is the atmosphere?

400

This environmental issue increases chemical weathering of rocks.

What is acid rain?

500

These two types of geologic processes describe slow changes versus sudden events.

What are gradual and catastrophic processes?

500

This factor increases the rate of both chemical and mechanical weathering. 

What is the presence of water?

500

This process explains how sand ripples migrate along deserts.

What is saltation?

500

This idea explains how changes in one Earth system affect others.

What is system interaction?

500

This terms describes humans acting as a major force shaping Earth's surface.

What is human as a geologic force?

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