Weathering, Erosion and Deposition

As shown in the diagram below, when WATER FREEZES in the CRACKS OF ROCKS, ice wedging can occur.

Frost (ice) wedging is best described as...

• a tectonic process that involves forces on Earth's crust to create mountains

• chemical weathering when sugar is dissolved in tea

• mechanical weathering of the rocks when FREEZING WATER EXPANDS and pushes the rock apart

Which of the following is an EXAMPLE of CHEMICAL WEATHERING?

• frost wedging

• ACID rain

• abrasion

What of the following best DESCRIBES the key term - EROSION?

• REMOVAL of rock particles by wind, water, ice or gravity

• a chemical reaction with oxygen in the air

• scraping or grinding of rocks to wear down the surface of the rock

This diagram is showing the LANDFORM CHANGES at Cape Cod, MA over a few decades.

What is the best description of these changes?

• The landscape of Cape Cod is shrinking because of mechanical weathering by human tourism.

• The landscape of Cape Cod is INCREASING because of CONSTANT DEPOSITION of SEDIMENTS.

• The landscape of Cape Cod did not change throughout the decades.

MECHANICAL WEATHERING can be CAUSED BY...

• FREEZE AND THAW CYCLE

• PLANT GROWTH and ACTIONS OF ANIMALS

• all of the above

Which of the following best described the GEOLOGICAL PROCESSES shown in the image?

• breaking down rocks by physical means or mechanical movement

• removing rock particles by wind or water from one place to another

• BREAK DOWN rocks by various chemical processes

These two factors AFFECT the RATE of WEATHERING ROCKS.

• type of rock and strength of the ocean waves

• type of rock and the amount of oxygen in surrounding air

• type of rock and the EXPOSURE TO CLIMATE

MECHANICAL weathering is SIMILIAR to CHEMICAL weathering because....

• both processes WEAR AWAY ROCK and RELATED to the ROCK CYCLE

• both processes involves oxygen in air and create igneous rocks in the rock cycle

• both occur very fast and increase temperatures to form metamorphic rocks in the rock cycle

To contrast MECHANICAL and CHEMICAL weathering, these two processes are DIFFERENT because..

• Mechanical changes the rock by removing it from the big rock and chemical does not change the rock.

• MECHANICALLY CHANGES the rock PHYSICALLY and

  CHEMICAL CHANGES the rock's SHAPE, SIZES AND COMPOSITION.

• Mechanical changes only occur in winter and chemical changes only in summer.

Look at the picture on the left,

Which statement correctly describe the bedrock in the soil horizon?

• The bedrock is at the lowest layer (R)

• The bedrock is the same as surface soil (A).

• The subsoil (B) is the level where bedrock is found