Water freezes in a large crack of a rock.

occurs when water continually seeps into cracks, freezes and expands eventually breaking the rocks apart.

Rocks form bubbles after the heavy pour of acid rain.

Is the most active agent of erosion in deserts, open fields, and beaches

Insects secrete acidic substance on rocks.

Rocks fall down from the mountain and break.

Is a fan shaped deposit of gravel, sand and even smaller pieces of sediments, such as silt formed when stream flow suddenly slows down.

is a landform created by the deposition of sediments carried by a river as the stream flows to a lake or an ocean

is a process of breaking down of rocks by acidic water to produce clay and soluble salts.

Glaciers carve its pathways.

_ and _ produce acidic substance that slowly disinterested

Which of these statements are TRUE about mechanical weathering? I. breaks rock material into smaller pieces II. changes the chemical composition of rocks III. moss growing on the wall fence creates crack on the walls IV. beach rock gets hot in daytime and cools in the evening thus creating fracture on the rock

major agent of erosion

Which is an example of oxidation?

Strong winds blow small particles of the rocks.

_ happens when rocks surfaces are frequently exposed with water, wind and gravity.

Construction workers use power tools to break the rocks.

Which of the following best describes chemical weathering?

Balete tree grows at the wall of the building.

What happens to pieces of rock as they are transported by a river?

Which of the following activities has resulted in an increased rate of chemical weathering through acidification? I.The production of SO2 and NO in the atmosphere that combine with rain to form acids. II.The release of too much carbon dioxide in the air that turn rain into weak acid. III.The disintegration of rocks during construction and mining IV.The growth of the plant roots on the rock crack.

Is a flat area of land close to a river or stream.

Which of the following is NOT an example of physical weathering?

a naturally wall that blovks the water created by the deposit of large particles so the fertile soil of river or seabased may be used for agriculture

the breakfown of rock by acidic water to produce clay and soluble salts

In hydration, water is an active agent of chemical weathering. What happens when water loosely combines with the minerals of the rock?

What are the two things that affect the rate of weathering?

constantly erode and shape the shoreline It can carry large amounts of sands, rock particles and shells.

is caused by rainwater reacting with the mineral grains in rocks to form new minerals (clays) and soluble salts

In which of the following climates will chemical weathering be most rapid?

chemical addition of water

Rainwater combined with iron on rocks produces rusts

Where does hysical weatheribg occur?

Which of the following best describes weathering?

is the action of elements of weather and climate over earth material.

_ animals create holes on the ground and move rock fragments to the surface exposing them to environmental factors of weathering.

Water, ice, wind, gravity and changing temperature are agents of

In hydration, water is an active agent of chemical weathering. What happens when water loosely combines with the minerals of the rock?

_ happened when SO, and NO combined with rainwater and produce _ that reacts with rocks.

Which of the following activities has resulted in an increased rate of chemical weathering through acidification?

is a type of chemical weathering where water reacts chemically with the rocks, modifying its _

Carbonation occurs when _ dissolves to rainwater producing

caused by the effects of changing temperature on rocks, causing the rock to break apart. The process is sometimes assisted by water.

Which of the following conditions promotes slow chemical weathering?

It stretches from the banks of the river extending toward the outer edges of a valley

Which is NOT included in the group?

Carbon dioxide mix with water produces carbonic acid that reacts with rocks.

is a general name for processes by which soil, regolith, and rock move downslope under the force of gravity.

Which of these statements is NOT true about mechanical weathering?

is the process of breaking down of rocks.

Weak organic acids are produced by the action of the growing roots of lichens. These acids react with some minerals in rocks resulting in the decomposition of rocks. How will you classify this process?

Which type of rocks tends to weather more rapidly through hydrolysis process?

is a U-shaped body of water that forms when a river finds a different, shorter course.

What happens to pieces of rock as they are transported by a river?